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I read on a website not so long ago that retail are better for overclocking i dont know how true this is im sure someone on here knows. But since i read that i woul stick to retail, plus the warranty side of things for the extra few £'s is worth it imo.
... The extended warranties are usually bad value.
I was in Argos once. An elderly lady was in front of me; she bought a £4.99 wall clock. Argos are keen to upsell warranties for everything now and badgered the elderly lady into purchasing an extended three year warranty.

