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Restored Dell OptiPlex 780 Windows 10 Desktop PC Tower Core 2 Duo 3.0GHz Processor 4GB RAM 250GB Hard Drive DVD-RW Wi-fi with a 19" Computer (Refurbished) - Walmart.com
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Dell OptiPlex 780 System Guide | Dell India
Refurbished: DELL Desktop PC OptiPlex 780 Core 2 Duo 3.00GHz 4 GB 250GB HDD Windows 10 Pro 64-Bit - Newegg.com
Dell Optiplex 780 Windows 10 Pro Desktop PC Tower Core 2 Duo 3.0GHz Processor 8GB RAM 500GB Hard Drive DVD-RW Wifi with a 22" LCD-Used Computer - Walmart.com
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Solved: Is the Dell Optiplex 780 mt with the Intel Core 2 Quad Q9550 still good in 2020? - Dell Community
Dell Optiplex 780 Windows 10 Pro Tower Computer PC 3.0GHz 8GB 250GB w/19" LCD and Dell Soundbar