Hey fellas, I'm new here, and I have been working on my x800 ?? for some time now. I am a member of EOCF and sense i get most of my info from here on this subject, I will ask the pro's. I have a x800XT ( suppose to be ). It reads as a R423 but only has 12PP. It is not a vivo, but there are no laser cuts on the PP bridges or on the die. It clocks at 400 core 400 mem. I don't think there was a x800 card with those speeds. Please check out this thread. I would love the insight. http://forums.extremeoverclocking.com/showthread.php?t=288150 It has all the ati tool info, and readings. I just don't understand.