Intel Core 2 Extreme QX9650

The Intel Core 2 Extreme QX9650 offers 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. Intel backs the product through its standard warranty channels; check the listing for region-specific terms. Scroll down for the complete spec table; the builder's compatibility checker will warn you about any conflicts with components you have already picked.