I will keep an eye on the Cybenetics website to see if they update any further future SFX-L high wattage psu's. They seem to have some pretty detailed testing and i can post in the other forum for technical advice if needed which i can relay back to here.
ATX3.0 psu’s and coil whine
- Thread starter Jay85
- Start date
It does beg the question though, how much wear and tear does running these psu's at that wattage over a long period of time does to the components? Would hate to see one of these things go bang especially when coupled with expensive components.
Last edited:
Oh man thats bad, any idea what could be causing the gpu not to work? Did you connect using the native 12vpwr cable that comes with the psu or did you try using the adapter?
Maybe a bad cable?
Yup thats exactly how mine sounded like but different games produce different sounds, one would make it sound like a failing hard drive where as the other would make it sound like an electrical pylon buzz!
Very odd, my Loki has the native cable as well but it has sense pins on both ends so i assume it will just work.
Is it the 1000w version you have?
Maybe try using the adapter that does 12vhpwr to 4x8pin pcie?
I have a sneaky feeling it maybe a faulty cable.
I've seen 4090's been powered by 750w psu's so it should be more than fine assuming you have the 1000w version or even the 850w version.
Hmmmm
Wait let me check your psu cables from the official website and i'll see if i can make this work.
Okay you're too limited, not enough cables natively to make it work but i don't understand why the native 12vhpwr cable isn't powering the gpu. Did you plug it in the correct way? I think the cable may only work one way? Worth a check!
With my Loki i got a 12vhpwr native cable and a 12vhpwr to 2x6+2pin pcie cable along with a single 2x6+2pin pcie cable so i could power a 4x8pin pcie gpu if whatever reason the native cable didn't work.
There just isn't enough cables to make yours work unless the PCIe (6+2Pin) has 2 ends on each cable so effectively its a 4x(6+2pin) pcie but according to the specs its not.
With my Loki i got a 12vhpwr native cable and a 12vhpwr to 2x6+2pin pcie cable along with a single 2x6+2pin pcie cable so i could power a 4x8pin pcie gpu if whatever reason the native cable didn't work.
There just isn't enough cables to make yours work unless the PCIe (6+2Pin) has 2 ends on each cable so effectively its a 4x(6+2pin) pcie but according to the specs its not.
If your psu came with this sort of cable then it could work to test out whether its a faulty cable or not.
I also checked the specs of the 850w version and weirdly the amount of cables is the same. I'm guessing its a limitation of the SFX form factor as i think its not a SFX-L unless im looking at the wrong product.
(Stock image of Asus Loki 850w cable package)
I also checked the specs of the 850w version and weirdly the amount of cables is the same. I'm guessing its a limitation of the SFX form factor as i think its not a SFX-L unless im looking at the wrong product.
(Stock image of Asus Loki 850w cable package)
Last edited:
This is a possibility, however with the native 12vhpwr cable it should be able to deliver the full 600w from that one rail. According to the spec sheet the 12v rail should be able to deliver the full 750w at 62.5amps so should be no problem powering the 4090 at bootup.
Shame there's no way to test it, i would return it tbh and think about getting the 1000w version when available as that has the necessary cables and its also SFX-L provided that form factor works in your case.
The SF750 is a great unit, used it for a good part of a year before i upgraded. Only thing i didn't like was the noisy fan during loads like gaming. No coil whine either so that's a plus!
This is one of the reasons why my next build is open frame lol, so i don't need to worry about psu size and gpu sizes anymore!Yeah I used it in my previous ITX builds and only sold it on because I went back to ATX
I've been using the wife's hair dryer to dust all my parts when needed lol! Saves me buying one of those expensive computer duster thingies!
That's proper jank! I like it
I don't but since you mentioned that im tempted to buy one to try and see if it reduces or cancels the noise.
For a 12700k and 3090 (future 4090) what UPS would you recommend?
I think they are the same OEM's, i'm sure i listed that somewhere.
Having used my Loki for a few months now, the whining has definitely dropped and its much less noticeable. Maybe partly due to me getting used to it somewhat too but it's definitely not as loud. The gpu seems to have pretty much gone silent too compared to initially when i first installed the PSU.
The APC 1500va looks good, i am gonna make a buy next month in preparation for the 4090.
Let us know if it has any affect on coil whine.
I've tested with both cables on my 3090 and it made little difference tbh.
My experience now though after a few months of use and "breaking in" the noise has more or less disappeared to the point where i dont hear it unless i put my ear right up against the psu.