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Performance difference between 1GB and 2GB HD 6950?

post #1 of 16
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How big is the performance jump from 1GB to 2GB when playing games? I know it shouldn't effect it all too much, but I want a 6950 pretty bad and the 1GB one is cheaper, which means I could buy some other stuff with it too.
post #2 of 16
You won't notice much of a difference (maybe 1-5 fps) Only at resolutions like 5680x1060 (I don't know much about the big resolutions) will 1gb of vram be all used.
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post #3 of 16
Not at all unless you are using eyefinity or crossfire.
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post #4 of 16
There is no difference at lowish resolutions.

In eyefinity resolutions you will see a difference, and possibly with very high levels of AA in 1920x1080.

The only downside is the 1gb cards are all non-ref, so are less likely to flash to a 6970.
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post #5 of 16
There isn't much of a difference between the 1 and 2 gb models performance wise, but overclocking wise, the 2 gb reference models can be unlocked to the 6970 for a 5-10% performance gain
    
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post #6 of 16
People keep bringing up unlocking so I'm going to say this. It is unsafe to unlock and there is a good chance it will kill your card. The safer bet is to just unlock the shaders which I have heard of people doing on the 1gb 6950.
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post #7 of 16
Quote:
Originally Posted by nbmjhk6 View Post
People keep bringing up unlocking so I'm going to say this. It is unsafe to unlock and there is a good chance it will kill your card. The safer bet is to just unlock the shaders which I have heard of people doing on the 1gb 6950.
People keep saying 'unlocking' because (in my case anyway) they are referring to purely unlocking the extra shaders by flashing a modified 6950 bios.

Also, very very few people have problems with flashing a full 6970 bios, and in flashing the 6970 bios, it appears you're able to achieve higher memory clocks to push past the ecc/bandwidth barrier.

I still would rather not flash the 6970 bios, though
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post #8 of 16
its hit and miss for unlocking the 1gb's shaders (only possible on a few cards), but it is possible on all 2 gb reference models.
    
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post #9 of 16
Here is just a few examples with the 1gb vs 2gb versions.
post #10 of 16
Err, its not only resolution that soaks up vram like, if you like maxing AA, AF, MS and all that malarky, then why not get it, as its better to have too much then too little. for like €20 difference lol
Edited by Asmodean - 5/19/11 at 10:15am
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