Submitted 1 year ago by shoulderoforion@fedia.io to technology@lemmy.world
At this point, it’s unclear whether the issues are one-offs or systemic.
I can really recommend both Der 8auers video and Buildzoids video on this. Der 8auer has good thermal imaging of imbalanced current between two 12V HPWR plugs, and Buildzoid has the explanation why the current can’t be balanced with the current setup on 5090s.
And it burns, burns, burns
The gpu of fire
The gpu of fire
I never get the newest thing, people who buy brand new stuff are just beta testers for the product imo
1080ti days were just simpler times!
I really appreciate the specificity of the headline, rather than the clickbait it could have been.
Alternate title:
Nvidia SLAMMED as 5090 GPUs start caching on FIRE
Well only a handful of users exist.
Better would have been:
Handful of users complain about 3rd Party Cables Melting Their 5090FE.
All that cost and this is what you get…
Are people improperly connecting them again?
Every picture I’ve seen has been an outside pin. So my theory is it’s the cable getting tugged for cable management and even though it’s clipped in, it’s not making as good of contact.
That or just a bad cable design. I’ve bought a few cables from cablemod and I’m not happy with the wiring they used. Their website says “Crafted with 16AWG wiring” but they also brag about the flexibility of their cables so I assume they’re using stranded wires instead of a solid core so you lose a decent chunk of ampacity (and heat sinking).
The problem seems to be load balancing, or lack thereof. A German guy on YouTube noticed that his cable got up to 150°C at the PSU end, due to one wire delivering 20 or 22 amps, while the others were getting a lot less pumped through them. 22 Ampere is pretty much half the power draw of the card, through one wire instead of three if the load was properly balanced between them. That’s why it ran so hot and melted to shit.
22 Ampere is pretty much half the power draw of the card, through one wire instead of three if the load was properly balanced between them.
Apparently the reference design only has one current shunt, so they can’t even measure the imbalance. Madness.
The person on reddit used a third party cable instead of the one supplied with the device.
extremetech.com/…/psa-dont-use-third-party-power-…
www.reddit.com/r/…/rtx_5090fe_molten_12vhpwr/
It melted on both sides (PSU and GPU), which indicates it was probably the cable being the issue.
youtu.be/Ndmoi1s0ZaY?si=SWRjC4AgseXSmOrm
youtu.be/kb5YzMoVQyw?si=eSGnUbFv6OJ4jtEg
It’s poor design on Nvidias part. There is no load balancing.
So, when is the first party cable going to be launched?
What I’ve learned from this whole fiasco after owning a problem-free 4090 for over 2 years:
That said, I’m skipping this GPU generation (and most likely the next one as well). Hopefully in 2-4 years AMD or Intel will be on more level grounds with nVidia so that I can finally stop giving them money just to have good ray tracing performance.
Use the 12VHPR cable that came with your PSU
Strolls nervously through room with RX 580…
I got lucky and picked up a 7900 XTX for a reasonable price last gen and it’s been a really great card. I’ve got a couple systems coming up on needing a refresh (1080 Ti and a 2080 Ti) and I’m planning on upgrading both of them to a 9070 XT. I’m staying away from Nvidia until they start pricing their GPUs at prices actual consumers can afford instead of corporations looking to build AI farms.
That’s bad, but that aside - It might be time to consider alternate power delivery to these cards. The power they need should warrant having a standard c13 plug directly on em or something.
Four of the standard 8 pin PCIe power connectors would work well.
The new connector really should have used some large blade contacts to handle 50 amps.
Strange, a second nickel just appeared in my hand.
I got a dime. Also, the monkey’s paw just curled another finger, but that’s not important.
Well…I mean…that’s kind of bound to happen when you draw 600W into a device that size I suppose. I feel like they’ve had this issue with every *090 card, whether it be cables or otherwise.
Yeah my 3090 K|ngP|n pulls over 500w easily, but that’s over 3 8 pin PCIe cables, all dedicated. Power delivery was something I took seriously when getting that card installed, as well as cooling. Made sure my 1300w PSU had plenty of dedicated PCIe ports.
beeb@lemm.ee 1 year ago
A handful? Wow that’s gotta be like 50% of the 50 series out there!