I have recently purchased a pre-built system (http://www.overclockers.co.uk/showproduct.php?prodid=FS-176-OE) and paid for the overclocking option, just ran a stress test and the CPU never goes above the stock speed of 3.3Ghz, which leads me to believe that they have not overclocked it! 
Can anyone adivse me on a safe overclock that I can change myself.. (i.e multiplier value)
Thanks
SPECS
i5 2500k
Gigabyte Z68X-UD3P-B3
Corsair H60 Cooler
700W power supply

Can anyone adivse me on a safe overclock that I can change myself.. (i.e multiplier value)
Thanks
SPECS
i5 2500k
Gigabyte Z68X-UD3P-B3
Corsair H60 Cooler
700W power supply