PSU fan control problem?

[RudiSZT3]

At first, sorry for my bad english. I've just bought an RM650x PSU. When I turn the PC on, PSU fan is spinning, so the fan itself works. After a few seconds the fan stops of course. But if I stress my computer hard, PSU fan doesn't spin. Even if I run Prime95 ver.27.9 and Furmark with extreme burning mode at the same time, or play demanding games, PSU fan still doesn't spin at all. My rig is: Asus Sabertooth Z170S, i7 6700K, MSI GTX 1070 Gaming X, 2 DDR4 modules, 2 SSDs, 1 HDD, 1 PCIe x1 sound card, 6 case fans, Cooler Master CM690 good airflow case (but in a relatively narrow space). Ambient temp in my room is about 19°C. I think my rig should use about 350-400 watts on full load. I worry about the PSU’s fan control system and about overheating or doing some damage. By the way, I installed the PSU in the bottom of the case but with the fan facing up.

 

[FreedomEclipse]

Actually I said send it back but a quick look at a few reviews seems to show that the fan idles until the powersupply gets over 300w. My suggestion is to do some gaming

 

[RudiSZT3]

Actually I said send it back but a quick look at a few reviews seems to show that the fan idles until the powersupply gets over 300w. My suggestion is to do some gaming

I did as I wrote, but no fan spinning. Though I don't have a power meter to measure the accurate wattage.

 

[FreedomEclipse]

See if you can borrow a more power hungry graphics card for testing or just speak to your retailer and see if they are willing to swap it for another

 

[peche]

My rig is: Asus Sabertooth Z170S, i7 6700K, MSI GTX 1070 Gaming X, 2 DDR4 modules, 2 SSDs, 1 HDD, 1 PCIe x1 sound card, 6 case fans, Cooler Master CM690 good airflow case (but in a relatively narrow space).

the rig listed in specs should consume like 400W and should be able to start the fan spinngin since the power need exceeds 300w, so the psu might be defective, try to swap and test, and also check if Bios has nothing to do with it, check all fan values,

Regards,

 

[Vario]

You could wire the fan so it always spins by removing the PWM wire from it. Be careful if you open the power supply up, they can store a charge. You might have to figure out which wire is the PWM wire, usually google can help with that. Then you could push the one PWM lead wire out of the fan plug with a pin and bundle it with a zip tie so it isn't plugged to anything, that way you can reverse the mod if you need to.

Your PC might be really loud.

 

[Mussels]

you have power efficient hardware - you're just running under 300W, so the fan doesnt need to spin up.

I get the same thing with my hardware when only running a single GPU - you've just over-estimated your power usage.

 

[RudiSZT3]

Thank you all for the answers!

I've tested it with a temporary 2 way GTX 1070 SLI system, and the fan spinned up, so everything is ok.
By the way my rig with 1 GTX 1070 and i7 6700K consumes 315W max, so it doesn't make the fan spinning.
Very good PSU!