I know I'm a bit late to the party...
Just starting to OC my new X2 3800 Windsor and have a few questions.
1.) What is the max temp I should be looking at? I'm using stock cooling (which I'll be sticking with) and so far it's topping out at 51C at 2.2GHz and 1.35v.
55ºC on full load is what I'd call max. If you want to get the temps down, try an aftermarket cooler with some AS5 paste.
2.) I ran 2 instances of Prime overnight at 2.2GHz and came in this morning to find the machine had re-booted itself. I've just tried upping the core and RAM voltages a notch and it's passed 1 hour Prime so far. Were voltages the likely culprit - or did the CPU overheat?
Possibly. It's hard to say what the culprit could be.
3.) I have a couple of other voltages to mess with in my BIOS - HT and chipset I think. Do I need to mess with these at all?
There's no harm in possibly bumping these voltages up by one setting. (i.e. if they were 1.4v, then try 1.5v) They could help stability but things like Chipset Voltage played a bigger role in stability on old NF2 chipset boards.
I know there are probably answers to these, but there's a lot to wade through here
X2 3800 Windsor, Biostar NF4U-AM2G mobo, G.Skill 2GB DDR2-800 5-5-5-15, X-Clio Stablepower 460W.
Thanks guys.