Benchmark Results: Sandra 2009, PCMark Vantage, 3DMark Vantage

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2:00 AM - 08/21/2009 by Patrick Schmid and Achim Roos
Talkback
xc0mmiex 08/21/2009 8:34 AM
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doomtomb 08/21/2009 8:45 AM
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-17+

So in the conclusion, newer steppings = better product

Not surprised

anamaniac 08/21/2009 9:43 AM
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-0+

doomtomb :
So in the conclusion, newer steppings = better productNot surprised



Yeap.

Hoping my 920 coming is a D0 though...

winterlord 08/21/2009 10:04 AM
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-7+

hmmm did i miss something, or is there temputer specs on hyere? would be great to see what the temps are both at 3.33 and overclocked at 4ghz please, please, please :D

ewood 08/21/2009 12:30 PM
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-9+

so the 975 was stable at slightly less voltage and reached less than 200mhz higher STABLE clock. seems like that could very easily be due to variances in manufacturing and not the stepping itself. there have been many 965s to reach 4.2 or 4.25 stable on air which would have been higher than the 975. then again toms could have got a bum D0... I woudn't say from this article that the D0 is clearly superior to C0, but that's just me and my stat classes talking

Anonymous 08/21/2009 1:13 PM
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-3+

On page 5 (Overclocking Core i7-965 (C0): 4.0 GHz) in the last image the cpu-z vt is 1.8V, for 3.743 - 4.009 GHz identical with the CPU PLL. I don't think that is correct.

sublifer 08/21/2009 1:30 PM
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-3+

Quote :the D0 processor overclocked up to 4.27 GHz, but wasn’t stable until we reduced to 4.14 GHz. The older Core i7-965 Extreme couldn’t even do this.
You make it sound bad that the 965 couldn't eke out another 3.5% to tie the 975. Whoop-de-do That variance could be seen between different 975's or 965's. 3.5% is not significant at all. The voltage improvements looked nice under load but again, you'll probably see the same variance between chips of the same model. Show us 10% plus differences and then maybe we can call it news.

Anonymous 08/21/2009 1:31 PM
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-1+

I've purchased recently i7 920 and found out, that overclocked to 3.33GHz works absolutely stable on 1.024V under full load (Seti@Home). Consumption vent down by nearly 100W and temperature by 15 degrees centigrade. Marvelous, isn't it?

sublifer 08/21/2009 1:35 PM
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--2+

Addition:
At 3.5% performance improvement per year we'll see a gain of 10% in about 3 years. If you think about it that way its utter crap. I can appreciate improved steppings but as we can see, its nothing to get excited over.

adbat 08/21/2009 2:53 PM
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-6+

I think underclocking should be a standard test - I like power efficiency and I do wonder how that would affect performance/stability

alanman 08/21/2009 3:11 PM
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Pei-chen 08/21/2009 3:53 PM
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eyemaster 08/21/2009 4:34 PM
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-0+

I've read that steppings fix known bugs in processors but I never asked a question on it.

If there's a bug in the processor, wouldn't it cause the CPU to give bad data or execute improperly? Possibly crash? How can a bug not be a bug?

ta152h 08/21/2009 5:41 PM
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This is a really interesting article. Probably the people saying the differences are insignificant have the C0 i7, and are feeling queasy about it. They need to rationalize it.

I think it's really significant when you can get so many small improvements that add up to a big one.

I do have one complaint though. I'd have liked to see the power at 4.0 GHz for each. That would have really helped people see difference between the processors, since the power difference would have been far greater than at 3.33 GHz.

For anyone reading this saying it's not significant, would you even want a C0 now, or would you make sure you were getting a D0? Yes, I thought so.

GoOakland 08/21/2009 6:04 PM
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I went to the ark link but I'm still confused. How can you tell if you are getting a C0 or a D0?

winterlord 08/21/2009 6:15 PM
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to oakland, to get a DO stepping. you must cross your fingers and look to the sky :D really you can't order a DO stepping so it's the luck of the draw. there are a few places that will gaurantee your stepping version but iv never personaly ordered from the off sites. only newegg where i buy stuff at.

Kill@dor 08/21/2009 6:15 PM
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-0+

Nice review. I thought the 975 have much higher performance value over 965. I still think the difference in performance will show when you overclock to 5GHz on both chips...i'd really like to see those numbers.

winterlord 08/21/2009 6:16 PM
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-0+

also power at 4ghz and temps please :)

marraco 08/21/2009 6:39 PM
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-0+

Does the i7 920 behaves equally?

the 920 is far more popular. Almost any benchmark is done with it.

NuclearShadow 08/21/2009 6:48 PM
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As a owner of a i7 920 C0 @3.6 ghz I really don't care much about the new stepping its not like the improvement is gigantic like a whole new CPU. If you order one and get a C0 instead of a D0 its nothing to rip your hair out about they are still awesome CPU's and great to OC.


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