You should add some cards anyway,because helpcenter is full of requests
Ok,serious now.Those card comes from "ready pc's" from China which you can buy in Medion Supermarket's and others.This is 8600GT TC 512mb version,which is nothing else like 128mb version,but you'll find out on the picture.This is same card like all 7300tc,6200tc etc...just cheap and very,very slow,could say more than twice slower than others 8600gt's even more(just a cut version of standard 8600gt)
2x64mb :
here's the box-hehe
everest,gpu-z and riva tuner show exactly same informations:
if you need more proofs just let me know,but this is not a bug just a terrible slow card which I use to watch HD on my big TV