Question RTX 5090 cable temps ?

[kalern123]

So basically after all the news about cable melts it got me a bit worried. So I tried a "load" test. Not an official one, but I tried Indiana Jones on max settings for around an hour and it drew 560 Watts stable and the GPU temp reached 75c.


The highest I was able to measure on the connector was 78-80c while the temps on the cable itself were around 72. It wasn't easy to measure each individual cable, but it was no more than 7 c between the hottest and coldeset cable.

Is 80c a worrying temperature you think or is this alright for an hour on pretty much max load?

EDIT: It's not the RTX 5090 FE by the way. It's the MSI RTX 5090 Trio OC

 

[COLGeek]

What PSU are you using? Did it come with the proper cable or did you have to use an adapter?

 

[kalern123]

What PSU are you using? Did it come with the proper cable or did you have to use an adapter?

No adapter. Proper cable and it’s the nzxt 1200C 1200W PSU

 

[USAFRet]

Is 80c a worrying temperature you think or is this alright for an hour on pretty much max load?

80C is 176F
To me....that is FAR too high.

 

[kalern123]

80C is 176F
To me....that is FAR too high.

Yeah I don't know. It's exactly in the "crack" where the cable connects with the GPU. I expect the temp to be at it's highest in that area.

 

[XxDarkMario20xX]

Cant you use MSI afterburner to control GPU fans and is the high temps in gaming or in idle?

Yeah and with 5090 and melting cables yeah its worrying news but hopefully you dont experience it

 

[COLGeek]

80C is 176F
To me....that is FAR too high.

Agreed. this seems rather warm. Have you contacted NZXT about this?

 

[kalern123]

Cant you use MSI afterburner to control GPU fans and is the high temps in gaming or in idle?

Yeah and with 5090 and melting cables yeah its worrying news but hopefully you dont experience it

Max load for 1 hour

 

[kalern123]

Agreed. this seems rather warm. Have you contacted NZXT about this?

Yeah, idk. I do expect it to get hot with 560W, but I have so little references to go after. I have not contacted them. I would say it's on average around 70-73, it was just at one certain point it reached 80 at a very certain point. I think it might be heat coming from the GPU aswell heating the pins.


When I measure less than an inch away the cables are all 64-68.
Not too easy measuring the temps with a pizza digital thermometer lol

 

[COLGeek]

If NZXT answers in a timely fashion, I'll share the response. Lots of other traffic on this general topic, as I am sure you are aware.

For example: https://forums.tomshardware.com/threads/nvidias-rtx-5090-power-cables-may-be-doomed-to-burn.3873375/

 

[XxDarkMario20xX]

Max load for 1 hour

Yeah, idk. I do expect it to get hot with 560W, but I have so little references to go after. I have not contacted them. I would say it's on average around 70-73, it was just at one certain point it reached 80 at a very certain point. I think it might be heat coming from the GPU aswell heating the pins.


When I measure less than an inch away the cables are all 64-68.
Not too easy measuring the temps with a pizza digital thermometer lol

I would contact them more people report these issues then they have to do something. This melting cable thing should not be happening!

 

[COLGeek]

I am not impressed with NZXT's answer:

When using the 12V-2x6 cable, the cable temperature should remain within safe operating ranges during normal use. While some warmth is normal, the cable shouldn't get hot to the touch. Our C1200 Gold ATX 3.1 power supply and cables are designed to meet ATX 3.1 specifications and include thermal protection features to ensure safe operation. If you notice the cable becoming unusually hot, please ensure: - The cable is properly seated at both the PSU and GPU connections - There are no bends or pinch points in the cable - Adequate airflow around the cable and GPU area Thank you!

 

[magbarn]

I am not impressed with NZXT's answer:

When using the 12V-2x6 cable, the cable temperature should remain within safe operating ranges during normal use. While some warmth is normal, the cable shouldn't get hot to the touch. Our C1200 Gold ATX 3.1 power supply and cables are designed to meet ATX 3.1 specifications and include thermal protection features to ensure safe operation. If you notice the cable becoming unusually hot, please ensure: - The cable is properly seated at both the PSU and GPU connections - There are no bends or pinch points in the cable - Adequate airflow around the cable and GPU area Thank you!

That’s a canned CYA answer.

 

[kalern123]

I am not impressed with NZXT's answer:

When using the 12V-2x6 cable, the cable temperature should remain within safe operating ranges during normal use. While some warmth is normal, the cable shouldn't get hot to the touch. Our C1200 Gold ATX 3.1 power supply and cables are designed to meet ATX 3.1 specifications and include thermal protection features to ensure safe operation. If you notice the cable becoming unusually hot, please ensure: - The cable is properly seated at both the PSU and GPU connections - There are no bends or pinch points in the cable - Adequate airflow around the cable and GPU area Thank you!

Thanks you for helping me out with this.

The response from NZXT is so basic. All of the things mentioned are obvious in my opinion.

 

[vov4ik_il]

If you're worried, you can just set the power limit to say, 450W in the settings and forget about it. You do not need more than that daily, and it gets up to 560 due to synthetic tests...

P.S you do use two different wires/connectors between the PSU and the GPU, right? Not one with 2 plugs on it?

 

[kalern123]

If you're worried, you can just set the power limit to say, 450W in the settings and forget about it. You do not need more than that daily, and it gets up to 560 due to synthetic tests...

P.S you do use two different wires/connectors between the PSU and the GPU, right? Not one with 2 plugs on it?

Yeah, I was thinking about setting it to 80%, but at the same time it's stupid that you have to manage power yourself as a consumer becasue of a possible manufacturer flaw.


To answer your question; It's no adapter and it has the 12V 2x6 I think it's called.

An update on the hot cable: I did a furmark 2 test for 12 min. The card used a stable 570W of power. I tried to measure the cables and the connector/plug again, and the temp reads are now 55-60c on the cable and 73c on the connector. The card itself got to a temp of 78c maximum. From what i've seen others posting, 73 seems okay and far below it's limit. I think the heat radiation from the GPU itself heats the connector up.

I'm not entirely sure what the 80c temp read I got earlier was, nor do I know how accurate my Ooni pizza digital thermometer and how it does it's readings. Maybe I just hit a hotspot?

 

[ilukey77]

Im interested in what the PSU has too do with it this ?

this is a crazy psu

Seasonic Prime PX-2200 ATX 3.0 Platinum 2200W Power Supply​

$965aud but if the cables supplied are bad its likely to melt the 5090 ??

Who gets the blame Nvidia of the PSU suppler ??

Then you have the risk of cooking your lovely new ( LOL ) 2000usd GPU with everyone hand balling the warranty .

PSU company can by rights blame Nvidia and Nvidia being Nvidia will most likely play PR and blame improper connection eg: user error !!

 

[ilukey77]

Kind of got me worried again this gen that ( like last gen ) i weighed up the 4090 vs the 7900xtx

ultimately i went the 7900xtx red devil few reasons
1 price
2 ive had good experiences with AMD gpus over the last few gens
3 i was worried about melting plugs..
3.5 ( as it works into 3 ) protecting my investment if im going to spend big $$$ 4090 to now 5090 levels of money am i wrong for expecting less issues and less headaches trying to claim warranties etc etc ??

I was seriously thinking of waiting till the end of the year and buying a 5090 as im not impressed with AMD's sub par offerings this gen ..

Now maybe not !!