Intel CPU's have OC black box
 

A few big retailers and etailers have confirmed that Intel actually can check if you overclocked your CPU. When you burn your CPU Intel asks its retailers and etailers to return the CPU's back and in three to five weeks Intel gets back with the answer to whether the end customer gets a new chip or not.

http://www.fudzilla.com/index.php?op...32&Item id=35

Overclocking = taking risk, don't be a sissy.

Aye. I am all for stopping the RMA / warranty abuse overclockers exploit, because I end up paying for it in some shape, form, or fashion down the road.

Just wait 3 to 5 weeks for the result. Yea sure, that'll catch on over here in belgium.

Good point, you know they could be a fair bit quicker about it if they really wanted to be.