|Well if you are asking this only in regards to the chip itself, I believe that AMD considers 65 C the max temp for their current CPU line-up. Not sure if this is true with the AMD 9950, but I know that I would be worried at anything above 60 C, especially with a quad core. For AMD chips the sweet spot is to not break 55 C. When was the last time that you cleaned the CPU and heatsink and reapplied your thermal paste?|
I'm using a Phenom II x4 965 and I don't even hit 55 C running at 4Ghz so that just seems high to me, especially if you are using an aftermarket cooling solution.
Antec Three Hundred Mid Tower
AMD Phenom II X4 965 3.4GHz @ 4GHz stock heatsink
2x2GB G.Skill DDR3 1333MHz @ 7-7-7-21 2T, 1.5v
Nvidia GTX 460 1GB 830mhz core/1660 shader/2100mhz memory