Pick a processor and see the lowest current prices on eBay for working, tested CPUs, with shipping, condition and seller rating side by side. Prices are pulled live, so what you see is what sellers are actually asking this minute.
Live from eBayLive eBay listings, the largest source of used and refurbished processors. Pick a model and it fetches the current lowest-priced listings in real time, updated every few minutes.
Very safe. CPUs have no moving parts and rarely fail. Buy from high-feedback sellers, verify the socket type, and make sure the listing says the processor has been tested and works. eBay's Money Back Guarantee covers you if it doesn't boot.
Usually 30-50% below retail, more if it is an older generation. Older flagships often have the best value because they drop faster in price but still have plenty of performance.
Check your motherboard's manual or specs: modern AMD boards are AM5 (2022+), modern Intel are LGA1700 (2022+). Older boards use AM4 or LGA1150. The eBay listing will state the socket; make sure it matches.