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8800GT Overclock Not Doing Affecting Performance?

post #1 of 11
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stock speed for my 8800GT is 625/1566/1800 and I can overclock it up to 740/1800/2000. yet when I do that, I see no performance increases in my games and only a 800 point increase in 3dmark06 score (from 11000 to about 11800).
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post #2 of 11
The chipset (BFG, EVGA, etc.) all matters in how far you can go and of course the drivers help out too. You may have chosen a weaker card and need to upgrade to get closer to what you want. Also try going with some more RAM.
    
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post #3 of 11
How much difference you'll see from any overclock is going to depend on the particular game and settings. You have a 19" monitor, so chances are you're playing at 1280x1024, which is a resolution where cpu limitations often come into play. You don't have the fastest cpu out there, I strongly suspect that is playing a large role, both on 3dmark, and on the games you've tested so far.

Try running the crysis gpu bench on high (or very high) and I bet you'll see an improvement in frames more commensurate (percentage-wise) with the increases to your gpu clock speeds, cause that test for sure won't tax out your cpu. Vantage would also be a good candidate. If you are expecting something like your CS:S bench to go up (i.e. anything that runs VERY fast already), you aren't likely to see from oc'ing your gpu cause that ain't the limiting factor to your score.
    
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post #4 of 11
Quote:
Originally Posted by Ao2 3lit3 snip3r View Post
The chipset (BFG, EVGA, etc.) all matters in how far you can go and of course the drivers help out too. You may have chosen a weaker card and need to upgrade to get closer to what you want. Also try going with some more RAM.
Wow, video cards have chipsets now? And they're made by BFG, evga, etc?

Golly, here on OCN I swear I learn something new every day...
    
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post #5 of 11
Haha yep.

It takes a huge OC to affect a video card. Did for me anyways... they're fast anyways, so making them faster is hard... and it's not a linear improvement either... kind of like a logarithmic one
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post #6 of 11
Quote:
Originally Posted by nirvania View Post
stock speed for my 8800GT is 625/1566/1800 and I can overclock it up to 740/1800/2000. yet when I do that, I see no performance increases in my games and only a 800 point increase in 3dmark06 score (from 11000 to about 11800).
idk me and my buddy saw a big increase form a stock quad and stock card to quad at 3.7 and card at 775/1915/2000 5-6k increase on 3dm06 and better game performance
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post #7 of 11
Quote:
Originally Posted by se7en56 View Post
Haha yep.

It takes a huge OC to affect a video card. Did for me anyways... they're fast anyways, so making them faster is hard... and it's not a linear improvement either... kind of like a logarithmic one
Not to be nit-picky, but technically a logarithmic improvement would be even better than a linear one

I would also point out that whilst its quite rare, there ARE actually conditions wherein one will literally see performance scaling exactly linearly from overclocking. It all depends on whether raw clock speeds compose the entirety of the limitations on performance in the particular scenario. As I say, this is rare, but entirely possible.

Although this equation is not 100% 'card-dependent', with certain cards it's far easier than with others to achieve linear scaling. The 8800GTX makes for a good example, since it has a very wide memory bus, lots of vram, lots of shaders, lots of ROP's. IOW, the 'other things' that COULD be limiting factors are pretty damn powerful, and thus unlikely to be actual limiting factors. This leave clock speeds to be the primary mechanism for performance improvement, and the 8800GTX does in fact exhibit very close to linear performance scaling in a lot of test scenarios.
    
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post #8 of 11
That is strange. I noticed almost a 1k increase in my scores on my lowly 8600GTS however I put very little stock in synthetic benchmarks and tend to let my overclocks to the talking by using FRAPS to gauge any performance increase.
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post #9 of 11
Quote:
Originally Posted by brettjv View Post
Wow, video cards have chipsets now? And they're made by BFG, evga, etc?

Golly, here on OCN I swear I learn something new every day...
Were you being facetious, video cards have always had chipsets. You know CPU's, they're pretty much the same, but the chipsets and transistors are what's different.
    
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post #10 of 11
did the new drivers help this card out any?
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