Can my PSU power a 5070 Ti?

Samhfx · Sunday at 16:23

I have this Corsair PSU which I believe is 2021. I'm having a rough time understanding what I can and can't do. I took my PSU out and I currently have a single GPU and CPU cable plugged in.

https://www.overclockers.co.uk/corsair-rmx-series-rmx750-750w-80-plus-gold-modular-power-supply-cp-902017-ca-23w-cs.html

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My question is, are these two extra spots for GPU cables also?

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deviation · Sunday at 16:36

Have you got a picture with the model number/serial? I'm pretty sure that, that's a Corsair PSU?

Samhfx · Sunday at 16:39

deviation said:
Have you got a picture with the model number/serial? I'm pretty sure that, that's a Corsair PSU?

Oh sorry forgot to add. Yes it's a Corsair, I was told the first two numbers on SN is the year? It is 21

deviation · Sunday at 16:40

Just the model number if you can but, and anything with the wattage?

There should be some kind of branding like this for example:

Samhfx · Sunday at 16:48

deviation said:
Just the model number if you can but, and anything with the wattage?

There should be some kind of branding like this for example:

I put a link in the original thread of the specific PSU I have. Maybe it was a bad place to put the link https://www.overclockers.co.uk/cors...modular-power-supply-cp-902017-ca-23w-cs.html

Gray2233 · Sunday at 16:51

The RMX750W should be fine, I'd be very surprised if it wasn't.

You can run a 5070ti or 9070XT on a quality 650W tbh, although some models might require an undervolt.

MSI GeForce RTX 5070 Ti Gaming TRIO OC Plus review (Page 5)

We review MSI's GeForce RTX 5070 Ti 16GB Gaming TRIO OC Plus is utilizes the power of Nvidia’s GB203 GPU and boasts 8,960 CUDA cores, delivering rendering some fairly decent performance.

www.guru3d.com

Peak draw of 332W, average of 293W.

Samhfx · Sunday at 17:27

Gray2233 said:
The RMX750W should be fine, I'd be very surprised if it wasn't.

You can run a 5070ti or 9070XT on a quality 650W tbh, although some models might require an undervolt.

MSI GeForce RTX 5070 Ti Gaming TRIO OC Plus review (Page 5)

We review MSI's GeForce RTX 5070 Ti 16GB Gaming TRIO OC Plus is utilizes the power of Nvidia’s GB203 GPU and boasts 8,960 CUDA cores, delivering rendering some fairly decent performance.

www.guru3d.com

Peak draw of 332W, average of 293W.

Yes but the problem I'm facing is the connections. I only have x2 gpu cables afaik. I have one plugged in now which is running my 3070 and I have another in my PSU box. How many do I need to power a 5070 ti?

also, is the two empty spots in this image next to my GPU cable also GPU slots? https://imgur.com/a/zLpWVni (ignore the dust, it's fully clean now)

Gray2233 · Sunday at 17:36

Samhfx said:
Yes but the problem I'm facing is the connections. I only have x2 gpu cables afaik. I have one plugged in now which is running my 3070 and I have another in my PSU box. How many do I need to power a 5070 ti?

also, is the two empty spots in this image next to my GPU cable also GPU slots? https://imgur.com/a/zLpWVni (ignore the dust, it's fully clean now)

You'll get an adapter cable similar to this, you'll plug the two 8 pin cables you have into it and then the other end into the card:

Samhfx · Sunday at 17:37

Gray2233 said:
You'll get an adapter cable similar to this, you'll plug the two 8 pin cables you have into it and then the other end into the card:

so i can just buy this and i don't have anything to worry about? https://www.overclockers.co.uk/cors...e-4-psu-power-cable-cp-8920284-ca-272-cs.html

Tetras · Sunday at 17:38

Samhfx said:
How many do I need to power a 5070 ti?

The adapter included in the box of the 5070 Ti is 3 to 1, I believe. 3x PCIE 8-pin to 1x 16 pin.

If you only have 2x independent PCIE cables, with 2x 8-pin connectors each, that should be enough.

Samhfx said:
also, is the two empty spots in this image next to my GPU cable also GPU slots?

Yes.

Samhfx · Sunday at 17:39

Tetras said:
The adapter included in the box of the 5070 Ti is 3 to 1, I believe. 3x PCIE 8-pin to 1x 16 pin.

If you only have 2x independent PCIE cables, with 2x 8-pin connectors each, that should be enough.

Yes.

