Article: Intel's Long Awaited Return to the Memory Business

Article: Intel’s Long Awaited Return to the Memory Business
By: Antti-Ville Tuunainen (avtuunainen.delete@this.gmail.com), April 23, 2013 4:25 pm
Room: Moderated Discussions
Mark Roulo (nothanks.delete@this.xxx.com) on April 23, 2013 3:20 pm wrote:
> You have capacity limitations and memory bottlenecks at several places. So ...
>
> The Intel IGPU has a bandwidth advantage going to system DRAM because it shares the memory controller (and
> access to the system DRAM) with the CPU. The discrete part is bandwidth limited because of PCIe.
>
> I get how more memory (1 GB vs 128 MB) at fast speeds (64 GB/sec +) is good, but I'd also think that access
> to the rest of the system memory at faster speeds (25 GB/sec vs 5-10 GB/sec) would be good too.
>
> Any idea how these two factors compete? I don't game and have no idea ...

All present-day games have been designed and programmed with the latency and bandwidth of the PCIe link in mind. I personally believe that bringing the GPU closer to the CPU will be a major win that will help much more than just raw power, but that is only *after* games can rely that they are indeed close. Right now, the PCIe link is just a common design constraint, meaning that bringing the GPU and CPU closer together buys you *nothing* on present games.

PS4/the next XBOX should help with this, as they are APU designs that will teach game programmers how to exploit such architectures. For the shelf life of Haswell, I don't believe that a single game will exist that takes proper advantage of this.
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  Article: Intel's Long Awaited Return to the Memory BusinessUngo2013/04/23 11:33 AM
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        Article: Intel's Long Awaited Return to the Memory Businessdefault2013/04/24 08:29 AM
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      Article: Intel's Long Awaited Return to the Memory BusinessUngo2013/04/23 09:08 PM
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  Article: Intel's Long Awaited Return to the Memory BusinessFormula3502013/04/23 01:58 PM
    Article: Intel's Long Awaited Return to the Memory BusinessMark Roulo2013/04/23 02:20 PM
      Article: Intel's Long Awaited Return to the Memory BusinessAntti-Ville Tuunainen2013/04/23 04:25 PM
        Article: Intel's Long Awaited Return to the Memory BusinessJukka Larja2013/04/24 05:21 AM
        Article: Intel's Long Awaited Return to the Memory BusinessKevin G2013/04/25 06:48 AM
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  Haswell DRAM DIMM latencyAlbertH2013/07/10 04:37 PM
    Haswell DRAM DIMM latencyEduardoS2013/07/10 05:08 PM
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