ARM vs. x86 is irrelevant from an energy efficiency POV

Article: AMD's Mobile Strategy
By: Seni (seniike.delete@this.hotmail.com), December 21, 2011 5:53 pm
Room: Moderated Discussions
Wilco (Wilco.Dijkstra@ntlworld.com) on 12/21/11 wrote:
---------------------------
>>>>The x86 version combines not only the AGU op and Load, but also up to 1 ALU op,
>>>>and the loading and adding in of a full-length immediate.
>>>
>>>I actually think that store immediate is one of the more useful instructions that x86 has over ARM.
>>
>>Strange. It might be common but I doubt it has much impact, as its performance
>>would be barely different from the 2-instruction equivalent.
>
>That is true for all load/store + alu combination ops. It never gives you better performance.

It saves a little bit of fetch bandwidth. It was a pretty big deal on a 286. It's pretty much a wash if you have caches though, but there are still some minor effects having to do with decode and with register file ports and so on.

>You're looking at it from the wrong perspective. Yes, x86 can do this in a single instruction:
>
>ADD RAX, [RBX + RSI + imm32]
>
>But what advantage does this have? It's not equivalent to x += a[i][j] in C, so
>you still need extra instructions to do some useful work. Once you take those into
>account, you end up needing a similar number of instructions or cycles to do the same task.
>

x+= ptr[ix].member; //array of structures
or
x+= *ptr.member[ix]; //structure of arrays

It's not a perfect fit for 2D arrays, but it is a good fit for accessing an element of a structure in an array that is in the stack or on the heap, or was passed into a function by address.
You have a pointer to the base of the array in RBX which is not known until runtime. And you have an index that changes each iteration in RSI. And you have an offset into the structure (the imm). A structure's member offset probably doesn't need to be a 32-bit imm, but that's one of the options x86 gives us, and if you did use structure of arrays, the offsets could get pretty big.

But it's not just a matter of one specific use case. Any memory address is gonna be constructed as a sum of zero or more registers + zero or more immediates, and if there's more than one imm, they can be combined at compile-time. So the eight simplest possible memory addressing modes, in order of increasing complexity are:

[0] //this seems kinda silly, it's only here for completeness
[imm] //this seems awkward to me. It's very inflexible.
[register]
[register+imm] //this is very heavily used and is the standard on most RISCs.
[register+register]
[register+register+imm]
[register+register+register] //this requires a lot of register file ports.
[register+register+register+imm]

There are diminishing returns. Most RISCs draw the line after [reg+imm].
x86 draws it at right after [reg+reg+imm], so x86 is catching a little more of the tail of the distribution.

>Multi-op in the sense that it is a set of loads and stores combined into a single
>instruction. Just like ldrd is a combination of 2 loads to consecutive addresses.

An SSE MOV loads from four consecutive addresses of floats at a time but it's still one load.
From the cache's point of view, the TLB's point of view, etc. consecutive addresses = one op.
