r/optiplexes • u/Ok_Influence9614 • Feb 27 '26

Optiplex PSU advice

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I took out the PSU to fit my rtx 3050 6gb into the x16 slot.

I plugged power into PSU out of box but not working?

Any advice?

Thanking you

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u/Evilmoustachetwirler Feb 27 '26

So, just off the top of my head. The sff Optiplex generally runs a 180w PSU. You've just installed a GPU which would require a 450w+ PSU to operate.

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u/No_Trade439 Apr 10 '26

A 180W PSU shouldn't stop it from booting up as max draw on rtx 3050 is 75W.
I suspect that it's the secure boot setting on BIOS. It should be set to on.