New PSU for RTX 3080

nlel1975 · 11 Oct 2020 at 18:29

So I'm planning to get an RTX 3080 when they are available but my PSU is an old Antec BP550 Plus from 2010. It has 1x 8pin and 1x 6pin connectors for graphics card and I'm currently using both to power my Radeon RX580.

Graphics card needs 2x 8pin but you can get away with using 1x 8pin and 1x 6pin in the other 8pin socket.

I hear the new 3080 need a 12pin connector and you'll likely get a 2x 8pin to 1x 12pin connector with the new graphics card.

Question is will I get away with using 1x 8pin and 1x 6pin in the 2x 8pin to 1x 12pin connector and if not what is a good PSU I can upgrade too, I'd preferably want one with the 12pin connector as standard.

nlel1975 · 12 Oct 2020 at 12:45

I have a Ryzen 5 2600, with 32GB of RAM (two 16GB sticks). A 1.8TB NVMe drive, an 8TB HDD, a 256GB SSD and a 1TB HDD. Currently running a Radeon RX580 graphics card. Nothing is overclocked.

nlel1975 · 13 Oct 2020 at 12:52

Anything coming out with a 12 pin graphics connector as standard?

nlel1975 · 9 Feb 2021 at 13:10

I've been donated a Thermaltake Toughpower XT GOLD 1275W PSU

My cousin gave my brother two of these and he gave one to me knowing I'll need a more powerful PSU for the 6800 XT or RTX 3080. Much better than my current Antec Basiq 550W.

nlel1975 · 10 Feb 2021 at 13:11

It’s got 1x 24 pin motherboard power plug, 2x 8 pin CPU power plugs, 6x 8 pin graphics card cables but I only have 5 of them and 2x cables each with 4 SATA power and one molex power.

The PSU was released in 2012 from what I can gather, my current PSU is from 2010. I’ve never run more than one graphics card in any of my systems so won’t miss the missing cable.

nlel1975 · 10 Feb 2021 at 16:42

Just spent the last few hours trying to install this PSU... So I got it mostly installed so just checked it powered on - it did. So I put it all back together and then it wouldn’t power on. So I checked the power switch cable hadn’t come out and then removed the power of everything and still no luck.

So I connected my old PSU and it didn’t power on with that either, so then I thought maybe it’s the fuse in the plug so I used a different power cable and voila it powered on. So looks like the fuse had blown, lucky I had a spare cable.

Do these high wattage PSU need high amp fuses, I wasn’t given the power cable that originally came from the PSU my cousin kept it, I’m starting to see why.

nlel1975 · 11 Feb 2021 at 16:13

I’m quite happy with this Thermaltake XT Gold 1275W I’ve been donated. It may date back to 2012 but still holds its own against other more modern PSUs. Can’t believe how expensive PSUs are these days.

In fact my previous Antec Basiq 550W from 2010 was still holding its own with my Radeon RX 580 Ryzen 5 2600 system. Only needed a better PSU for the RX 6800 XT or RTX 3080.

nlel1975 · 23 Apr 2021 at 17:18

Well the Thermaltake XT Gold 1275W I was donated didn’t work out. After about 45 minutes of power on, it always started making squeaking sounds and now the PC freezes. I’ve kept it in because I couldn’t be bothered to put the old Antec back in and haven’t needed to use the machine that much.

So I’ve ordered a EVGA 750 BQ, 80+ BRONZE 750W for £ 58.32 ex VAT. Specs here...
https://www.evga.com/products/Specs/PSU.aspx?pn=9b847cc8-dbf8-421c-aebb-45ef91000953

It’ll be a step up from my Antec Basiq 550W and should be able to run a 6800XT just fine as I’m not getting a RTX 3080 anymore.

nlel1975 · 3 May 2021 at 14:26

I see some graphics cards need 3x PCIe power cables now. My old Antec only had x2 so well worth the upgrade if I didn’t know it already.

Seen one of these PSUs used on eBay missing most of its modular cables and it sold for £ 49, I paid £ 58.32 ex VAT for mine brand new!