Just got my MSI GTX 280 SuperOC (stock overclocked at 700/1150/1400). Running Furmark w/ MSAA 8x stability test, core temperature went up to 87C (100% fan speed), is that ok? First Furmark w/ MSAA 4x run was different though, fan speed was 56% and card was at 79C, strange.
Running Spore @ 2560x1600 keeps the graphics core around 78C, and fan is very quiet.
Idle temp in Vista is around 62C.