x1950PRO : gpu@600 / mem@700 / 12 rops / 36 ps pipeline
x1900XT : gpu@625 / mem@725 / 16 rops / 48 ps pipeline
x1950XT : gpu@625 / mem@900 / 16 rops / 48 ps pipeline
trois tests :
http://www.pcinpact.com/a-253-18-8600GT_8600GTS_G84.htm
http://www.hardware.fr/articles/664-12/nvidia-geforce-8600-gts.html
http://www.hardwarezone.com/articles/view.php?id=2122&cid=3&pg=5
selon pcinpact il y a 27.5% d´écart