Overclock AMD 4800+ X2?

[Neodude1123201]

How far do you guys reckon i could overclock my AMD 4800+ X2,at the moment its at stock speed (2.5Ghz per core) and has OEM Cooling,Also how good is Zalman's range of Fans and HS's for overclocking?

 

[Luda]

id say with a zalam HSF you oculd get a solid 3.0ghz