3080 compatibility

Salman96 · September 3, 2020

Do you think I can get away with a EVGA 650W Gold for the 3080. Currently using a B550M Mortar with a 3700x.

Also I'm using the define mini c with a front radiator and I'm not too sure how well the oem gpu is gonna fit. Technically it fits.

Fasauceome · September 3, 2020

looks as though you have plenty of space. size of the 3080 is listed as 11.2 inches.

Lord Bloobus · September 3, 2020

Nvidia is recommending a 750 for the 3080 based off you running an Intel 10900 for a CPU, which is about 2x the TDP of your current CPU. As long as you're not OC'ing either CPU or GPU or have a crazy elaborate storage solution, you should be in a very fine groove with a gold rated 650W PSU.

Quick maths, 65w + 330w + 10w (AIO) + 35 (mobo) + 25 (Misc draw) = 465w ----- 650 x 0.9 (estimated max efficiency under load) = 585 - 465 = 120 headroom.

As far as I understand, these should be fairly representative of overall draw figures. so while I would recommend you go up 100w to abide the Nvidia recommendation, you should be just fine with your 650, so long as you don't OC or add lots of shiny bits. I probably overlooked some more misc. power draw, so you'll probably be deeper into total draw than my figure.

Plop your specs into a power calculator for more exact results. https://outervision.com/power-supply-calculator.