Pentium 4 531 (3.00GHz stock)...how hard can I OC?

Oh, well that really depends on what cooler you have, what about your motherboard? I think the very max would be 4.0GHZ. But if you are not using a good cooler, I recommend the Arctic Freezer 7. Please list other specs.
 


Derpy test bench (RIP Intel DG9650T):
EPoX EP-5P945-3
Luckily, I got a mobo that can actually OC stuff, poor Intel 😀

What are the specs you looking for?
 
EPoX EP-5P945-3 (supports not rly much: some low tier pentium, celeron, prolly everything at 90μm)
generic 300W PSU (gotta fix my 550W one)
box cooler at 2k RPM (gettin new 4000RPM today)
2 GB RAM DDR2 😀
 


Generic 550W PSU 😀