Hi, I got the Accelero S1 passive heatsink from Arctic Cooling to replace the crappy and loud stock heatsink/fan that came with my PNY 8800Gt.
 
When I first installed the Accelero S1, idle temps dropped to low 50s and load would go mid 60s.
 
The problem is that it has been over a week since I installed it and the temps have spiked to 60 idle ! It has gotten warmer here, and ambient room temp has probably risen 3-4 degrees, but that doesn't explain why idle temps have jumped by almost 10.
 
i even have my side panel open and it's still at 62 idle right now... i also noticed some artifacting while playing battlefield 2.  Should I try and reseat the accelero heatsink with some arctic silver 5?
 
does anyone else get really high temps with accelero S1?
 
Thanks.

Not when you use these (or any fan)
 
http://www.newegg.com/Product/Prod [...] 6835186021

Ambient Temp has a big effect on GPU/CPU temps from what I've observed. Even that little change can bring it up a lot. Example:
In January, my E6300 idled @ 40C.
Now, it idles @45C.
Ambient temp change was about 3C. (Load Temps are about the same)
Try putting a fan on it, that's what I did with my HR-03 (passive was 50/75)(active is 45/55)
 
Good luck!

well, you guys were right... i rigged up an old 60 mm fan to a metal back bracket in the slot right below the Accelero S1 + 8800GT and temps went from 80 degree full load temp in BF2 before to 49, over 30 degrees drop from just a little air being pulled by an old 60 mm fan.
 
i think i will get the turbo kit because this tiny fany is really loud
 
idling right now at 43