Core 2 Duo - E8400 shows 2000 MHz in CPU-Z - Team-BHP
Lenovo ThinkCentre M58P Tower Desktop PC with Intel Core 2 Duo E8400 Processor, 4GB Memory, 320GB Hard Drive and Windows 10 Pro (Monitor Not Included) - Walmart.com
Amazon.com: Intel Core Duo E8400 3.00GHz 6MB 1333MHz CPU SLB9J : Electronics