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TopicPosted ByDate
AMD's Mobile StrategyMark Pillsbury2011/12/14 05:58 PM
  ARM vs. x86 is irrelevant from an energy efficiency POV Daniel Bizo2011/12/15 04:30 AM
    ARM vs. x86 is irrelevant from an energy efficiency POV Foo_2011/12/15 05:08 AM
    ARM vs. x86 is irrelevant from an energy efficiency POV an2011/12/15 05:25 AM
      ARM vs. x86 is irrelevant from an energy efficiency POV Azazel2011/12/15 08:50 PM
        ARM vs. x86 is irrelevant from an energy efficiency POV Mike C2011/12/22 01:14 PM
          ARM vs. x86 is irrelevant from an energy efficiency POV Michael S2011/12/23 06:06 AM
        ARM vs. x86 is irrelevant from an energy efficiency POV Mike C2011/12/23 07:07 PM
    ARM vs. x86 is irrelevant from an energy efficiency POV Wilco2011/12/15 06:46 AM
      ARM vs. x86 is irrelevant from an energy efficiency POV Linus Torvalds2011/12/15 09:32 AM
        ARM vs. x86 is irrelevant from an energy efficiency POV a person2011/12/15 09:59 AM
        ARM vs. x86 is irrelevant from an energy efficiency POV Michael S2011/12/15 10:18 AM
          ARM vs. x86 is irrelevant from an energy efficiency POV anon2011/12/16 06:22 PM
            ARM vs. x86 is irrelevant from an energy efficiency POV Wilco2011/12/17 05:56 AM
              Thumb vs ARM instruction countsnone2011/12/17 10:15 AM
                Thumb vs ARM instruction countsWilco2011/12/22 06:50 AM
                  Thumb vs ARM instruction countsExophase2011/12/22 07:56 AM
        ARM vs. x86 is irrelevant from an energy efficiency POV Exophase2011/12/15 10:44 AM
          ARM vs. x86 is irrelevant from an energy efficiency POV Linus Torvalds2011/12/15 02:24 PM
            ARM vs. x86 is irrelevant from an energy efficiency POV Exophase2011/12/15 03:15 PM
              ARM vs. x86 is irrelevant from an energy efficiency POV Linus Torvalds2011/12/15 03:51 PM
                ARM vs. x86 is irrelevant from an energy efficiency POV anon2011/12/15 04:32 PM
                  ARM vs. x86 is irrelevant from an energy efficiency POV David Kanter2011/12/15 05:57 PM
                    ARM vs. x86 is irrelevant from an energy efficiency POV anon2011/12/15 07:58 PM
                      ARM vs. x86 is irrelevant from an energy efficiency POV Wilco2011/12/15 11:27 PM
                    Is scalar x86 decode that easy?Paul A. Clayton2011/12/15 08:20 PM
                      Is scalar x86 decode that easy?Linus Torvalds2011/12/16 11:09 AM
                        Is scalar x86 decode that easy?EduardoS2011/12/17 09:03 AM
                        Is scalar x86 decode that easy?Ricardo B2011/12/17 01:21 PM
                          Is scalar x86 decode that easy?Megol2011/12/18 04:23 AM
                            Is scalar x86 decode that easy?rwessel2011/12/18 09:04 AM
                              Is scalar x86 decode that easy?Megol2011/12/18 09:38 AM
                              Is scalar x86 decode that easy?Linus Torvalds2011/12/18 11:15 AM
                                Is scalar x86 decode that easy?Ricardo B2011/12/18 12:57 PM
                                  Is scalar x86 decode that easy?Linus Torvalds2011/12/18 01:49 PM
                    ARM vs. x86 is irrelevant from an energy efficiency POV Wilco2011/12/15 11:00 PM
                    ARM vs. x86 is irrelevant from an energy efficiency POV anon2011/12/17 11:13 AM
                      Conditional comparesMichael S2011/12/17 12:05 PM
                        Conditional comparesEduardoS2011/12/17 12:32 PM
                ARM vs. x86 is irrelevant from an energy efficiency POV Exophase2011/12/15 04:56 PM
                  ARM free to innovate?Paul A. Clayton2011/12/15 08:14 PM
                  ARM vs. x86 is irrelevant from an energy efficiency POV Linus Torvalds2011/12/16 09:01 AM
                    ARM vs. x86 is irrelevant from an energy efficiency POV Exophase2011/12/16 01:33 PM
                      ARM vs. x86 is irrelevant from an energy efficiency POV Linus Torvalds2011/12/16 05:30 PM
                        ARM vs. x86 is irrelevant from an energy efficiency POV rwessel2011/12/16 11:51 PM
