Of all the games out there, especially in the first person shooter genre, I would have to say that Prey is my current favorite. The setting, while not original, has been revamped enough to make outer space alien fighting fun again; the weapons, while too few in number, are pretty fun, and the alternate fire modes help make them more fun that they otherwise would be. The graphics are first-rate as the Doom 3 engine has never looked this good or played so smoothly.
To see what the NX7900GT could do in the OpenGL goodness that is Prey, I tested an area three times, which included multiple gravity walks in a room with an infinitely high-ceiling and a view to space, combat with a number of creatures (the ones that come in and out of the walls on four legs and fire those "rockets" as their weapons), at 1024x768, 1280x1024, and 1600x1200. All settings were maxed, including 4X AA and 16X AF. With those settings at 1600x1200, Prey was pretty brutal to my dual 7600 GTs, so I was expecting the NX7900GT to perform only slightly better.
Boy was I surprised.
Would you look at those averages! This goes to show what a well-coded game Prey ended up being and what a serious powerhouse the NX7900GT actually is – especially with OpenGL-based games. Even at 1024x768, I expected there to be a dip in the frame rate into the 30s or at least 40s, but the lowest the game ever went was 57fps! I'm still reeling from that. And I will gladly take a 40.1fps average at 1600x1200 with the graphics settings maxed out. Prey played buttery smooth no matter the resolution or graphics settings.