How far can you OC w/a stock fan?

[Themoniter61]

I just finished putting together my first custom rig. I have a Zalman fan goin on my BFG Nvidia 7900gt OC and the stock fan on my AMD 64 x2 4200. What would be the hottest i ever want this processor to run at and how far do you think i could OC w/o changing the fan. I have a Gigabyte S5 Mobo.

 

[monkey999]

imo i say not over 55 but the stock fan is pre good i got my opty 165 from 1800mhz to 2400mhz with stock not going over 53 and stock voltage but ya dont listen to me