                          ARM vs. x86 is irrelevant from an energy efficiency POV Octoploid2011/12/17 06:46 AM
                          ARM vs. x86 is irrelevant from an energy efficiency POV Linus Torvalds2011/12/17 09:56 AM
                        ARM vs. x86 is irrelevant from an energy efficiency POV Wilco2011/12/17 06:45 AM
                          ARM vs. x86 is irrelevant from an energy efficiency POV Linus Torvalds2011/12/17 10:31 AM
                            ARM vs. x86 is irrelevant from an energy efficiency POV anon2011/12/21 08:12 AM
                          ARM vs. x86 is irrelevant from an energy efficiency POV David Kanter2011/12/17 01:16 PM
                            ARM vs. x86 is irrelevant from an energy efficiency POV Linus Torvalds2011/12/17 02:30 PM
                            ARM vs. x86 is irrelevant from an energy efficiency POV none2011/12/17 04:00 PM
                              ARM vs. x86 is irrelevant from an energy efficiency POV Wilco2011/12/17 04:29 PM
                            ARM vs. x86 is irrelevant from an energy efficiency POV Wilco2011/12/17 04:45 PM
                        ARM vs. x86 is irrelevant from an energy efficiency POV Exophase2011/12/20 09:24 AM
                          ARM vs. x86 is irrelevant from an energy efficiency POV Linus Torvalds2011/12/20 12:07 PM
                            ARM vs. x86 is irrelevant from an energy efficiency POV Exophase2011/12/20 06:19 PM
                              ARM vs. x86 is irrelevant from an energy efficiency POV EduardoS2011/12/20 06:40 PM
                                ARM vs. x86 is irrelevant from an energy efficiency POV Exophase2011/12/20 07:02 PM
                                  ARM vs. x86 is irrelevant from an energy efficiency POV Linus Torvalds2011/12/20 07:49 PM
                                    ARM vs. x86 is irrelevant from an energy efficiency POV Exophase2011/12/20 07:59 PM
                                      ARM vs. x86 is irrelevant from an energy efficiency POV Michael S2011/12/21 02:49 AM
                                        ARM vs. x86 is irrelevant from an energy efficiency POV Exophase2011/12/21 09:10 AM
                                      ARM vs. x86 is irrelevant from an energy efficiency POV gallier22011/12/21 05:41 AM
                                        ARM vs. x86 is irrelevant from an energy efficiency POV Wilco2011/12/21 06:43 AM
                                          ARM vs. x86 is irrelevant from an energy efficiency POV Seni2011/12/21 08:28 AM
                                            ARM vs. x86 is irrelevant from an energy efficiency POV Wilco2011/12/21 10:59 AM
                                              Cortex A9 latenciesS. Rao2011/12/21 08:12 PM
                                                Cortex A9 latenciesWilco2011/12/22 03:59 AM
                                            ARM vs. x86 is irrelevant from an energy efficiency POV gallier22011/12/22 12:25 AM
                                        ARM vs. x86 is irrelevant from an energy efficiency POV Exophase2011/12/21 08:42 AM
                                          ARM vs. x86 is irrelevant from an energy efficiency POV gallier22011/12/22 01:02 AM
                                            ARM vs. x86 is irrelevant from an energy efficiency POV Wilco2011/12/22 04:44 AM
                                              ARM vs. x86 is irrelevant from an energy efficiency POV gallier22011/12/22 06:57 AM
                                    (in)visibility of ISA featureshobold2011/12/21 05:27 AM
                              ARM vs. x86 is irrelevant from an energy efficiency POV Linus Torvalds2011/12/20 06:51 PM
                                ARM vs. x86 is irrelevant from an energy efficiency POV Exophase2011/12/20 07:13 PM
                                  ARM vs. x86 is irrelevant from an energy efficiency POV EduardoS2011/12/20 07:41 PM
                                    second to that (NT)Michael S2011/12/21 01:37 AM
                                  ARM vs. x86 is irrelevant from an energy efficiency POV Linus Torvalds2011/12/20 08:03 PM
