Hey guys, I bought an XFX 5870 (non-ref) a few months back, and have always had a problem with getting GSOD and lockups when playing games. At first I thought the card would magically fix itself , but I was wrong. I contacted XFX, and after lots of messing about they have offered me a discounted upgrade - I can either get an XFX 5850 (non-ref) for free, or pay £50 for the 1GB XFX 6950 (again, non-ref). I asked them if I could just get my 5870 replaced, but I've been told that they "cannot replace a product". What do you guys think of this? And do you think I should go for the 6950?