Ok thank you. I have 1 cable used for 3070 now and have extra in psu box. so i don't need this after all https://www.overclockers.co.uk/asus...-pci-express-graphics-card-gra-asu-04152.html

thanks a lot for the help on the other messy thread

Tetras · Sunday at 17:46

Samhfx said:
so i don't need this after all

No, you don't need the cable.

In reference to the downsides: the main downside of using the card's box adapter is that it is much messier than the cable Corsair sell, because Corsair's cable goes directly into your PSU's modular panel and then straight to the card.

Samhfx · Sunday at 17:50

Tetras said:
No, you don't need the cable.

In reference to the downsides: the main downside of using the card's box adapter is that it is much messier than the cable Corsair sell, because Corsair's cable goes directly into your PSU's modular panel and then straight to the card.

i don't really care for aesthetics since it's only me who see's it. i'm using the 3070 adapter so i guess it will be similar to what i see now anyway.

Tetras · Sunday at 17:59

Samhfx said:
i'm using the 3070 adapter so i guess it will be similar to what i see now anyway.

Yeah, pretty much. You can always buy the cable after, if you don't like it, or can't arrange it how you want.

pastymuncher · Monday at 10:33

I have replied with this in your other thread:-

You have 4x EPS/PCI-e sockets not two. Those two empty 8 pin sockets to the left are also for them. Sata & Peripheral are the 6 pin sockets. You only have a pair of pci-e cables each with a pair of daisy chained 6+2 pin plugs so you have enough for a triple 8 pin card or adaptor.

One thing I would do is give that psu a good blow through in reverse direction to the usual airflow, so in through the grill and out through the fan opening. If there is that much dust stuck to the fan grill there will be a lot more stuck to internal components which will degrade the psu's cooling performance plus excess dust in psu's have been known to start fires.

Samhfx · Monday at 16:26

Tetras said:
Yeah, pretty much. You can always buy the cable after, if you don't like it, or can't arrange it how you want.

Frustrating problems today. Overclockers support told me the cable would not work. I ended up cancelling the order and buying a new PSU. I then double checked with some people and apparently the cable WILL work. So I cancelled the PSU and ordered cable again...

Why would the guy tell me this? https://imgur.com/a/8eDYRqj

Samhfx · Monday at 16:34

pastymuncher said:
I have replied with this in your other thread:-

Thank you. Can you you explain reverse direction? There was dust on the grill which was difficult to remove at first. Also I purchased this cable again since support apparently gave me wrong info https://www.overclockers.co.uk/cors...e-4-psu-power-cable-cp-8920284-ca-272-cs.html

Tetras · Monday at 18:48

Samhfx said:
Frustrating problems today. Overclockers support told me the cable would not work. I ended up cancelling the order and buying a new PSU. I then double checked with some people and apparently the cable WILL work. So I cancelled the PSU and ordered cable again...

Why would the guy tell me this? https://imgur.com/a/8eDYRqj

I thought you were going to use the card's box adapter and not buy the Corsair cable?

My guess is that the support rep thought it was a bad idea to use a modern card with an old PSU, so didn't want to recommend you buy/use the cable.

Samhfx · Monday at 19:04

Tetras said:
I thought you were going to use the card's box adapter and not buy the Corsair cable?

My guess is that the support rep thought it was a bad idea to use a modern card with an old PSU, so didn't want to recommend you buy/use the cable.

Yeah I just thought buying the cable would just be easier (sounds stupid). I'm nervous but tomorrow I guess I'll find out if it works or not. The cables my PSU have are pigtails, I just wanted to stay away from that. Why would he think a old PSU is bad for modern GPU though? Corsair is apparently quality and I've only used it for 4 years.

pastymuncher · Monday at 19:10

Samhfx said:
Can you you explain reverse direction? There was dust on the grill which was difficult to remove at first.

I did, in through the grill and out through the fan. The fan sucks air in and pushes it out of the grill at the rear where the mains lead plugs in. It's the same way you would blow through any kind of radiator as the fan pushes dust/dirt one way and it gets stuck on the fins or in your case the psu's internal components. You then blow air through from the opposite direction of normal airflow and it "should" remove the dust/dirt although if it's sticky (do you smoke/vape) it might not work as effectively.

Samhfx said:
Also I purchased this cable again since support apparently gave me wrong info https://www.overclockers.co.uk/cors...e-4-psu-power-cable-cp-8920284-ca-272-cs.html

That "should" work and it is the correct cable (Type 4) for your psu. It will be much neater than the awful supplied adaptor as well. Hopefully there won't be any problems as each socket for pci-e on the psu is raated for 300w and a 5070ti isn't going to draw anywhere near 600w. Just make sure the connector is plugged into the gpu correctly and securely.