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What/How do you benefit from more VRam? - Page 2

post #11 of 13
To date other than possibly the 69xx series cards (because you can flash up the 6950 to 6970 unlocking more shaders), there is no real advantage to higher VRAM in a single GPU solution as there is not enough power to handle anything that uses that much ram.

for example, the 5870 which is a reasonably powerful card:

http://www.hardwarecanucks.com/forum/hardware-canucks-reviews/30635-sapphire-hd-5870-2gb-toxic-edition-review-18.html

The only place where it outshines the 1GB model is at 2560, but then it still doesn't have enough power to provide playable framerates, so...

(in a less intense game http://www.hardwarecanucks.com/forum/hardware-canucks-reviews/30635-sapphire-hd-5870-2gb-toxic-edition-review-12.html even at 2560 there is no real difference).

even with 8x AA on, still little difference

http://www.hardwarecanucks.com/forum/hardware-canucks-reviews/30635-sapphire-hd-5870-2gb-toxic-edition-review-20.html
Edited by ocpokey - 3/9/11 at 11:41am
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post #12 of 13
Thread Starter 
@mothrpe
Nice find. It makes a lot of sense.

That's what I had in mind that it depends on what game and if it has lots of details and objects around such as GTA 4.
post #13 of 13
My favourite article on the difference between 1GB and 2GB models of GPU:

http://www.widescreengamingforum.com...eatured_Review


To sum up the difference, the amount of vRAM you have is almost unnecessary providing you have more than enough to run the game. If you need more, you'll see huge performance drops.

For your "average" person (who will use a small amount of AA/ Antrisopy and one monitor), you generally won't need above 1GB. If you use lots of AA etc and a game with really high resolution textures, but only one monitor, sometimes up to 1.5GB might be useful. Across multi-monitor setups, 2GB is often necessary for more than two monitors.


Note: That's not quite 100% true, but is a nice way of seeing it. Read the articles posted in this thread for more detailed info.
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