Trackmania United is 100% stable for me. They only game that I am having trouble with in terms of stability is STALKER, but I am not sure if that is CPU/memory related or my graphics card.

The 8.3 hotfix driver solves Powerplay issues, which makes Trackmania playable, but I'm still not 100% happy with the performance of my 3870 @ 850/2050Mhz. It's not a big improvement over my old card, a x1950xtx.

Gigabyte refuse to supply me with a BIOS to unlock the card, which is bloody annoying. I wish they would, as I feel there is a lot more potential in my card.