IPC performance increase

[silk186]

I asked a hardware question on the Dolphin emulation forum and received this reply from an admin:

"An i3 4130 @ 3.4GHz is equivalent to i5 3570k @ 4.4GHz in Dolphin Benchmark"

Does that sound legit? Based on my understanding this difference can only be attributed to improvements in IPC performance which should be so significant from the 3xxx to 4xxx CPUs.

If so, what is the performance difference between an if i5-2500k vs i5-4670k it they are both at 3.4?

Is the admins claim legit?

 

[Liger88]

From a technical standpoint, no it makes no sense whatsoever unless the application is optimized for dual cores. Even if that's the case, then the IPC improvements from Sandy > Ivy > Haswell has been 5% between each and 10% under rare best scenarios for certain applications. Of course this is comparing same line across each generation. I don't think emulation fits any of those to warrant a increase like they're saying.

Either the guy got things mixed up, or it just really sucks with anything past 2 cores. Emulation is a whole other beast though.

 

[silk186]

he is basing his numbers off of this data sheet.

Dolphin created a test app for users to run and take a screen shot of the results.

 

[teh_chem]

It's not just the straight ipc gain, but what about new instruction sets.

 

[Liger88]

Theres obviously got to be more to it that isn't being explained for those numbers to make sense. Really hate half-baked excel sheets like these.

 

[silk186]

well, it is a small group, they controlled for as much as they could. I didn't think the numbers were accurate so I wanted to confirm. The admin was recommending i upgrade from my i5-2500k @4.3 to a newer i3 or i5.

 

[Bunhead]

Well a newer i5 wouldn't hurt but only if you planed on ocing it. With the i3 the only way to know is to test it for yourself, emulator benchmarks don't really show the whole picture.