One way to protect 12V-2x6 pin power connector of RTX 5090 from melting issues

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TIG 5 Sep @ 4:01am

One way to protect 12V-2x6 pin power connector of RTX 5090 from melting issues

One reason why I selected Asus Astral RTX 5090 is due to high reputation in the market in which (up to my best knowledge) no single report was related 12V-2x6 pin power connector melting or burning. However, I was too worried when I got such expensive GPU "Astral 5090" from having this bad scenario under a high stress gaming condition. Since two months, I was working to find a good solution that would protect Astral from this issue as I do not like smoking smell :slightly_smiling_face:

The following would be a solution that might protect 12V-2x6 pin power connector melting. I wrote this article in reddit and for more information you can refer to my reddit ( 50s_PC_Gaming_Fan ).

** Please go through this article and let me know your opinion:

https://www.reddit.com/r/ASUSROG/comments/1n2yshy/might_be_the_best_solution_to_protect_12v_26/?utm_source=share&utm_medium=web3x&utm_name=web3xcss&utm_term=1&utm_content=share_button

**Another Article also was published in short with detailed photos:

https://www.reddit.com/r/ASUSROG/comments/1n3tm3w/protect_power_connector_of_rtx_5090_5080_and_4090/?utm_source=share&utm_medium=web3x&utm_name=web3xcss&utm_term=1&utm_content=share_button

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Showing 1-15 of 21 comments

Monk 22 hours ago

Neat idea, but, I fear a small fan won't do anything should the cable be improperly installed as the melting and burning temperature is far hotter and an electrical fire will just melt from the inside anyway until a short happens.

Plus a tiny high tpm fan looks bad and is going to be annoyingly loud lol

Just ensure they are fully inserted and you will be fine, as you have the astral, you could monitor the power on one of those extra screens in the case.

TIG 22 hours ago

Originally posted by Monk:
Neat idea, but, I fear a small fan won't do anything should the cable be improperly installed as the melting and burning temperature is far hotter and an electrical fire will just melt from the inside anyway until a short happens.

Plus a tiny high tpm fan looks bad and is going to be annoyingly loud lol

Just ensure they are fully inserted and you will be fine, as you have the astral, you could monitor the power on one of those extra screens in the case.

===============================================================
Agree with you. If the power connector inserted well the temp would be not elevated crazy. However, I stressed Astral RTX 5090 with 3DMARK Speed Way and found the situation was scary. About to send one post to Reddit in this regard. Check my Reddit (50s_PC_Gaming_Fan) please and stay around.

_I_ 21 hours ago

lol, mounting a blower to cool the connector is not going to do anything to prevent it from melting

the heat is from poor contact to the socket and plug pins, the connectors plastic is insulating the pins from air, cooling that will do nothing
there is no heatsink or anything other than the pcb and maybe the wires going to the connector

and if you look at the gpu itself, it has fans that already blow air over the connector
https://rog.asus.com/graphics-cards/graphics-cards/rog-astral/rog-astral-rtx5090-o32g-gaming/gallery/

TIG 21 hours ago

This is the recent post in Reddit:

https://www.reddit.com/r/ASUSROG/comments/1n969oo/if_you_own_rtx_5090_5080_or_4090_you_need_to_read/?utm_source=share&utm_medium=web3x&utm_name=web3xcss&utm_term=1&utm_content=share_button

Monk 20 hours ago

If anything, you should invest in a better aftermarket custom cable.

Like I said, neat idea, but it won't stop anything.

rimfired 20 hours ago

i think blowing cool air directly at the gpu is an excellent idea considering the absolute JUNK plastic the connectors are probably constructed of on a typical psu that probably has a melting point just barely above the rated C temp of the average gpu .. it should very much so help mitigate the issue .. i see it all the time, people install a gpu with completely inadequate fans in their box and it just sits in the bottom etc, stewing in stale warm air with a couple of weeny low output generic fruiti fans on the front that together move about 15cfm of air lol ... theres more to cooling a pc than sticking a fruiti colored aio on the cpu and slapping a fan on the rear ...

Last edited by rimfired; 20 hours ago

_I_ 20 hours ago

the plastic is fine
its heat and fire resistant

the connector design is the problem
if they used a better connector for its 600w it would fix all the problems
an average 110/220 outlet connector can handle 1000+w and not start on fire

Beardface31 20 hours ago

Don't get your tips from Reddit. This won't solve anything.

Monk 20 hours ago

Originally posted by rimfired:
i think blowing cool air directly at the gpu is an excellent idea considering the absolute JUNK plastic the connectors are probably constructed of on a typical psu that probably has a melting point just barely above the rated C temp of the average gpu .. it should very much so help mitigate the issue .. i see it all the time, people install a gpu with completely inadequate fans in their box and it just sits in the bottom etc, stewing in stale warm air with a couple of weeny low output generic fruiti fans on the front that together move about 15cfm of air lol ... theres more to cooling a pc than sticking a fruiti colored aio on the cpu and slapping a fan on the rear ...

You really dont need much if any airflow in a case, the gpu fans alone are just fine.

Sure it won't run at its best, as every 5c or so degrees will slightly drop the max boost clocks, but it will run perfectly fine in spec.

My htpc has very little airflow and is even has very little space above abd below it in my unit, the card keeps itself under about 70c just fine all the same.

People tend to freak out about component temperatures without realising that in 99 out of 100 cases, their stuff is still running totally fine and in spec.

_I_ 20 hours ago

current mobos default to cpu fan at off til around 40-50c

you can set case fans to be off or very low til cpu/sb are 50c
it will be dead silent and only spin up when needed

#10

Discount Seagal 17 hours ago

Which 5090 brand would be the safest to buy? Asus?

Maybe this won't be an issue with the 6000 series?

Last edited by Discount Seagal; 17 hours ago

#11

Monk 17 hours ago

Originally posted by Discount Seagal:
Which 5090 brand would be the safest to buy? Asus?

Maybe this won't be an issue with the 6000 series?

It makes zero difference, just make sure you fully seat the cable.

#12

Discount Seagal 14 hours ago

Originally posted by Monk:
Originally posted by Discount Seagal:
Which 5090 brand would be the safest to buy? Asus?

Maybe this won't be an issue with the 6000 series?

It makes zero difference, just make sure you fully seat the cable.

Is that a guarantee for it to not melt though or is this a lottery kind of ordeal?

#13

Beardface31 14 hours ago

Originally posted by Discount Seagal:
Originally posted by Monk:

It makes zero difference, just make sure you fully seat the cable.

Is that a guarantee for it to not melt though or is this a lottery kind of ordeal?

If the cable is installed properly there is no issue.

#14

wing0zero 14 hours ago

Originally posted by Discount Seagal:
Originally posted by Monk:

It makes zero difference, just make sure you fully seat the cable.

Is that a guarantee for it to not melt though or is this a lottery kind of ordeal?

Mainly down to the cable quality that comes with the PSU, I got a good one I guess as I've ran my 5090 at full tilt for over an hour just to test and the wire gets warm but not hot so I'm guessing it's got good tolerance and spreading the load fairly even, don't have the tool to actually test each wire for a Amp reading, but mine is fine and isn't even close to melting temps with 575+W going through it.

As for my 5090 I bought the cheapest at launch which was the MSI Ventus OC where I am, no fany RGB but beyond that runs cool and quiet, I nearly spent a bit more on the ASUS Astral just because it looked cool but glad I didn't as it turned out that extra fan thing they put in created an annoying noise, or something like that.

#15

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Date Posted: 5 Sep @ 4:01am

Posts: 21

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