New PSU Made PC Absolutely Silent?

SquirrelMadness · 26 May 2024 at 16:16

I had a 2014 Super Flower PSU in my new PC build (AMD 7950x, Liquid Freezer 2). I just installed a Corsair RMX 1000w Shift (cables out the side) and when I powered it on was blown away by how quiet the PC runs.

Is this normal? All components unchanged, BIOS unchanged, fans unchanged. Sound level very obviously much lower. Just PSU different.

Seems weird?

SquirrelMadness · 29 May 2024 at 20:20

Old superflower was 1200w if it makes a diff. It almost looks like the RMx quietened the non-PSU related stuff (PC fans). Maybe it was just the actual PSU fan itself.

SquirrelMadness · 29 May 2024 at 20:22

Oh, forgot to mention, the top 2 fans on my Fractal North case are not moving at all during idol... which I don't think was the case with old PSU.

SquirrelMadness · 29 May 2024 at 20:32

Fans are connected to MB. There is no controller. Only connection I added to MB was the 60v USB charging the Crosshair Hero offers via an additional PCIe power connector.

I changed my fan profiles a couple weeks before the PSU change... but they were never set to "off" across the chart.