Getting back on track.........
Here are my temps with my 920.....
Stock Settings with stock HSF and AS5
Needless to say, I ordered a new heatsink IMMEDIATLY.
Stock Settings with Zalman 9500 w/ generic heat compound
OC to 4Ghz with Zalman 9500 w/ generic heat compound
I used the generic compound with the Zalman as I wanted to benchmark the difference AS5 will make.
My average ambient temp in the room is approx 23c, and I have a mid tower case with 2 80mm intake and 2 80mm exhaust, with a 140mm exhaust on my PSU that pulls right off the rear of the mobo and HSF.
The HSF that Intel ships with the Preslers is obviously trash (although some guy posted on Newegg that his 920 runs at 23c on the stock cooler......I think he's full of it, or his computer is packed in ice.....)...which is suprising, as my old 478 Prescot ran pretty cool in the same case at stock settings with the stock HSF......I don't know what Intel did, but the design isn't that good.
I know everyone recomends the Typhoon, and I know it's a good strong cooler (especially since you can always put a more powerful fan on it), but I am quite happy with my Zalman 9500 as it dropped my temps nicely, and I am sure with some AS5 it will go even lower (also, one of my case fans is probably not that great, so that probably doesn't help)......and the 9500 looks cooler than the Typhoon
BTW - In tests, the ASUS PC Probe read about 5 degrees cooler than the real temp (this was an average over several tests), not sure about PC Probe 2. Not sure how accurate the BIOS temp would be, but with that info you should be able to get a closer idea.....