Hi guys, just want to get some opinions on whether a used CPU I bought is ok to use or it's too risky to trust it. The CPU in question is an i7-2600k. When it arrived in the mail upon inspection I immediately noticed darker areas on the contact pads on the underside of the CPU. On closer examination it looks like some of the pads are damaged, possibly burnt. I've tried the CPU in a spare board and it seems to work but I did have some lockups in Windows, but I've since updated the bios and so far it seems ok. Please have a look at the pictures. On one I've circled some of the suspect pads. Sorry if the pictures aren't the best. Anyway, I'd be very appreciative to have your opinion on this and if you'd be happy using this CPU in your PC. Thanks Click to view full-sized image! Click to view full-sized image!