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Pixel-filling power
Since the 7950 GT is one of many spins on the same basic GPU technology, it's instructive to look at how it compares with other cards in some key specifications. The table below mainly concentrates on peak theoretical fill rate, or the ability to draw pixels or textured pixels (texels) on screen. However, keep in mind that graphics card performance these days is also limited by some other important factors, including the computational throughput of a card's vertex and pixel shader processors, as well as memory bandwidth. We have included memory bandwidth numbers below.

  Core
clock
(MHz)
Pixels/
clock
Peak
fill rate
(Mpixels/s)
Textures/
clock
Peak
fill rate
(Mtexels/s)
Effective
memory
clock (MHz)
Memory
bus width
(bits)
Peak memory
bandwidth
(GB/s)
Radeon X1650 Pro6004240042400140012822.4
GeForce 7600 GT56084480126720140012822.4
All-In-Wonder X190050016800016800096025630.7
Radeon X1800 GTO500126000126000100025632.0
GeForce 7800 GT400166400208000100025632.0
Radeon X1800 XL500168000168000100025632.0
GeForce 7800 GTX4301668802410320120025638.4
Radeon X1900 GT575126900126900120025638.4
GeForce 7900 GS450167200209000132025642.2
GeForce 7900 GT4501672002410800132025642.2
XFX GeForce 7900 GS 480M480167680209600140025644.8
GeForce 7950 GT5501688002413200140025644.8
BFG GeForce 7950 GT OC5651690402413560143025645.8
Radeon X1900 XT62516100001610000145025646.4
XFX GeForce 7950 GT 570M5701691202413680146025646.7
Radeon X1800 XT62516100001610000150025648.0
Radeon X1900 XTX65016104001610400155025649.6
GeForce 7900 GTX65016104002415600160025651.2
GeForce 7800 GTX 5125501688002413200170025654.4
Radeon X1950 XTX65016104001610400200025664.0
GeForce 7950 GX22 * 5003216000482400012002 * 25676.8

The 7950 GT is intended to be positioned between the 7900 GS and the 7900 GTX, and overall, it is. Yet the gaps between the various Nvidia offerings aren't too big, especially once you take into account the "overclocked-in-the-box" versions of the 7900 GS and 7950 GT from XFX—both of which we're testing here. Then there are ATI's offerings, which are a little low on multitextured fill rate, although that rarely seems to affect performance. The Radeon X1900 XT 256MB matches the XFX 7950 GT's memory speed almost exactly. Let's see how the cards handle in a synthetic fill rate test.

The 7950 GT slots into the GeForce lineup about where expected. Also as expected, the Radeon X1900 XT 256MB doesn't quite have as much oomph. That may not matter much when it comes time to run newer games with lots of shader effects, though.