Like Intel s Sandy Bridge, AMD s new Bulldozer processors are fabricated on a 32nm process. This means they use less power and generate less heat than the older Phenom II CPUs, which were based on a 45nm process. Less power and less heat generally means better overclocking, and the FX-8150 doesn t disappoint: I was able to reach a stable 4.8GHz on all eight cores under extended stress testing, running the CPU at 1.4V and using a Thermalright Silver Arrow air cooler. This is 200MH higher than AMD suggested was feasible for all cores "on air" in their reviewer s guide, so I feel pretty good about it! With the giant Thermalright Silver Arrow cooler, processor temperatures under load maxed out at 59 degrees at an ambient temperature of 24 degrees