Intel Core 2 Duo E4400

The Intel Core 2 Duo E4400 packs 2 cores and 4 threads. Clocks span 2GHz base to 2GHz boost. It drops into the LGA775 socket with a 65W TDP — about 32.5W per core. Confirm motherboard socket compatibility before anything else, then size the cooler to the TDP.

Drop it into the PlanMyPC builder to check compatibility with the rest of your parts and compare current processor prices across retailers. Warranty coverage follows Intel's standard policy — confirm regional terms on the listing. Every published spec is tabulated below, and compatibility against your current part list is checked automatically. If this processor is not quite the right fit, the category page lists close alternatives at similar prices for a quick side-by-side comparison.