AMD Athlon II X3 405e

The AMD Athlon II X3 405e packs 3 cores and 6 threads. It drops into the AM3 socket with a 45W TDP — about 15W per core. Clocks run from 2.3GHz base to 2.3GHz boost. Match the socket to your motherboard first; cooler TDP rating second.

PlanMyPC's builder flags compatibility problems automatically and tracks the latest processor deals from multiple stores. Warranty coverage follows AMD's standard policy — confirm regional terms on the listing. Scroll down for the complete spec table; the builder's compatibility checker will warn you about any conflicts with components you have already picked. 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.