                                    ARM vs. x86 is irrelevant from an energy efficiency POV Exophase2011/12/20 10:05 PM
                                      ARM vs. x86 is irrelevant from an energy efficiency POV Seni2011/12/21 01:22 AM
                                        ARM vs. x86 is irrelevant from an energy efficiency POV Exophase2011/12/21 08:28 AM
                                          ARM vs. x86 is irrelevant from an energy efficiency POV Seni2011/12/21 09:06 AM
                                            ARM vs. x86 is irrelevant from an energy efficiency POV Exophase2011/12/21 09:33 AM
                                              ARM vs. x86 is irrelevant from an energy efficiency POV Seni2011/12/21 10:03 AM
                                                ARM vs. x86 is irrelevant from an energy efficiency POV Exophase2011/12/21 10:33 AM
                                                  Adding modes for flexible imm. sizesPaul A. Clayton2011/12/21 03:08 PM
                                                  ARM vs. x86 is irrelevant from an energy efficiency POV anonymous2011/12/21 09:57 PM
                                                    ARM vs. x86 is irrelevant from an energy efficiency POV Exophase2011/12/21 10:12 PM
                                                      ARM vs. x86 is irrelevant from an energy efficiency POV anonymous2011/12/22 01:27 AM
                                                        ARM vs. x86 is irrelevant from an energy efficiency POV Exophase2011/12/22 07:27 AM
                                                ARM vs. x86 is irrelevant from an energy efficiency POV Brett2011/12/21 10:36 PM
                                            ARM vs. x86 is irrelevant from an energy efficiency POV Wilco2011/12/21 04:34 PM
                                              ARM vs. x86 is irrelevant from an energy efficiency POV Seni2011/12/21 05:53 PM
                                                ARM vs. x86 is irrelevant from an energy efficiency POV Wilco2011/12/22 05:42 AM
                                                  ARM vs. x86 is irrelevant from an energy efficiency POV David Kanter2011/12/22 04:29 PM
                                                    ARM vs. x86 is irrelevant from an energy efficiency POV Exophase2011/12/22 06:17 PM
                                                      ARM vs. x86 is irrelevant from an energy efficiency POV David Kanter2011/12/22 07:23 PM
                                                        ARM vs. x86 is irrelevant from an energy efficiency POV Exophase2011/12/22 08:27 PM
                                                          Confused by AVX....David Kanter2011/12/22 11:05 PM
                                                            Celeron, PentiumMichael S2011/12/23 12:15 AM
                                                            Confused by AVX....S. Rao2011/12/23 12:27 AM
                                                            Confused by AVX....Gabriele Svelto2011/12/23 12:33 AM
                                                              Confused by AVX....David Kanter2011/12/23 11:58 AM
                                                                Confused by AVX....Gabriele Svelto2011/12/23 01:44 PM
                                      Load Single Register (pc-relative, literal load)Michael S2011/12/21 01:55 AM
                                        Load Single Register (pc-relative, literal load)Wilco2011/12/21 07:35 AM
                                          Load Single Register (pc-relative, literal load)Brett2011/12/21 11:20 PM
                                            Load Single Register (pc-relative, literal load)Exophase2011/12/22 07:32 AM
                                              Load Single Register (pc-relative, literal load)iz2011/12/22 04:45 PM
                                        Load Single Register (pc-relative, literal load)Exophase2011/12/21 08:34 AM
                                          Load Single Register (pc-relative, literal load)Wilco2011/12/21 03:29 PM
                                            Load Single Register (pc-relative, literal load)Exophase2011/12/22 07:37 AM
