The Elder Scrolls IV: Oblivion
We tested Oblivion by manually playing through a specific point in the game five times while recording frame rates using the FRAPS utility. Each gameplay sequence lasted 60 seconds. This method has the advantage of simulating real gameplay quite closely, but it comes at the expense of precise repeatability. We believe five sample sessions are sufficient to get reasonably consistent and trustworthy results. In addition to average frame rates, we've included the low frames rates, because those tend to reflect the user experience in performance-critical situations. In order to diminish the effect of outliers, we've reported the median of the five low frame rates we encountered.

We set Oblivion's graphical quality settings to "High." The screen resolution was set to 1600x1200 resolution, with HDR lighting enabled. 16X anisotropic filtering was forced on via the cards' driver control panel.

Quake 4
In order to make sure we pushed the video cards as hard as possible, we enabled Quake 4's multiprocessor support before testing.

F.E.A.R.
We've used FRAPS to play through a sequence in F.E.A.R. in the past, but this time around, we're using the game's built-in "test settings" benchmark for a quick, repeatable comparison.

All in all, the GX2 looks very potent compared to the single-GPU cards.