Cabelmod 12VHPWR issue

[adamr]

For a few months now been running my 4090 off the cabelmod 12VHPWR cable and it’s been fine. Since last week though I’d get the random black screen with fans all ramped up. Monitor goes into standby and the only option is to hard shutdown and turn on again. This happened randomly … be it browsing or gaming. Happens after a minute or happens after a good couple of minutes

What I tried:
1. Was on the beta F13c bios and reverted to F12 (the stable version)
2. Took off the cpu checked pins and reapplied paste and reseated (burnt pins a thing on X3D 🙈)
3. Reseated GPU
4. Checked GPU power connector and also power cable (burning 4090s a thing also)
5. Cleaned and removed any evidence of dust in the PC (painful exercise)
5. Reinstalled windows as a last resort

And … the issue reared it’s head again

Black screen and fans ramping to max speed usually points to gpu. GPU and CPU temps when this happens is always perfectly well below threshold (either is never over 60deg C ). so I googled

Reddit - Dive into anything

reddit.com

And changed out the cabelmod cable for the Corsair 12VHPWR and … it’s all perfect now. Just thought I’d post if anyone especially on RTX 40 series is having a similar issue.

 

[Toy Machine]

I'm having similar issues but might be related to my OC/UV (2700mhz @975mV/+1000 mem) where I sometimes lose display momentarily, however I've always been on the 12VHPWR cable. Some start ups end up freezing a few seconds into windows & restarts, which then drops my core down 15mhz and seems stable at that so more than likely the OC. Still a bit weird as I don't recall initially experiencing this issue when I was on the adapter originally.

I also have an issue with my monitor where the display ports are extremely finniky where the slightest movement results in loss of display (confirmed with another owner of the same screen they don't have such issues), way out of the normal for a correctly seated cable so I ended up switching to a cable with the lock mechanism on it which largely resolved my issues. I also have bent pins in my mobo socket lol, but I know that isn't causing an issue as for months my system has been stable on the CPU side, might need to check my connectors again because reseating hasn't resulted in any difference. SO I'm stumped where the issue might lie as at stock it seems ok but I'm more for running an UV to not burn the card under load & in general better temps.

i.e. will be watching this to see if anything significant comes about it as I'm a bit stumped that a previously stable profile seems to not be stable across multiple cards in the same system, one that is a better sample.

 

[D3TTOL]

My 4090 has done that a few times as well but without the fans ramping up.
Screens go blank and that's that. No extra ramping up, no extra noise. Hard reset and it's fine again.
Using the default power connector that came with the GPU.

It has only happened maybe 3 times

 

[adamr]

My 4090 has done that a few times as well but without the fans ramping up.
Screens go blank and that's that. No extra ramping up, no extra noise. Hard reset and it's fine again.
Using the default power connector that came with the GPU.

It has only happened maybe 3 times

They saying on the 12VHPWR end it has a component that is quite fragile and can go wonky after time. Maybe swapping out the cable for say a Corsair replacement could solve your issue. Screen going into standby randomly usually points to gpu

Edit: it’s the sense terminals that are fragile

 

[adamr]

I'm having similar issues but might be related to my OC/UV (2700mhz @975mV/+1000 mem) where I sometimes lose display momentarily, however I've always been on the 12VHPWR cable. Some start ups end up freezing a few seconds into windows & restarts, which then drops my core down 15mhz and seems stable at that so more than likely the OC. Still a bit weird as I don't recall initially experiencing this issue when I was on the adapter originally.

I also have an issue with my monitor where the display ports are extremely finniky where the slightest movement results in loss of display (confirmed with another owner of the same screen they don't have such issues), way out of the normal for a correctly seated cable so I ended up switching to a cable with the lock mechanism on it which largely resolved my issues. I also have bent pins in my mobo socket lol, but I know that isn't causing an issue as for months my system has been stable on the CPU side, might need to check my connectors again because reseating hasn't resulted in any difference. SO I'm stumped where the issue might lie as at stock it seems ok but I'm more for running an UV to not burn the card under load & in general better temps.

i.e. will be watching this to see if anything significant comes about it as I'm a bit stumped that a previously stable profile seems to not be stable across multiple cards in the same system, one that is a better sample.

Yea yours does appear because of the overclock … but the cables could be deteriorating over time with the power loads on them !?

Edit: think the point is with 40 series cable considerations are more key than ever before. Just think the design to begin with is not 100% suitable with these power loads

 

[Toy Machine]

Yea yours does appear because of the overclock … but the cables could be deteriorating over time with the power loads on them !?

Most likely on the OC but still a little stumped on it, also maybe suspecting the inverter system I have it on causing some deg but it would be extremely quick deg if that is the case because this cable is basically brand new, hasn't even been in for a month xD The inverter system is still fine, but maybe the switch over is causing some kind of spike I'm never really seeing as I stay idle when power is going off, but when coming back on I don't mind having a load on the system as then it doesn't trip as the inverter trips over a 300-400w load when power goes off. So I'm hoping it hasn't caused some kind of damage as for the cables, I make sure they are seated properly before PC receives any power/is turned on.

They should just replace all our cards with the new spec, fucken Nvidia xD

 

[Nyt Ryda]

Corsair 12VHPWR here, all flawless.

Not a fan of those Cablemod cables/adapters. They rushed development to get onto the market first and there's still a bunch of people with Cablemod products that burnt their 4090s.

I only trust NVIDIA's adapter and those from PSU companies.

 

[adamr]

Update: cablemod reached out to say they will send me a replacement