                                              Load Single Register (pc-relative, literal load)Brett2011/12/22 10:59 PM
                                          Load Single Register (pc-relative, literal load)Konrad Schwarz2011/12/27 04:07 AM
                                        Load Single Register (pc-relative, literal load)stubar2011/12/21 02:00 PM
                                          Load Single Register (pc-relative, literal load)Exophase2011/12/21 02:25 PM
                                            Load Single Register (pc-relative, literal load)Wilco2011/12/21 03:30 PM
                                              Load Single Register (pc-relative, literal load)anon2011/12/21 08:20 PM
                                                Load Single Register (pc-relative, literal load)Wilco2011/12/22 04:50 AM
                                                  Load Single Register (pc-relative, literal load)anon2011/12/22 05:11 AM
                                                    Load Single Register (pc-relative, literal load)Wilco2011/12/22 06:25 AM
                                      ARM vs. x86 is irrelevant from an energy efficiency POV Linus Torvalds2011/12/21 07:18 PM
                                        ARM vs. x86 is irrelevant from an energy efficiency POV Wilco2011/12/22 05:07 AM
                                          ARM vs. x86 is irrelevant from an energy efficiency POV Linus Torvalds2011/12/22 09:56 AM
                                            idle philosophizing about localityhobold2011/12/23 07:26 AM
                                              Streaming needs regularity, not locality (NT)Rohit2011/12/23 12:32 PM
                                                Streaming needs regularity, not localityiz2011/12/23 11:38 PM
                                                Streaming needs regularity, not localityhobold2011/12/24 03:49 AM
                                                  Streaming needs regularity, not localityRohit2011/12/24 07:52 AM
                                                  Streaming needs regularity, not localityEBFE2011/12/25 05:30 PM
                                                    Streaming needs regularity, not localityRohit2011/12/25 08:42 PM
                                                      Streaming needs regularity, not localityEBFE2011/12/25 10:49 PM
                                                        Streaming needs regularity, not localityRohit2011/12/26 08:53 AM
                                    ARM vs. x86 is irrelevant from an energy efficiency POV mpx2011/12/21 01:57 AM
                                      ARM vs. x86 is irrelevant from an energy efficiency POV John Yates2011/12/26 09:46 AM
                                        Apollo Computer's DN10KBrett2011/12/26 05:56 PM
                                          Apollo Computer's DN10Kpeter huisken2011/12/27 06:40 AM
                                    ARM vs. x86 is irrelevant from an energy efficiency POV gallier22011/12/21 05:56 AM
                              ALU with shift; post-adjust, memcpyMichael S2011/12/21 02:22 AM
                                ALU with shift; post-adjust, memcpyExophase2011/12/21 08:02 AM
                                  memcpyMichael S2011/12/21 09:36 AM
                                    memcpyExophase2011/12/21 10:15 AM
                                    memcpyWilco2011/12/21 05:06 PM
                                      memcpyanon2011/12/21 08:15 PM
                                      memcpyMichael S2011/12/21 11:12 PM
                                        memcpyWilco2011/12/22 05:20 AM
                          Other x86 uop tricksDavid Kanter2011/12/20 06:21 PM
                            Other x86 uop tricksanon2011/12/20 06:35 PM
                              Other x86 uop tricksMichael S2011/12/21 02:55 AM
                            Other x86 uop tricksanon2011/12/20 06:53 PM
                            Other x86 uop tricksExophase2011/12/20 06:54 PM
                      stwxMichael S2011/12/17 09:46 AM
