Dell Optiplex 745 Small Form Factor Processor Replacement - iFixit Repair Guide
Refurbished: Dell Optiplex 745 Tower - 2.1GHz Intel Core 2 Duo Processor - 2GB Memory - Windows 7 Home Premium - Newegg.com
Refurbished: Dell Optiplex 745 Mini Tower Pentium D Dual Core, 3.4 Ghz, 500 Gb Hard Drive, 4 Gb Ram, Windows 7 Home Premium - Newegg.com
Dell YJ138 - Desktop Motherboard for OptiPlex 745 MDT
Dell OptiPlex 745 Tower Desktop PC with Intel Core 2 Duo E6300 Processor, 4GB Memory, 320GB Hard Drive and Windows 10 Home (Monitor Not Included) - Walmart.com
The Mechanical Philosopher: Using a Dell Optiplex 745 Motherboard in a Dell Dimension 5100 Case.
Vintage Optiplex 745 : r/vintagecomputing
Solved: Dell Optiplex 745 CPU Upgrade - Page 2 - Dell Community