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GTX470 915mhz OC Versus GTX580 stock clocks? - Page 3

post #21 of 118
Thread Starter 
Quote:
Originally Posted by DimmyK View Post
Holy cow, that's a 50% increase in clocks vs stock on 470! Great job. If 50% clock increase translates to at least 30% performance increase, I think it can match stock 580 performance.

How about we run some benches to compare? I'll drop my clocks to 580 reference; we can start with heaven 2.5 maxed out. I definitely want to see how 470 performs @ 915.
I'd like to but my processor is a phenom x4 840 so I don't think it would be fair results. Maybe when I get my bulldozer set up going with this gpu.
    
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post #22 of 118
General idea:

GTX 580 SLI @ 866 core // 1030 mem:

http://3dmark.com/3dm11/1587455

G1 58.10
G2 60.87
G3 86.63
G4 40.71

GTX 470 SLI @ 900 core // 1051 mem:

G1 52
G2 55
G3 78
G4 38

Percent difference the GTX 580 is faster:

G1 10.4%
G2 9.6%
G3 9.9%
G4 6.6%

The GTX 580 has a 10.8% core/shader overclock vs stock with a 2.4% memory OC. The gtx 470 has a 32.6% core/shader overclock vs stock with a 20.3% memory OC.

Take from it what you wish.
Edited by BallaTheFeared - 8/7/11 at 12:09am
    
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post #23 of 118
You will have this on water, right?

Easy fix, oc 580 to 900-950, bye bye 470s @ 900
post #24 of 118
Indeed, 580s with a hefty overclock are going to smoke a 900 core 470 by about 20% (In SLI) - And that is at resolutions and in games that aren't bottlenecked by the 1.28gb of vram the 470 has. The higher the res the further the 580 is just going to walk away.
Edited by BallaTheFeared - 8/7/11 at 12:14am
    
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post #25 of 118
For the money, the 470 is still a giant (stock) killer imho.
post #26 of 118
Quote:
Originally Posted by BigCactus View Post
If I'm at 915 core stable on a gtx470 I'm theoretically faster than a gtx580 right?
May i ask with what cooling and voltage you're reaching 915 core on your 470 if you actually are ? And what brand is your GTX470 ? I wonder how to improve the OC on mine but i'm with Air aftermarket cooling.
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post #27 of 118
Thread Starter 
Quote:
Originally Posted by Cryo123 View Post
May i ask with what cooling and voltage you're reaching 915 core on your 470 if you actually are ? And what brand is your GTX470 ? I wonder how to improve the OC on mine but i'm with Air aftermarket cooling.
It's actually a pny gtx465 I picked up for the $99 newegg sale, and it is fully unlocked to a gtx470(including memory). So it is a 470. Kind of like putting a v8 in a v6 mustang for free

Then I strapped an Antec Kuhler H20 cooling unit on it. It's like the corsair H50 but more compact. See sig:



At 915mhz, voltage was at 1.062

I'd like to take it to 950 but don't know how to remove the limit on afterburner. That's as far as I want to go any way. It looks like this card would max out at 940 core if I maxed the voltage on afterburner. I don't think I'd reach 950(furmark stable at least).
    
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post #28 of 118
Quote:
Originally Posted by BigCactus View Post
I don't think I'd reach 950(furmark stable at least).
Are you using Furmark to test your OCs? All Furmark is really good for is gauging your thermals (and it's unrealistic in that regard as well).

That voltage sounds really low for that OC. OCCT, Heaven, Crysis, Metro etc are much better stress tests.
post #29 of 118
Quote:
Originally Posted by Booty Warrior View Post
Are you using Furmark to test your OCs? All Furmark is really good for is gauging your thermals (and it's unrealistic in that regard as well).

That voltage sounds really low for that OC. OCCT, Heaven, Crysis, Metro etc are much better stress tests.
Or folding at home. I always run my hardware at F@H stable speeds. My i7 folded for over 1000 hours straight @ 4.75 GHz. My 470s did about 80 hours of folding (wasn't worth the PPD after all).
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post #30 of 118
the 470 is nowhere near the 570, the 570 is like a mildly overclocked 480 with less vram.

it takes an overclock of 838 on the core and 2004 on the mem for a 480 to match a stock 580 at 772core.
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