                        stwxWilco2011/12/17 10:33 AM
                          stwxMichael S2011/12/17 12:12 PM
            ARM vs. x86 is irrelevant from an energy efficiency POV mpx2011/12/16 10:06 AM
              ARM vs. x86 is irrelevant from an energy efficiency POV Linus Torvalds2011/12/16 10:17 AM
                Reason for shared decoderPaul A. Clayton2011/12/16 10:45 AM
                  Reason for shared decoderanon2011/12/16 05:37 PM
                    Reason for shared decodermpx2011/12/17 05:20 AM
                      Reason for shared decoderanon2011/12/17 03:19 PM
                        Reason for shared decodermpx2011/12/18 06:21 AM
                          Reason for shared decoderanon2011/12/18 07:30 AM
                          Reason for shared decoderKira2011/12/18 08:00 PM
                ARM vs. x86 is irrelevant from an energy efficiency POV mpx2011/12/17 04:40 AM
                  ARM vs. x86 is irrelevant from an energy efficiency POV Linus Torvalds2011/12/17 11:06 AM
                    ARM vs. x86 is irrelevant from an energy efficiency POV mpx2011/12/17 02:17 PM
        ARM vs. x86 is irrelevant from an energy efficiency POV Wilco2011/12/15 11:10 PM
          ARM vs. x86 is irrelevant from an energy efficiency POV David Kanter2011/12/16 03:19 AM
          ARM vs. x86 is irrelevant from an energy efficiency POV Linus Torvalds2011/12/16 09:14 AM
          ARM vs. x86 is irrelevant from an energy efficiency POV Eugene Nalimov2011/12/16 10:07 AM
            ARM vs. x86 is irrelevant from an energy efficiency POV Michael S2011/12/18 06:25 AM
              ARM vs. x86 is irrelevant from an energy efficiency POV Linus Torvalds2011/12/18 11:48 AM
                ARM vs. x86 is irrelevant from an energy efficiency POV Michael S2011/12/18 03:01 PM
                  ARM vs. x86 is irrelevant from an energy efficiency POV Linus Torvalds2011/12/18 04:21 PM
                    ARM vs. x86 is irrelevant from an energy efficiency POV Linus Torvalds2011/12/18 06:56 PM
      x86 compatibility is not as important as Microsoft compatibilityBrett2011/12/15 07:13 PM
      You're completley missing the pictureDaniel Bizo2011/12/16 07:12 AM
        Missed referencesDaniel Bizo2011/12/16 07:16 AM
          Missed referencesnone2011/12/16 08:17 AM
            Missed referencesDaniel Bizo2011/12/16 08:29 AM
    ARM vs. x86 is irrelevant from an energy efficiency POV Gabriele Svelto2011/12/15 11:55 AM
    ARM vs. x86 is irrelevant from an energy efficiency POV someone2011/12/15 12:19 PM
  AMD's Mobile StrategyDavid Kanter2011/12/15 05:13 PM
    AMD's Mobile StrategyMark Pillsbury2011/12/15 07:14 PM
      AMD's Mobile Strategybakaneko2011/12/15 07:57 PM
      AMD's Mobile StrategyDavid Kanter2011/12/15 09:53 PM
    AMD's new GPU ISA less efficient?Paul A. Clayton2011/12/15 07:33 PM
      AMD's new GPU ISA less efficient?bakaneko2011/12/15 08:03 PM
      AMD's new GPU ISA less efficient?Rohit2011/12/15 08:09 PM
  AMD's Mobile StrategyIan Ollmann2011/12/16 08:21 AM
    AMD's Mobile StrategyMegol2011/12/16 08:33 AM
    AMD's Mobile StrategyDan Fay2011/12/16 06:02 PM
      AMD's Mobile StrategyMichael S2011/12/17 08:22 AM
        AMD's Mobile StrategyMegol2011/12/17 09:10 AM
          AMD's Mobile StrategyWilco2011/12/17 10:18 AM
        AMD's Mobile StrategyDan Fay2011/12/17 10:45 AM
    AMD's Mobile StrategyEduardoS2011/12/17 06:43 AM
      AMD's Mobile StrategyMichael S2011/12/17 10:55 AM
  AMD's Mobile StrategyBill Henkel2011/12/16 05:54 PM
    6 GHz 2-core water-cooled processorTom P2011/12/19 06:48 PM
      6 GHz 2-core water-cooled processorBill Henkel2011/12/19 07:21 PM
        6 GHz 2-core water-cooled processorgallier22011/12/20 12:31 AM
          "Benefit" of smaller market sharePaul A. Clayton2011/12/20 08:45 AM
            scalability of flash SSDSeni2011/12/20 10:22 AM
              USB drive price-point practical?Paul A. Clayton2011/12/20 11:49 AM
                USB drive price-point practical?Seni2011/12/20 01:02 PM
                  A minor comment on utilityPaul A. Clayton2011/12/20 02:19 PM
                    A minor comment on utilitySeni2011/12/20 02:35 PM
