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RE: Inspiron 3668, upgrade PSU (for Graphics card)?

The case size is going to preclude an internal power supply upgrade.  While you can run a 600W power supply, it's going to have to sit outside the case, with the wires running into the case through an open slot bracket -- and that's IF the 1060 card you have will even fit inside the system and function with the limited cooling in the mini desktop case.

Also check the existing supply - most of these newer systems use a proprietary 8-pin connector to the mainboard, for which you'll also need an adapter for the 24-pin standard plug from the power supply you purchase.


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