F.E.A.R.2: Project Origin
The GeForce GTX 275 is close behind its senior series mate again and delivers comfortable performance even at 2560x1600. Considering that some makers have released versions of this graphics card with a double amount of memory (1792 megabytes), purchasing a GeForce GTX 285 doesn’t make sense because the small difference can be made up for by even modest overclocking that won’t not affect the stability of your GeForce GTX 275.
Left 4 Dead
The game runs on the Source engine and has an integrated benchmark, but the latter does not report the bottom speed information.
Left 4 Dead is sensitive to the cut-down configuration of the GeForce GTX 275 at 2560x1600: the new card falls behind the GeForce GTX 285 by 21% then.
However, the gap is only 5-8% at the lower resolutions, which cannot be perceived with a naked eye since the frame rates are as high as 55-120fps.
S.T.A.L.K.E.R.: Clear Sky
To achieve a playable speed in this game we disabled FSAA and such resource-consuming options as Sun rays, Wet surfaces and Volumetric Smoke. We use the Enhanced full dynamic lighting (DX10) mode for our test and additionally enable the DirectX 10.1 mode for the ATI cards.
We can’t see much difference between the GeForce GTX 275 and GeForce GTX 285 in the highly demanding S.T.A.L.K.E.R.: Clear Sky even at 2560x1600. Both cards deliver playable speeds at resolutions up to 1680x1050/1600x1200.