EVGA Supernova G3 850 Fan Noise

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zackpinson7

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Mar 17, 2018
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My current system: Corsair 570x RGB with 6 Corsair sp120 fans, 16gb Trident z RGB RAM, Ryzen 7 1800x CPU, Asus ROG Strix GTX 1080 advanced GPU, ekwb revo5 water pump/reservoir combo, Crosshair VII WiFi, Razer black widow v2 tournament edition, Logitech g502 mouse, Asus rog Strix 27 inch curved monitor, Razer nommo speakers, all on the EVGA Supernova G3 850 gold. The PSU fan after a while will ramp up crazy high and it's three loudest thing on my system. After a while it goes back to being inaudible then repeats. I can't seem to figure out if this is from temp or load? I don't think my system is that demanding that it would stress out the PSU that much?
 
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EVGA semi passive power supplies, like yours, don’t use an MCU. Meaning the fan is controlled by the temperature. The load is not factored, though a higher load produces more heat.

What’s likely happening is your fan is on passive mode (not spinning), so heat is built up within the PSU until it triggers the fan. The EVGA G3 850s are loud power supplies, even at low loads. According to Cybenetics When the 130mm fan starts, it spins past 1600RPM (37.5dBA

Try turning off ECO mode. Otherwise you may want a quieter power supply.
Your system would be drawing around 300w at load, and under 90w at idle.
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Rexper

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Apr 12, 2017
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EVGA semi passive power supplies, like yours, don’t use an MCU. Meaning the fan is controlled by the temperature. The load is not factored, though a higher load produces more heat.

What’s likely happening is your fan is on passive mode (not spinning), so heat is built up within the PSU until it triggers the fan. The EVGA G3 850s are loud power supplies, even at low loads. According to Cybenetics When the 130mm fan starts, it spins past 1600RPM (37.5dBA

Try turning off ECO mode. Otherwise you may want a quieter power supply.
Your system would be drawing around 300w at load, and under 90w at idle.
 
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Solution
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zackpinson7

Prominent
Mar 17, 2018
9
0
510


You are correct sir! At some point I must have fat fingered the ECO switch as I NEVER use it. Probably when I was taking my PSU out and in for the water cooling loop pre test. Thanks for your help!
 
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