Dolphin, the GameCube and Wii emulator - Forums
Less power get better performance ¡?¿! - Printable Version

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+--- Thread: Less power get better performance ¡?¿! (/Thread-less-power-get-better-performance-%C2%A1-%C2%BF)

Pages: 1 2

RE: Less power get better performance ¡?¿! - kinkinkijkin - 06-20-2014

Though, I hadn't seen it done much until one post where he did it, and then after that post, everyone started doing it.

RE: Less power get better performance ¡?¿! - hackar - 06-20-2014

I can make a benchmark on both architecture and post some numbers.
I would need a homebrew benchmark rom file or a dolphin benchmark tool.

Let me know what I should use and I will post the result:

I can test on:
- i7 nelhalem
- i5 sandy bridge
- i5 Haswell

RE: Less power get better performance ¡?¿! - admin89 - 06-20-2014

Quote:It's way more than that. Sandy bridge was a huuuuuge boost for Dolphin.
Then how come do both i5 760 @ 3.8GHz and i5 750 @ 3.7GHz beat i7 2600k @ 3.4GHz & i5 2500k @ 3.3GHz in Dolphin Benchmark ?Just do a math and see Sandy Bridge is slightly faster than Nehalem (not even 10%)
Ivy Bridge is barely faster than Sandy Bridge , as you can see in the benchmark : i7 3770 @ 3.9GHz is barely faster than i5 750 @ 3.9GHz
Up till now , only Haswell is able to give Dolphin huge boost (30% performance gain)
Edit : Well , i'm pretty sure i5 2600k and i5 2500k have turbo boost enabled by default , if you add turbo boost in calculation then it's clear that
Quote: i7 3770 @ 3.9GHz is barely faster than i5 750 @ 3.9GHz
In fact , I did a benchmark between i5 480M @ 2.93GHz and i5 2410M @ 2.7GHz . Both CPU performance are identical

RE: Less power get better performance ¡?¿! - Anti-Ultimate - 06-20-2014

[quote='admin89' pid='328450' dateline='1403261813']
[quote]
It's way more than that. Sandy bridge was a huuuuuge boost for Dolphin.
[/quote]
Then how come do both i5 760 @ 3.8GHz and i5 750 @ 3.7GHz beat i7 2600k @ 3.4GHz & i5 2500k @ 3.3GHz in Dolphin Benchmark ?Just do a math and see Sandy Bridge is slightly faster than Nehalem (not even 10%)
Ivy Bridge is barely faster than Sandy Bridge , as you can see in the benchmark : i7 3770 @ 3.9GHz is barely faster than i5 750 @ 3.9GHz
Up till now , only Haswell is able to give Dolphin huge boost (30% performance gain)
Edit : Well , i'm pretty sure i5 2600k and i5 2500k have turbo boost enabled by default , if you add turbo boost in calculation then it's clear that
[quote]
[/quote]

Both Sandy Bridges were downclocked according to this sheet. Also, the first generation i7/i5's were overclocked, which is exactly the reason delroth didn't include them. To not cause confusion.