Those supposedly triple and dual core CPUs that got unlocked to quad cores were apparently a way to sell damaged silicon that the remaining cores passed QA so they just disabled the broken core. To meet demand of these product lines perfectly good quad core CPUs got disabled and sold off as dual&#x2F;triple editions. It was the luck of the draw if you got one of those and not a genuinely flawed chip.<p>Now, How much of that is true I don&#x27;t know but that&#x27;s what I remember reading at the time. A friend of mine did succesfully unlock his triple and ran for a long time.