PSU Suggestions

[neil_1821]

I'm currently building a new PC and I need a PSU, but I'm not sure where to even begin with all the different makes and models, what's good, what to avoid. Can someone suggest a good PSU for the following setup, please?

Asus AMD ROG STRIX B650E-E Gaming WIFI AM5 DDR5 ATX Gaming Motherboard
Corsair Vengeance 32GB DDR5 6000MHz
Kingston Fury Renegade 2TB M.2 Internal SSD
AMD Ryzen 7 7800X3D, AM5, Zen 4, 8 Core, 16 Thread, 4.2GHz, 5.0GHz Turbo, 96MB Cache, PCIe 5.0, 120W TDP
PowerColor Radeon RX 7900XTX Red Devil OC
Thermalright Frozen Prism 360 Black ARGB
Antec C3 ARGB Black
EZDIY-FAB PSU Cable Extension Sleeved Cable

 

[tamzzy]

all my go-to 850w PSUs are OOS at present lol

Phanteks AMP GH 850W 80PLUS Gold ATX Power Supply Modular - Black

Order Phanteks AMP GH 850W 80PLUS Gold ATX Power Supply Modular - Black now online and benefit from fast delivery.

www.overclockers.co.uk

MSI MPG A850G PCIE5 UK PSU 850W 80 Plus Gold Modular Power Supply

Order MSI MPG A850G PCIE5 UK PSU 850W 80 Plus Gold Modular Power Supply now online and benefit from fast delivery.

www.overclockers.co.uk

be quiet! Pure Power 12 M 850W ATX 3.0 80 Plus Gold Power Supply

Order be quiet! Pure Power 12 M 850W ATX 3.0 80 Plus Gold Power Supply now online and benefit from fast delivery.

www.overclockers.co.uk

these are in stock

Phanteks AMP GH 850W 80PLUS Gold ATX Power Supply Modular - White

Order Phanteks AMP GH 850W 80PLUS Gold ATX Power Supply Modular - White now online and benefit from fast delivery.

www.overclockers.co.uk

(an extra tenner over the black version for white paint)

Seasonic Focus GX-850 ATX 3.1 850W 80 Gold Modular Power Supply

Order Seasonic Focus GX-850 ATX 3.1 850W 80 Gold Modular Power Supply now online and benefit from fast delivery.

www.overclockers.co.uk

you could drop down to a 750w PSU if you wanted to (I wouldn't recommend though, because the 7900XTX spikes are crazy - up to 455w transients)

Phanteks AMP GH 750W 80PLUS Gold ATX Power Supply Modular - Black

Order Phanteks AMP GH 750W 80PLUS Gold ATX Power Supply Modular - Black now online and benefit from fast delivery.

www.overclockers.co.uk

(oos but white version in stock for an extra tenner)

Phanteks AMP GH 750W 80PLUS Gold ATX Power Supply Modular - White

Order Phanteks AMP GH 750W 80PLUS Gold ATX Power Supply Modular - White now online and benefit from fast delivery.

www.overclockers.co.uk

or this

Asus TUF Gaming 750W 80 Plus Gold Power Supply

Order Asus TUF Gaming 750W 80 Plus Gold Power Supply now online and benefit from fast delivery.

www.overclockers.co.uk

 

[MissChief]

I remember the days when it was possible to buy a good quality PSU for around £1 per 10W. Now it feels like it's nearly double that.

 

[tamzzy]

I remember the days when it was possible to buy a good quality PSU for around £1 per 10W. Now it feels like it's nearly double that.

prep the lube!
all companies using "cost of living crisis" to jack up prices
they are the cause of the "cost of living crisis" imo

but...these are high-spec components we're talking about #firstworldproblems lol

 

[tamzzy]

with what's available at ocuk, i'd actually get this (note i've not looked at other etailers...that's your job )

Phanteks AMP GH 1000W 80PLUS Platinum ATX Power Supply Modular - White

Order Phanteks AMP GH 1000W 80PLUS Platinum ATX Power Supply Modular - White now online and benefit from fast delivery.

www.overclockers.co.uk

same price as the 850w seasonic, but a 1kw psu instead

 

[neil_1821]

with what's available at ocuk, i'd actually get this (note i've not looked at other etailers...that's your job )

Phanteks AMP GH 1000W 80PLUS Platinum ATX Power Supply Modular - White

Order Phanteks AMP GH 1000W 80PLUS Platinum ATX Power Supply Modular - White now online and benefit from fast delivery.

www.overclockers.co.uk

same price as the 850w seasonic, but a 1kw psu instead

I’m sensing you have a preferred colour! I’ve done some of the build but I’m hating all the RGB connectors. Why did I feel like they were necessary.

I’ll have browse through those PSU’s but I’m at the stage where I’d happily pay someone to build it now, cable ties everywhere.

 

[tamzzy]

I’m sensing you have a preferred colour!

haha yes i do lol, most of my cases have been white

but the more important reason is because the white is in stock. i'd have opted for the £10 cheaper black version if it wasn't OOS

 

[tamzzy]

I’ll have browse through those PSU’s but I’m at the stage where I’d happily pay someone to build it now, cable ties everywhere.

cable manage right at the end

 

[Tetras]

but I'm not sure where to even begin with all the different makes and models, what's good, what to avoid.

A general of thumb is that a gold PSU with a 10 year warranty is likely to be decent, but do check reviews on somewhere like THG, hwbusters or anandtech.

There are a few tier lists on the interwebs, but unfortunately they seem to be lacking a lot of the newer models.

