Intel Core 2 Duo E4400

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

Use the PlanMyPC system builder to verify it works alongside your other components and to watch live retailer pricing. Intel backs the product through its standard warranty channels; check the listing for region-specific terms. Every published spec is tabulated below, and compatibility against your current part list is checked automatically. The category page surfaces comparable models near the same price, which makes shortlisting against this processor straightforward.