Need a new PSU

Lord Alibaski · 28 Oct 2022 at 15:33

Finally upgraded my old 1366 socket PC that was inside a Lian Li v2100 plus 11 wanted something smaller and wanted it on my desk.

New PC purchased off a friend so having to use my old GPU at the moment.

AMD 5800x
ASUS ROG STRIX B550-F
16GB RAM
Radeon HD 6670
Lian Li Air Mini Case

At the moment I am using a very old Corsair HX620, I found it quiet when on the floor under the desk but now it's next to me I can hear coil whine coming from it and it's annoying. I don't game but I do a lot of video work, I will be looking at a better card in the next year or so as well. I can't make my mind up on which PSU to buy I know I can buy a low powered one but I'm looking at 850w for a future build.

PSU's I have in mind are (I have a budget of £180)

Phanteks AMP 850W 80 Plus Gold Modular Power Supply

Order Phanteks AMP 850W 80 Plus Gold Modular Power Supply now online and benefit from fast delivery.

www.overclockers.co.uk

Seasonic Focus GX-850 850W 80+ Gold Modular Power Supply

Order Seasonic Focus GX-850 850W 80+ Gold Modular Power Supply now online and benefit from fast delivery.

www.overclockers.co.uk

Have put this in mainly for the 12 year warranty and again it's a seasonic

Seasonic Prime GX-850 850W 80 Plus Gold Modular Power Supply

Order Seasonic Prime GX-850 850W 80 Plus Gold Modular Power Supply now online and benefit from fast delivery.

www.overclockers.co.uk

The 1st 2 are my main choices but would it be worth paying the extra for the prime!

Thanks for any help and advice.

Grimley · 28 Oct 2022 at 18:46

I'd wait for the phanteks to come back into stock. That & the cheaper Seasonic are more or less the same PSU.

Lord Alibaski · 28 Oct 2022 at 19:10

Cheers Grimley, knew it was a Seasonic build that was another reason I had that has a choice as well.

I might wait a bit end of November see if I can get a better deal on it, the pre-order price looks a decent price for it.

Lord Alibaski · 4 Nov 2022 at 17:44

With the Phantec still on pre-order I am still looking for a PSU.

All I want is a PSU with a quiet fan this old HX620 is getting a bit loud.

Grimley · 4 Nov 2022 at 18:04

I suggest this, its equal to the PSU's you suggested:

My basket at OcUK:

1 x Bitfenix Whisper M Series 850W 80 Plus Gold Modular Power Supply (SKU: CA-22D-BX) = £114.95
1 x Kolink AT/ATX "Kettle Plug" 1.2 5A Fuse Meter Mains Cable (SKU: CB-002-KK) = £0.00

Total: £125.45 (includes delivery: £10.50)

Drumroll · 5 Nov 2022 at 00:13

Had beQuiet PSU before which was solid, no coil whine. A 750W was copping very well with a 3090. Only the fan was annoying when the PSU was mounted vertically (O11 case).
Tried two Corsair, Platinum, coil whine.
Now Seasonic. First was a Focus 850W Platinum. No noise at all. No coil whine, silent fan. Changed for a Prime 1000W, no coil whine, but I can hear the fan. Not intrusive, but my whole system is almost silent.

Lord Alibaski · 5 Nov 2022 at 16:34

I've had to take the HX620 out the coil whine and the fan was getting worse, so at the moment I'm using a Seasonic Core GC-650w I got from a member on this forum. I'm happy enough for now no whine but the fan is a bit loud I can live with that for now.

The Seasonic 750 or 850 prime is probably the one I will end up with, the OEM for that Bitfenix PSU is a no go for me I've had CWT PSU's in the past and all have been very poor.

Drumroll · 5 Nov 2022 at 17:49

Was using the Seasonic Focus Platinum before the Prime I’m using now. Both no coil whine, but maybe luck or not, but the Focus I wasn’t able to hear the fan, the Prime I can, but nothing absurd. Also, only if I choose to let it on all the time, but the main reason for a semi passive PSU is to only spin the fans under load.
The fact that my case is at the left of my desk and I didn’t like the looks of the O11 Evo inverted, the PSU intake is pointed at me, maybe that’s the reason I can hear it. But the whole system is almost silent. When the GPU fans kick in, they’re the only thing that I can hear.
There’s other options manufactured by Seasonic too. I found their price fair for what you get.
The only thing I disliked about the focus was the 8pin GPU power cable. They split at the end, making hard to tidy up without a hanging connector loose. The prime doesn’t. A single connector per cable, simply connect and forget.
I didn’t bother with cable extensions or replacement braided cables as I need 3 8pin for my GPU and all replacement kits I found only offer 2. Extension is easier, as you can buy an extra 8pin, but for now, the supplied cables look ok.