PowerColor Radeon RX 7900XTX Red Devil OC

If you'd like 3x independent PCIE cables for your card, keep in mind that many ATX 3.x PSUs struggle to accommodate this and 2x EPS12v and may expect you to use an adapter on the 12VHPWR. Using an adapter is something I'd want to avoid.

These are both 1000 watts, platinum, but the second one only has a 8 year warranty.

My basket at OcUK:

• 1 x Antec HCG 1000 Pro Platinum 1000W ATX3.1 Full modular Power Supply (SKU: POW-ATC-02746) = £179.99
• 1 x Phanteks AMP GH 1000W 80PLUS Platinum ATX Power Supply Modular - Black (SKU: POW-PHK-02521) = £128.99

Total: £316.97 (includes delivery: £7.99)​

 

[neil_1821]

A general of thumb is that a gold PSU with a 10 year warranty is likely to be decent, but do check reviews on somewhere like THG, hwbusters or anandtech.

There are a few tier lists on the interwebs, but unfortunately they seem to be lacking a lot of the newer models.


If you'd like 3x independent PCIE cables for your card, keep in mind that many ATX 3.x PSUs struggle to accommodate this and 2x EPS12v and may expect you to use an adapter on the 12VHPWR. Using an adapter is something I'd want to avoid.

These are both 1000 watts, platinum, but the second one only has a 8 year warranty.

My basket at OcUK:

• 1 x Antec HCG 1000 Pro Platinum 1000W ATX3.1 Full modular Power Supply (SKU: POW-ATC-02746) = £179.99
• 1 x Phanteks AMP GH 1000W 80PLUS Platinum ATX Power Supply Modular - Black (SKU: POW-PHK-02521) = £128.99

Total: £316.97 (includes delivery: £7.99)​

I decided on the 850W MSI MPG A850G, Fully Modular, 80PLUS Gold, Single Rail, PCIe 5.0, 70.8A, 135mm Fan, ATX 3.0 PSU 80QT0
Have to admit it threw me a little on only having 2 PCIE plug in's but it doesn't seem too bad, just having to install windows and install everything new as there's virtually no room for hard drives! Trying to cable manage but there's very limited space behind to organise everything. Cable management has never been my strong suit

 

[tamzzy]

Have to admit it threw me a little on only having 2 PCIE plug in's but it doesn't seem too bad

whilst that's correct, it isn't really so. this psu essentially has 4 pcie 8-pin slots, as the 12vHPWR functions as 2 extra PCIE 8-pins (it comes with a dedicated cable that allows this function).
so, if your GPU has 3x 8-pins: you'd be using the 12VHPWR slot (2x 8-pin) and one of the dedicated 8-pin slots

see: https://www.msi.com/Power-Supply/MPG-A850G-PCIE5
somewhere in the middle of the page: "GPU SUPPORT FOR ALL"

 

[neil_1821]

Ah I didn’t realise the 12vHPWR also functioned as PCIE, I’ll get that swapped over. So with the 12vHPWR I can use that to power 2 of the slots and then use 1 dedicated for the 3rd slot?

 

[hornetstinger]

Ah I didn’t realise the 12vHPWR also functioned as PCIE, I’ll get that swapped over. I either need to remove the PSU or try and plug it in while it’s in place, there’s not a lot of room at the back

Really confusing you'd think a PSU is pretty much standard, but changing even psu now different standards connections

 

[neil_1821]

Really confusing you'd think a PSU is pretty much standard, but changing even psu now different standards connections

Yes that’s the first time I’ve seen a 12vHPWR connector and didn’t realise that could be used to power 2 of the slots on the GPU, I have a spare PCIE slot now. I wasn’t overly comfortable using one PCIE for 2 slots on the GPU, amazing what you learn here.

I definitely owe @tamzzy a beer or two

 

[hornetstinger]

So is best option is whenever I need a new PSU make sure it meets a specific ATX format? ie 3.1?

 

[tamzzy]

I definitely owe @tamzzy a beer or two

i wouldn't have recommended it otherwise

3.1?

3.0 or 3.1 doesn't really matter. the main change from 3.0 to 3.1 is actually the 12vhpwr sensing connector
but in other respects, a 3.0 compliant psu is actually better because they downgraded several requirements in the 3.0 spec, to "preferable" in the 3.1 spec
(ie doesn't have to meet these requirements in the 3.1 spec, whereas they had to, in the 3.0 spec)
whereas a 3.1 12vhpwr cable will fit a 3.0 psu no issues

either way, for a reasonably high-end build with adequate budget, i cannot see why anyone would not get a atx 3.0/3.1 psu

 

[Tetras]

Ah I didn’t realise the 12vHPWR also functioned as PCIE

Usually when someone says "PCIE" (in reference to PSU cables) they mean the old 8-pins, whereas the nvidia-biased 12/16 pin is called the 12VHPWR cable (or the updated: 12v2x6). AMD may also use this connector in future.

 

[hornetstinger]

Usually when someone says "PCIE" (in reference to PSU cables) they mean the old 8-pins, whereas the nvidia-biased 12/16 pin is called the 12VHPWR cable (or the updated: 12v2x6). AMD may also use this connector in future.

It's confusing why everything is called PCI-E

PCI-E expansion slots
PCI-E in internal lanes of CPU
PCI-E power feed
PCI-E NVME

also PCI-E NVME

And probably a couple more

 

[Tetras]

It's confusing why everything is called PCI-E

proper crappy innit

 

[Apex]

So is best option is whenever I need a new PSU make sure it meets a specific ATX format? ie 3.1?

By the time you need a new PSU, there will have been 3-4 standards introduced...as far as anyone can know 3.1 is your best bet if you're buying now, looking forward into an unknowable future!