                    A minor comment on utilityFoo_2011/12/21 06:06 AM
                      100" Big screen.pH72011/12/26 11:37 AM
                USB drive price-point practical?David Hess2011/12/20 04:25 PM
                  USB drive price-point practical?iz2011/12/20 05:08 PM
                    USB drive price-point practical?David Hess2011/12/21 06:54 AM
                      USB drive price-point practical?iz2011/12/21 10:21 PM
                  USB drive price-point practical?Ungo2011/12/20 05:36 PM
                    USB drive price-point practical?David Hess2011/12/21 06:48 AM
              scalability of flash SSDEduardoS2011/12/20 02:50 PM
                scalability of flash SSDSeni2011/12/20 05:41 PM
                  scalability of flash SSDEduardoS2011/12/20 05:50 PM
                    scalability of flash SSDSeni2011/12/20 06:24 PM
                      scalability of flash SSDEduardoS2011/12/20 06:51 PM
                        scalability of flash SSDanon2011/12/21 03:03 AM
                          scalability of flash SSDanon2011/12/21 04:21 AM
                            scalability of flash SSDEduardoS2011/12/21 12:32 PM
                              scalability of flash SSDanon2011/12/21 02:49 PM
                                scalability of flash SSDEduardoS2011/12/21 03:58 PM
                                  scalability of flash SSDanon2011/12/21 08:00 PM
                                    scalability of flash SSDEduardoS2011/12/22 01:58 AM
                                    scalability of flash SSDRicardo B2011/12/22 07:36 AM
              scalability of flash SSDWes Felter2011/12/20 04:53 PM
                scalability of flash SSDSeni2011/12/20 05:24 PM
                scalability of flash SSDiz2011/12/20 05:29 PM
        6 GHz 2-core water-cooled processorExophase2011/12/20 08:05 AM
          6 GHz 2-core water-cooled processorEduardoS2011/12/20 02:58 PM
            6 GHz 2-core water-cooled processorExophase2011/12/20 05:13 PM
              6 GHz 2-core water-cooled processorEduardoS2011/12/20 05:43 PM
                6 GHz 2-core water-cooled processorExophase2011/12/21 10:36 AM
                  6 GHz 2-core water-cooled processorSeni2011/12/21 11:11 AM
                    6 GHz 2-core water-cooled processorExophase2011/12/21 11:26 AM
                  Diatomic Helium? (NT)Paul A. Clayton2011/12/21 02:50 PM
                    Sorry, should have read further in thread! (NT)Paul A. Clayton2011/12/21 02:52 PM
      6 GHz 2-core water-cooled processorsomeone2011/12/20 09:09 AM
        Per-core licensing fees.mpx2011/12/21 02:07 AM
    AMD's Mobile StrategyDoug Siebert2011/12/20 05:39 PM
  AMD's Mobile Strategy (NT)yundy2011/12/16 08:19 PM
  ARM transition is irrelevant from an economic POV Azazel2011/12/17 11:23 PM
  AMD's Mobile Strategypk2011/12/21 06:51 AM
    AMD's Mobile StrategyDavid Kanter2011/12/21 09:55 AM
      Samsung's fab technologyMark Roulo2011/12/21 10:34 AM
      AMD's Mobile StrategyAzazel2011/12/21 08:45 PM
        AMD's Mobile StrategyEduardoS2011/12/22 01:59 AM
          AMD's Mobile StrategyAzazel2011/12/22 09:03 PM
            AMD's Mobile StrategyEduardoS2011/12/22 10:51 PM
            AMD's Mobile StrategyVincent Diepeveen2011/12/24 10:15 AM
  AMD's Mobile StrategyAndrew Maizels2011/12/21 10:30 AM
  AMD's Mobile StrategyMr. Camel2011/12/27 08:50 AM
    AMD's Mobile StrategyMike C2011/12/27 10:01 PM
  Need for DifferentiationBill Henkel2011/12/29 11:22 AM
    Need for DifferentiationBrett2011/12/29 08:53 PM
      Need for DifferentiationVincent Diepeveen2011/12/30 10:29 AM
      Requested software features already in productCharles2011/12/30 08:35 PM
        Requested software features already in productSanjay B2012/01/11 03:45 PM
          Requested software features already in productBrett2012/01/11 09:18 PM
    Need for DifferentiationDavid Kanter2011/12/30 12:23 AM
      Need for DifferentiationVincent Diepeveen2011/12/30 10:17 AM
      Need for DifferentiationBill Henkel2012/01/03 06:01 PM
        Need for DifferentiationDavid Kanter2012/01/03 07:34 PM
    Need for DifferentiationVincent Diepeveen2011/12/30 10:09 AM
