Restored Lenovo ThinkCentre M58P Tower Desktop PC with Intel Core 2 Duo E8400 Processor, 8GB Memory, 1TB Hard Drive and Windows 10 Pro (Monitor Not Included) (Refurbished) - Walmart.com
Refurbished: Dell OptiPlex 780 USFF Intel Core 2 Duo E8400 3.00GHz 4GB RAM 250GB HDD Windows 10Pro - Newegg.com
Restored HP Compaq Business SFF Desktop Computer DC 7900 Intel Core 2 Duo E8400 Processor 4GB RAM 1TB HDD Wi-Fi DVD keyboard & Mouse 19" LCD Monitor- Windows 10 PC (Refurbished) - Walmart.com
How can I overclock my Intel Core 2 Duo E8400 with OEM? | Overclock.net