ATX3.0 psu’s and coil whine

JollyJamma said:
Can confirm my 3080 FE screams like a banshee.
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Which psu have you paired it with?

The only “fix” that worked for me was undervolting. At 937mv @1950mhz it draws under 300w on my 3090 which basically kills the coil whine.

I had a play with my cpu overclock as well which also seemed to affect it but only marginally.
 
Jay85 said:
Which psu have you paired it with?

The only “fix” that worked for me was undervolting. At 937mv @1950mhz it draws under 300w on my 3090 which basically kills the coil whine.

I had a play with my cpu overclock as well which also seemed to affect it but only marginally.
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I have a SF750 psu.

I’m used to it by now. It also helps that my chassis is no longer on my desk.
 
JollyJamma said:
I have a SF750 psu.

I’m used to it by now. It also helps that my chassis is no longer on my desk.
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Tempted to do this, maybe build a shelf and wall mount it at least 4 or 5 feet away from me. Hoping over time it will quieten down.

Weirdly i had the SF750 before this Loki unit and it had zero coil whine. The only thing that really annoyed me was the fan when under load, it was super noisy.
 
Jay85 said:
Tempted to do this, maybe build a shelf and wall mount it at least 4 or 5 feet away from me. Hoping over time it will quieten down.

Weirdly i had the SF750 before this Loki unit and it had zero coil whine. The only thing that really annoyed me was the fan when under load, it was super noisy.
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The SF750 PSU is great, it’s the 3080 FE that is the issue.

Most PC components make a little bit of noise so having it further away could solve all of the issues.

I know people who put their PC in the loft above them and run cables down to their office/PC room with a power on/off switch also run to the office.

It’s a bit tricky to do but it means that the mess is out of sight and the sound doesn’t affect you.

It has the added benefit of if someone breaks into your house, they aren’t likely to have the time to go into the loft to steal the PC.
 
I have a 4090 FE that has no coil whine that I can hear. The fans on the other hand.....

I'm going to order the Thermaltake SFX ATX 3 PSU so will update this thread to let you know if there's any coil whine from that.
 
sparkymark75 said:
I have a 4090 FE that has no coil whine that I can hear. The fans on the other hand.....

I'm going to order the Thermaltake SFX ATX 3 PSU so will update this thread to let you know if there's any coil whine from that.
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Have a read of this thread i created as well. There's abit more info in there regarding some of the other higher power SFX and SFX-L psu's. Some to defo avoid!

Edit: Seen a few complaints about the fans, is it really that bad?

www.overclock.net

ATX 3.0 Psu’s and coil whine?

www.overclock.net www.overclock.net
 
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JollyJamma said:
The SF750 PSU is great, it’s the 3080 FE that is the issue.

Most PC components make a little bit of noise so having it further away could solve all of the issues.

I know people who put their PC in the loft above them and run cables down to their office/PC room with a power on/off switch also run to the office.

It’s a bit tricky to do but it means that the mess is out of sight and the sound doesn’t affect you.

It has the added benefit of if someone breaks into your house, they aren’t likely to have the time to go into the loft to steal the PC.
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Right now i can live with it with the undervolt but if and when i get a 4090 and its a lot worse then i may very well need to consider this!

I mean i like looking at my pc, seeing all the nice components i've invested in etc and easy access to fix and change things when i want to within arms reach but i cannot deal with coil whine right now.
 
sparkymark75 said:
I have a 4090 FE that has no coil whine that I can hear. The fans on the other hand.....

I'm going to order the Thermaltake SFX ATX 3 PSU so will update this thread to let you know if there's any coil whine from that.
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Just know that the quality of the electricity being supplied to your house can also cause coil whine.

If it's particularly bad, you can get coil whine with even the quietest GPU or PSU.
 
Jay85 said:
Right now i can live with it with the undervolt but if and when i get a 4090 and its a lot worse then i may very well need to consider this!

I mean i like looking at my pc, seeing all the nice components i've invested in etc and easy access to fix and change things when i want to within arms reach but i cannot deal with coil whine right now.
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What's the power draw of a 4080 in games? The SF750 can deliver 850 970 watts if needed (I'll confirm if that's momentary or continuous draw).

