Intel Core i7-5820K

The Intel Core i7-5820K packs 6 cores and 12 threads. It drops into the LGA2011-3 socket with a 140W TDP — about 23.3W per core. 15MB of L3 cache helps in cache-sensitive games and workloads. Clocks span 3.3GHz base to 3.6GHz boost. Match the socket to your motherboard first; cooler TDP rating second.

Expect to pay around $349.99, which lands it among high-end options. Drop it into the PlanMyPC builder to check compatibility with the rest of your parts and compare current processor prices across retailers. 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.