    L4 CacheBill Henkel2011/12/30 04:55 PM
      L4 CacheDavid Kanter2011/12/30 08:34 PM
        L4 CacheEduardoS2011/12/31 02:42 PM
          L4 CacheExophase2011/12/31 04:37 PM
      Need for speedDoug Siebert2011/12/31 12:07 PM
        Need for speedAlex M2012/01/06 02:38 PM
          Need for speedDoug Siebert2012/01/06 06:51 PM
        Need for speedTom J2012/01/10 03:44 PM
          Need for speedrwessel2012/01/10 04:30 PM
      L4 CacheRicardo B2011/12/31 01:25 PM
        L4 CacheBill Henkel2012/01/03 05:33 PM
          L4 CacheDavid Kanter2012/01/03 07:54 PM
            L4 Cache--not quite that bad?Paul A. Clayton2012/01/04 12:10 PM
              L4 Cache--not quite that bad?David Kanter2012/01/04 03:59 PM
                L4 Cache--not so bad (for Intel/IBM perhaps)Paul A. Clayton2012/01/04 07:01 PM
                L4 CacheBill Henkel2012/01/05 04:50 PM
                  Integration class price/performance tradeoffs?Paul A. Clayton2012/01/06 02:26 PM
                    Integration class price/performance tradeoffs?David Kanter2012/01/06 05:29 PM
                      InterposersMark Roulo2012/01/09 08:43 AM
                        InterposersDavid Kanter2012/01/10 11:13 AM
                    Integration class price/performance tradeoffs?Bill Henkel2012/01/06 05:52 PM
                      Beware of invention-stealing time travelers :-)Paul A. Clayton2012/01/06 07:31 PM
                        AMD PrototypePoindexter2012/01/07 05:20 AM
                    L4 Cache with Silicon InterposerTom J2012/01/08 04:50 PM
              L4 Cache--not quite that bad?rwessel2012/01/04 06:20 PM
                Temptation for expensive optimizationsPaul A. Clayton2012/01/04 07:20 PM
            L4 CacheDan Fay2012/01/04 04:51 PM
              L4 CacheRicardo B2012/01/04 05:39 PM
                L4 CacheDan Fay2012/01/04 05:57 PM
              L4 CacheKevin G2012/01/06 08:02 AM
          L4 CacheRicardo B2012/01/04 05:29 PM
            L4 CacheMichael S2012/01/05 06:21 AM
              L4 CacheRicardo B2012/01/05 10:01 AM
              L4 CacheRicardo B2012/01/06 05:06 AM
                L4 CacheMichael S2012/01/06 06:35 AM
                  Non-latency advantagesPaul A. Clayton2012/01/06 02:04 PM
                    Non-latency advantagesRicardo B2012/01/06 05:12 PM
                      Tag check delay??Paul A. Clayton2012/01/06 06:05 PM
                        Tag check delay??Ricardo B2012/01/06 07:18 PM
                          Thanks for sharingPaul A. Clayton2012/01/06 07:46 PM
            L4 Cachesomeone2012/01/08 04:06 PM
              L4 CacheRicardo B2012/01/08 05:28 PM
      L4 CacheVincent Diepeveen2012/01/08 01:11 PM
        L4 CacheJouni Osmala2012/01/09 02:24 AM
  Value of x86 in ServersGeorge Baker2012/01/04 09:55 AM
    Value of x86 in ServersDavid Kanter2012/01/05 01:40 AM
      Value of x86 in Serversrwessel2012/01/05 02:27 AM
        Value of x86 in ServersDavid Kanter2012/01/05 03:49 AM
      Value of x86 in ServersKira2012/01/09 04:22 PM
        Value of x86 in ServersJoel2012/01/09 08:20 PM
    Value of x86 in ServersDan Fay2012/01/05 08:03 AM
    Value of x86 in ServersAlex M2012/01/06 03:23 PM
    Value of x86 in ServersTom J2012/01/10 03:25 PM
      Value of x86 in Serversanon2012/01/11 11:44 AM
        Value of x86 in ServersGregory2012/01/12 05:11 PM
          x86 complexity or high-performance complexity?Paul A. Clayton2012/01/12 05:52 PM
          Value of x86 in ServersMichael S2012/01/13 05:39 AM
            Value of x86 in ServersRicardo B2012/01/13 02:14 PM
              Value of x86 in ServersMichael S2012/01/14 11:22 AM
  Heterogeneous ComputingAlex M2012/01/06 04:10 AM
    Thoughput != SIMDPaul A. Clayton2012/01/06 04:10 PM
  AMD's Processor StrategyJason Chan2012/01/10 05:06 AM
    AMD's Processor StrategyMark Roulo2012/01/10 05:21 PM
      AMD's Processor StrategyMegol2012/01/11 02:51 AM
        AMD's Processor StrategyDavid Hess2012/01/11 09:46 AM
    AMD's Processor StrategyAzazel2012/01/12 08:46 PM
      AMD's Processor StrategyVincent Diepeveen2012/01/13 05:28 AM
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