Edit: review says this. Is that continuous?
The unit can deliver almost 970W of power, before it shuts down because of the over power protection's triggering. Those are lots of Watts, but OPP is still set below 130% of the unit's max-power-output so it is ideally configured. The OCP on all rails but 3.3V is optimally set as well, since it is close or below 130%. Finally, the power ok signal is accurate, but it is lower than 16ms which is what the ATX spec requires.
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www.tomshardware.com

Corsair SF750 PSU Review: A Tiny Power Factory

The SF750 is the strongest SFX power supply that money can buy today, however it is among the most expensive as well. So is it worth spending so much to get it?
www.tomshardware.com www.tomshardware.com
 
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JollyJamma said:
What's the power draw of a 4080 in games? The SF750 can deliver 850 970 watts if needed (I'll confirm if that's momentary or continuous draw).

Edit: review says this. Is that continuous?


www.tomshardware.com

Corsair SF750 PSU Review: A Tiny Power Factory

The SF750 is the strongest SFX power supply that money can buy today, however it is among the most expensive as well. So is it worth spending so much to get it?
www.tomshardware.com www.tomshardware.com
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That is a lot of power before it shuts down, 970w on a 750w rated psu is pretty insane. Is it really that overspecced? I mean i ran one for a good part of 6 months and it was solid but the fan noise drove me crazy as well lol.

If they made one in the same spec level, 850w and a SFX-L form factor with a 120mm fan i would be all over it! I just need one to exist now....
 
sparkymark75 said:
I've ordered the 750w Thermaltake ATX3 SFX PSU. I would have preferred the 850w but the 750w should be enough as I plan to undervolt the 4090 and 13700k to keep temps in check.
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Let me know how you get on with it. Like you, probably upgraded so we can take advantage of the atx3.0 12vhpwr cable instead of using an adapter just seemed like the better thing to do.

I have a watt meter that i got from the old Maplin days where you can plug the meter into the wall and the power cable into the meter, it can tell me wattage, volts and amperage etc. On gaming load right now i draw around 560w with a small overclock on the cpu and a stock 3090. An undervolted 3090 at around 937mv will draw around 300w or less so draw from the socket will be around 500-510w plus efficiency losses should be well under 500w at the psu. I was more concerned with the 4090 being able to draw 600w which could easily take me over that 750w rated psu but like you say with an undervolt it should more than fine.
 
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Jay85 said:
So straight to the point, i’ve tried 2 SFX-L Asus Loki PSU’s so far and both exhibited Electrical buzzing and Coil Whine, quite extreme as well to the point of being irritating. From what i know these are the Seasonic OEM’s Edit: spoke to someone else and i am now told that the 850w variants are made by Great wall! It would be great if someone could confirm this.
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Yes ASUS ROG LOKI 750W and 850W PSU OEM manufacturer is Great Wall.


ASUS ROG LOKI 1000W PSU OEM manufacturer is CWT.

 
AthlonXP1800 said:
Yes ASUS ROG LOKI 750W and 850W PSU OEM manufacturer is Great Wall.


ASUS ROG LOKI 1000W PSU OEM manufacturer is CWT.

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sparkymark75 said:
Seems its CWT for the Thermaltake ones. Not sure if they are any good.
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Same i've heard of Great Wall before but never heard of CWT. Doing abit of research now to see what else they make that might be reputable.
 
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sparkymark75 said:
Seems its CWT for the Thermaltake ones. Not sure if they are any good.
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I've tried to do some research and it seems CWT also make their own psu's now as well. I've only found some much older posts regarding quality of them. Mediocre at best but that was a long time ago, maybe things have changed now? Doesn't seem to be a lot of talk about them in general.
 
Jay85 said:
I've tried to do some research and it seems CWT also make their own psu's now as well. I've only found some much older posts regarding quality of them. Mediocre at best but that was a long time ago, maybe things have changed now? Doesn't seem to be a lot of talk about them in general.
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Just realised those reports for the ATX3 Thermaltake PSUs are for the ATX sized versions. So not sure if its CWT that do the SF ones. The ATX ones do seem to have decent performance from what I can gather from reading threads about ripple, etc and the numbers on those reports.
 
Jay85 said:
That is a lot of power before it shuts down, 970w on a 750w rated psu is pretty insane. Is it really that overspecced?
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Whilst not exactly the same, the Seasonic TX700 is supposedly able to do 969W before OPP kicks in. So there's some precedence with regards to PSU's being WAAAAaaaaayyyy overspec'd for the rating they are sold at. I think the typical PSU OPP is set at 10% or a bit more than that? And usually not close to 40%.
 
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