David Kanter (dkanter@realworldtech.com) on 1/24/12 wrote:
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>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%+.