We've talked a little bit about shader power and memory bandwidth, but let's pause here to look at pixel and texel throughput alongside memory bandwidth. Shader power is becoming more and more prevalent in newer games, but these old-school metrics still dictate part of the performance picture. As expected, the Ultra's at the top of the heap in nearly every measure.
| Peak memory|
|GeForce 7950 GT||550||16||8800||24||13200||1400||256||44.8|
|Radeon X1900 XT||625||16||10000||16||10000||1450||256||46.4|
|GeForce 7900 GTX||650||16||10400||24||15600||1600||256||51.2|
|Radeon X1950 XTX||650||16||10400||16||10400||2000||256||64.0|
|GeForce 8800 GTS||500||20||10000||24||12000||1600||320||64.0|
|GeForce 8800 GTX||575||24||13800||32||18400||1800||384||86.4|
|GeForce 8800 Ultra||612||24||14688||32||19584||2160||384||103.7|
Yep, the 8800 Ultra has about twice the memory bandwidth of the GeForce 7900 GTX, believe it or not, and it leads in the other categories, including pixel fill rate, texturing capacity, and "impresses the chicks." The only way any existing solution could keep up would be in a multi-GPU configuration. We can measure several of these capabilities via synthetic benchmarks, to see if the Ultra lives up to its potential.
The Ultra comes very near to its theoretical peak for multitexturing, as do the other solutions we've pitted against it.
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