Your GeForce 8600 GTS is known to run hot like that.
I am just curious, is your GeForce 8600 GTS a redistro brand like PNY or is it a genuine Nvidia brand video card? I ask this because GeForce video cards can be released under other vendors names and I want to know what yours is so I am comparing it with the correct specs.
I have heard these cards can handle up to 180c, but that is not to say the motherboard slot and surrounding hardware to the slot are agreeing with that extreme of a temperature.
Your video card does have an exhaust that blows out the back of the case through one of the PCI slot covers correct?
I am one of those people that when I do internal maintenance on a computer, I will even take the cooler off of a video card and re-apply thermal grease after removing the older broken down grease that the factory had put there during manufacturing.
Try adding a few more case fans to your computer case if you can, believe me when I say one of my computer systems has 12 cooling fans in it, that includes two in the PSU and the one on the CPU.
My video card did not come with a cooling fan, just a heat sink, but I added a 2 inch fan commonly used on a CPU to my GeForce 6200's heat sink, it certainly does make a difference, so basically the rest of those cooling fans are in the front, side and back areas of my tower.
The only major issue is dust, the tower I speak of is close to the floor and near the entry to my apartment, so it sucks in a lot of dust because of its location with all the air suction taking place, I just clean it out every two weeks.
So I suggest you increase the air flow as much as you can, place cooling fans in the front blowing in and cooling fans in the rear blowing out the back.
Adding a cooling fan to the side can be difficult, because not many tower have air vents on the side panels, so if you want to get around that problem, do what I did with one tower, I simply hung a 4 inch cooling fan from the upper frame area and pointed it towards the CPU and NorthBridge chip area, it certainly made a difference to the temperature of the air before hitting the CPU cooling fan.
Edited by MrBruce1959, 09 September 2011 - 12:43 AM.