Despite its old engine, this game is demanding enough that low-end graphics hardware isn't playable at 1280x720. Configured for our lowest-detail preset at 1280x1024, the Radeon HD 6450 and GeForce 210 DDR3 are simply too slow.
See how the frame rates bounce up and down toward the end of the benchmark? That's a result of a difficult-to-render depth-of-field (DoF) effect as you zoom down your gun sights, run out of ammo, and zoom back out to reload. As you can see, DoF can slow the frame rate down considerably, even at this entry-level setting. We're expecting the impact to increase at higher detail settings.
The GeForce GT 630 GDDR5 (also known as the GeForce GT 440 GDDR5) and Radeon HD 6670 DDR3 are still viable at 1280x1024, but let's see what happens when the resolution increases to 1920x1080.
As we suspected would happen, the higher resolution is too much for AMD's Radeon 6670 DDR3 and Nvidia's GeForce GT 630 GDDR5. However, the GeForce GTX 650 and Radeon HD 7750 generate smooth-enough frame rates.