Dell Optiplex 780 Upgrade Options - Dell Community
Restored Dell Optiplex 780 Small Form Factor Desktop PC with Intel Core 2 Duo Processor, 8GB Memory, 1TB Hard Drive and Windows 10 Pro (Monitor Not Included) (Refurbished) - Walmart.com
Can I upgrade a Dell Optiplex 790 motherboard? If yes, to what motherboard can I upgrade to? - Quora
Supported CPU for Optiplex 780 - Dell Community
Dell Optiplex 780 SFF CPU Upgrade - YouTube
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Solved: Dell Optiplex 780 DT upgrade issue - Dell Community