The cards were tested at 1920x1200 and 2560x1600 using the engine's built-in performance test with CPU/graphics settings on both High and Maximum. Below are graphs comparing the minimum, average and maximum framerates at 2560x1600 with both levels of detail.
F.E.A.R. 2560x1600 Results
The results were very promising. The 640MB GTS has only a slight edge over the 320MB version at Maximum settings and with the game knocked down the High, the 320MB catches up almost completely, with its average framerate meeting and beating the 640MB card and the maximum beating consistently. The minimum was still substantially below the 640MB card, but all things considered the experience between cards would likely be identical. Below are the graphs showing the same quality settings at 1920x1200.
F.E.A.R. 1920x1200 Results
This time, the 320MB card definitely shows that speed still means more than sheer volume of RAM. While falling behind a bit at Maximum engine settings, the 320MB screams back at High settings beating the 640MB card through and through for all intents and purposes.
Next, the cards were run through the Source Engine.
