Dell Optiplex 780 - 2GB RAM Intel Core Duo E8400 @ 3GHz No HDD No OS | eBay
Intel DG41TY Motherboard + Core 2 Duo E8400 3GHz CPU + 4GB RAM + HSF I/O Plate - The620Guy.com
Gigabyte GA-G31M-ES2L with Intel Core 2 Duo E8400 3GHz, 4GB DDR2 RAM - Good | eBay
Amazon.com: Lenovo ThinkCentre M58p Desktop - Intel Core 2 Duo E8400 3GHz - 2 GB DDR3 SDRAM - 250 GB - DVD-Writer (DVD-RAM/±R/±RW) - Gigabit Ethernet - Windows 7 Professional - Small
Intel E8400 Socket Lga 775 Cpu Processor Core 2 Duo Dual Core As E8500 E8600 (3.0ghz/ 6m /1333ghz) - Cpus - AliExpress
Restored HP Pro 6000 Tower Desktop PC with Intel Core 2 Duo E8400 Processor, 4GB Memory, 1TB Hard Drive and Windows 10 Pro (Monitor Not Included) (Refurbished) - Walmart.com