Enemy Territory: Quake Wars
We disabled the integrated frame rate limiter in the game console for the sake of comparing the cards. The game’s built-in benchmarking options do not provide information about the bottom speed, so there is no such info in the diagrams.
The GeForce GTX 275 is a mere 3-6% slower than the GeForce GTX 285. It is only at 2560x1600 that the gap grows up to 10%, but overclocking helps close the gap. The overclocked GeForce GTX 275 also wins the lower resolutions. The GeForce GTX 285 seems to have a shaky market position now, considering these results.
Far Cry 2
Like in the previous cases, the GeForce GTX 275 is almost as fast as the senior model of the series. Most importantly, it can maintain a playable frame rate at 2560x1600 despite having only 896 megabytes of graphics memory. The Radeon HD 4890 is equipped with 1 gigabyte of memory but is inferior to Nvidia’s solution as its bottom speed is lower than 10fps.