Article: Medfield, Intel's x86 Phone Chip
By: IntelUser2000 (Intel_user2000.delete@this.yahoo.ca), January 24, 2012 7:30 pm
Room: Moderated Discussions
David Kanter (dkanter@realworldtech.com) on 1/24/12 wrote:
---------------------------
>So what is your estimate for the performance of Medfield on SPECint2000 relative to say, OMAP5, Tegra3 or S4?
>
I agree with Wilco on this one. There's no way a single core 1.6GHz Medfield will surpass similarly clocked dual core A15 in ANY benchmark.
If we assume the Sunspider benchmark represents real world case, Medfield is anywhere from equal to 10% slower per clock compared to A9. Good thing Medfield is clocked 30-60%(depending on Burst) higher.
That's on a single thread benchmark. However, the competition is dual core. Hyperthreading on Atoms do a lot, but dual cores do way more. I've seen benchmarks of 2 core Atom with Hyperthreading disabled vs Hyperthreading enabled single core Atom. The 2 core is 30 or so percent faster.
Then maybe, thanks to Hyperthreading, 1.6GHz Medfield can be on par with 1.2GHz A9 parts. Now you see why suggesting equivalence to higher clocked A15 parts are ridiculous. Assuming only 20% IPC gain, and 1.5GHz clock speed, the A15 part will have 25-30% advantage in single thread and about 50-60% in multi-threads. Now most people are expecting IPC gains of 40%+.
---------------------------
>So what is your estimate for the performance of Medfield on SPECint2000 relative to say, OMAP5, Tegra3 or S4?
>
I agree with Wilco on this one. There's no way a single core 1.6GHz Medfield will surpass similarly clocked dual core A15 in ANY benchmark.
If we assume the Sunspider benchmark represents real world case, Medfield is anywhere from equal to 10% slower per clock compared to A9. Good thing Medfield is clocked 30-60%(depending on Burst) higher.
That's on a single thread benchmark. However, the competition is dual core. Hyperthreading on Atoms do a lot, but dual cores do way more. I've seen benchmarks of 2 core Atom with Hyperthreading disabled vs Hyperthreading enabled single core Atom. The 2 core is 30 or so percent faster.
Then maybe, thanks to Hyperthreading, 1.6GHz Medfield can be on par with 1.2GHz A9 parts. Now you see why suggesting equivalence to higher clocked A15 parts are ridiculous. Assuming only 20% IPC gain, and 1.5GHz clock speed, the A15 part will have 25-30% advantage in single thread and about 50-60% in multi-threads. Now most people are expecting IPC gains of 40%+.
Topic | Posted By | Date |
---|---|---|
Medfield article online | David Kanter | 2012/01/23 01:51 PM |
server error | bakaneko | 2012/01/24 03:00 AM |
Fixed | David Kanter | 2012/01/24 04:02 AM |
Fixed | Joel | 2012/01/24 07:43 AM |
Fixed | Ricardo B | 2012/01/24 11:25 AM |
Fixed | David Kanter | 2012/01/24 05:29 PM |
Fixed | Gabriele Svelto | 2012/01/24 01:07 PM |
Fixed | David Kanter | 2012/01/24 05:30 PM |
Reference platform battery life | Doug Siebert | 2012/01/24 02:03 PM |
standby time | Foo_ | 2012/01/25 06:58 AM |
standby time | Anon | 2012/01/26 03:42 AM |
standby time | Foo_ | 2012/01/26 04:02 AM |
standby time | Doug Siebert | 2012/01/26 12:39 PM |
standby time | Anon | 2012/01/26 01:22 PM |
standby time | anon | 2012/01/26 02:08 PM |
standby time | Anon | 2012/01/26 06:03 PM |
standby time | anon | 2012/01/26 08:57 PM |
standby time | anon | 2012/01/26 09:01 PM |
standby time | Anon | 2012/01/27 09:32 PM |
standby time | Doug Siebert | 2012/01/27 02:15 PM |
standby time | anon | 2012/01/27 02:41 PM |
Reference platform battery life | David Kanter | 2012/01/27 10:09 AM |
Performance analysis laughable | Wilco | 2012/01/24 03:23 PM |
Performance analysis laughable | David Kanter | 2012/01/24 05:19 PM |
Performance analysis laughable | IntelUser2000 | 2012/01/24 07:30 PM |
Performance analysis laughable | IntelUser2000 | 2012/01/24 07:32 PM |
Performance analysis laughable | David Kanter | 2012/01/24 11:34 PM |
Performance analysis laughable | IntelUser2000 | 2012/01/24 11:56 PM |
Performance analysis laughable | David Kanter | 2012/01/25 02:07 AM |
Performance analysis laughable | Alberto | 2012/01/25 12:54 PM |
Atom HT gain | Wilco | 2012/01/25 05:43 AM |
Atom HT gain | IntelUser2000 | 2012/01/25 06:53 AM |
Atom HT gain | none | 2012/01/25 07:04 AM |
Atom HT gain | IntelUser2000 | 2012/01/25 07:35 AM |
Atom HT gain | Foo_ | 2012/01/25 07:06 AM |
Performance analysis laughable | Wilco | 2012/01/24 08:21 PM |
Performance analysis laughable | David Kanter | 2012/01/24 10:13 PM |
Performance analysis laughable | Wilco | 2012/01/25 04:30 AM |
Performance analysis laughable | none | 2012/01/25 06:14 AM |
Performance analysis laughable | Wilco | 2012/01/25 07:18 AM |
Performance analysis laughable | observer | 2012/01/26 04:17 AM |
Performance analysis laughable | Wilco | 2012/01/26 06:25 AM |
Process numbers | Alberto | 2012/01/26 09:29 AM |
Performance analysis laughable | David Kanter | 2012/02/02 12:38 AM |
Performance analysis laughable | tupper | 2012/01/25 04:27 PM |
Performance analysis laughable | Linus Torvalds | 2012/01/25 08:37 PM |
Performance analysis laughable | Doug Siebert | 2012/01/26 02:12 PM |
Medfield article online | Andreas | 2012/01/25 03:10 AM |
Medfield article online | Alberto | 2012/01/25 09:44 AM |
Medfield article online | IntelUser2000 | 2012/01/25 10:24 AM |
Medfield article online | David Kanter | 2012/01/25 09:58 PM |
Medfield article online | Doug Siebert | 2012/01/26 01:20 PM |
Medfield article online | Eric | 2012/01/26 06:10 PM |
Medfield article online | Doug Siebert | 2012/01/27 02:40 PM |
64-bit | Ingeneer | 2012/01/25 09:28 AM |
64-bit | Foo_ | 2012/01/25 10:23 AM |
64-bit | Ingeneer | 2012/01/25 02:34 PM |
64-bit | Ungo | 2012/01/25 04:08 PM |
64-bit | EduardoS | 2012/01/26 12:55 PM |
Saltwell memcpy | SHK | 2012/01/26 02:41 AM |
Medfield WiFi & Bluetooth | Rob Thorpe | 2012/01/26 03:09 AM |
Medfield WiFi & Bluetooth | David Kanter | 2012/01/27 05:54 PM |
Medfield WiFi & Bluetooth | Rob Thorpe | 2012/01/28 02:22 PM |
Medfield article online (NT) | Anil | 2012/01/26 05:57 PM |
Medfield article online | Anil | 2012/01/26 06:11 PM |
Medfield article online | Mr. Camel | 2012/01/26 06:26 PM |
Medfield article online | none | 2012/01/27 01:41 AM |