Intel Xeon E5-2690

The Intel Xeon E5-2690 brings 8 cores and 16 threads. 16MB of L3 cache helps in cache-sensitive games and workloads. Clocks span 2.9GHz base to 3.8GHz boost. It drops into the LGA2011 socket with a 135W TDP — about 16.9W per core. Board socket comes first when pairing parts — after that, make sure your cooler's rating covers the chip.

Its $249.95 price tag places it squarely in mid-range territory. 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. Scroll down for the complete spec table; the builder's compatibility checker will warn you about any conflicts with components you have already picked.