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Which Dell Optiplex MT (any model 990, etc.) can I change the graphics card without upgrading the PSU? Which GPUs would work? - Quora
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Dell Optiplex 990 Desktop Computer PC, 3.20 GHz Intel i5 Quad Core Gen 2, 16GB DDR3 RAM, 2TB SATA Hard Drive, Windows 10 Professional 64bit (Renewed) | MacUpdate
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