
April 5th, 2008, 11:21 PM
|
 |
Vid card geek
|
|
Join Date: Sep 2004
Location: Austin Texas
|
|
Typically the amount of memory is not the limitation and users can see a MUCH larger impact from the speed of the memory than the quantity on board. For example a card with 512mb of GDDR3 running at 2000mhz will be a better option than the same card with 1gb of GDDR3 running at 1800mhz or 1900mhz. If the two cards you have chosen run at the same speed for the memory, the performance should be the same. The 1gb model would likely have higher latancy which would (in most cases) out weigh the performance gained from the larger frame buffer. As it stands, Ive yet to see ANY game or setting really be able to utilize more than 512mb of graphics memory, even Crysis at 1920x1200 on high settings will only use ~300mb. Pushing the resolution further and enabling settings like AA or AF filtering to improve visual quality will put more memory to use, but lets be honest...the 8800GT wont be playing crysis at 2560x1200 on highest settings with 8x AA and 16x AF...the card is simply too weak. Running two of them in SLI would probably benefit as SLI leaves the frame buffers independent, so graphics memory plays a bigger role in that scenario.
So if your a high resolution gamer or enjoy pumping out the graphics to the absolute highest you can, you may see a benefit from the additional ram, or of you intend to go with a 2nd card for SLI at some point (along with a bigger monitor  ) then I would suggest the 1gb card. But realistically there may not be ANY performance difference between the 1gb and 512mb versions of the same card (assuming both are at the same clock speeds), and it is entirely possible that the 1gb card end up slower than the 512mb (again assuming both cards run at the same speed) due to added latency.
If the 1gb card is the same price as the 512, go with the 1gb...if the 1gb is cheaper...by all means go with it...if the 1gb is more expensive I really wouldnt bother.
__________________
|