Intel Core 2 Extreme QX9650

The Intel Core 2 Extreme QX9650 packs 4 cores and 8 threads. Clocks span 3GHz base to 3GHz boost. It drops into the LGA775 socket with a 130W TDP — about 32.5W per core. Board socket comes first when pairing parts — after that, make sure your cooler's rating covers the chip.

At $158.02 it sits in the mid-range processor bracket. PlanMyPC's builder flags compatibility problems automatically and tracks the latest processor deals from multiple stores. Support and warranty service run through Intel, with terms that vary by region. The full specification sheet below breaks out every listed detail, and the compatibility checker flags conflicts with parts already in your build.