Pixel-filling power
The GeForce 7950 GX2 is really just SLI on a single card, but with a little fudging, it's possible to express the GX2's peak fill rate potential and memory bandwidth alongside the single-GPU cards out there.

  Core clock
(MHz)		Pixels/
clock		Peak fill rate
(Mpixels/s)		Textures/
clock		 Peak fill rate
(Mtexels/s)		 Memory
clock (MHz)		 Memory bus
width (bits)		 Peak memory
bandwidth (GB/s)
Radeon X1600 XT5904236042360138012822.1
GeForce 6800 3258260012390070025622.4
GeForce 6600 GT5004200084000100012816.0
Radeon X80040012480012480070025622.4
GeForce 6800 GS42583400125100100025632.0
GeForce 6800 GT350165600165600100025632.0
Radeon X800 XL40016640016640098025631.4
Radeon X1800 GTO500126000126000100025632.0
GeForce 7600 GT56084480126720140012822.4
GeForce 6800 Ultra425166800166800110025635.2
GeForce 7800 GT400166400208000100025632.0
All-In-Wonder X190050016800016800096025630.7
Radeon X1800 XL500168000168000100025632.0
Radeon X850 XT520168320168320112025635.8
Radeon X850 XT PE540168640168640118025637.8
XFX GeForce 7800 GT450167200209000105025633.6
Radeon X1800 XT62516100001610000150025648.0
Radeon X1900 XT62516100001610000145025646.4
GeForce 7800 GTX4301668802410320120025638.4
Radeon X1900 XTX65016104001610400155025649.6
GeForce 7900 GT4501672002410800132025642.2
GeForce 7800 GTX 5125501688002413200170025654.4
GeForce 7900 GTX65016104002415600160025651.2
GeForce 7950 GX22 * 5003216000482400012002 * 25676.8

....and this little experiment shows us what a monster the GX2 really is. All told, this thing has over twice the peak multitextured fill rate of a Radeon X1900 XT and a whopping 76.8 GB/s of memory bandwidth.

Feed the thing a synthetic fill rate benchmark, and it proves those numbers are for real:

No other "single" card comes close. Of course, taking advantage of this power in the real world could prove tricky. Let's move on to some games and see what happens.