Originally Posted by raghu78
OP for a 1680 x 1050 monitor get a HD 7850 2GB. do no think about just today's games , but also games coming out in 2013 and 2014. HD 7850 is the minimum card for playing the latest games at high settings. HD 7850 overclocks very well. At 1 Ghz it matches GTX 570 and at 1.2 Ghz GTX 580. also runs cool and quite. get the sapphire HD 7850 2GB for USD 190 after rebate. Also do not go for 1 GB version as its just not enough even for today's games.
Actually 1GB of vram will still go a long way even at @ 1080p. While its possible to run of vram in some games if you run @ 2560 x1600 is quite rare and the 7850 does not have the GPU power for thous kind of resolutions anyway, at least not if you want to have some settings turned up and have decent frame rates.
As an example we can use BF3 that is the most vram hungry game out there at the moment. See how the FPS is the same for the 1GB card and the 2GB card @ 1920x 1200 with 4xAA
And its only at 2560 x1600 4xAA that the 1GB starts to suffer. But regardless neither the 1GB card or the 2GB variant has enough power to run at thous settings.
And remember BF3 is an extreme case. Most games current and probably thous that come in the near future will run fine with 1GB
Just look at CoD 4. Even with 5760x1080p and 4xAA there is still no difference between 1GB and 2GB.
Is 2GB more future proof? Yes but keep in mind that you might need a faster card before the 1GB vram becomes a limitation. However for crossfire the 2GB version is hands down better.
source-->http://www.techpowerup.com/reviews/Club_3D/HD_7850_RoyalQueen/6.htmlEdited by Bit_reaper - 10/1/12 at 2:15am