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NVIDIA RTX 50 SERIES - Technical/General Discussion

SeeNoWeevil said:
Listening to Buildzoid, it seems like the general consensus is that the sense pin changes on the new connectors basically achieve nothing. The issue is that the GPUs can't load balance or sense current irregularities. 3090tis had the regular old 12VHPWR connectors, drew a lot of power and they didn't have issues because they were load balanced properly. 40 and 50 series cards (at least the high power 90 series) are inherently faulty.
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I think the point buildzoid was making is that there is absolutely nothing that can be done after a conductivity problem occurs without major revisions to the design.

We need to distinguish between two things:

1) The possibility of there being a conductivity error caused by misaligned pins etc. This is what the H++ standard seeks to address. Lower chance of issues because everything should be seated correctly. It IS better.

2) What happens when there IS a conductivity issue. As buildzoid notes, the overall design standard is poor because there is little that can be done. The ASUS / Zotac type of fix of signalling to the user that something is wrong is a mitigation, but it doesn’t change the inherent problems caused by of shunting so much watts / current through tiny wires - when things go wrong, then go wrong in a big way.
 
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Guys there's a big yellow warning at the top of the graphics forum and any threads in this forum. I suggest you read it. Continue to take the thread off topic and you're on holiday for a week. Pack it in.
 
Nitefly said:
I think the point buildzoid was making is that there is absolutely nothing that can be done after a conductivity problem occurs without major revisions to the design.

We need to distinguish between two things:

1) The possibility of there being a conductivity error caused by misaligned pins etc. This is what the H++ standard seeks to address. Lower chance of issues because everything should be seated correctly. It IS better.

2) What happens when there IS a conductivity issue. As buildzoid notes, the overall design standard is poor because there is little that can be done. The ASUS / Zotac type of fix of signalling to the user that something is wrong is a mitigation, but it doesn’t change the inherent problems caused by of shunting so much watts / current through tiny wires - when things go wrong, then go wrong in a big way.
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The sense pins only confirm the physical plug is seated properly, it can't tell if there is a problem with any of the pins or cables.

What bothers me about these cables is the ridiculous width requirements. If you buy a big, wide AIB card with a 12VHPWR connector on the side. The recommendation is that there is no bend within the first 35mm of the cable! Ok, so that's now what, a wide GPU plus ~50mm of cable sticking directly out. How many cases is that actually possible in? How would a user even determine if said combo fits in their case from some non-specific 'width' measurement of the card they just bought?? It's all nonsense.
 
Nitefly said:
2) What happens when there IS a conductivity issue. As buildzoid notes, the overall design standard is poor because there is little that can be done. The ASUS / Zotac type of fix of signalling to the user that something is wrong is a mitigation, but it doesn’t change the inherent problems caused by of shunting so much watts / current through tiny wires - when things go wrong, then go wrong in a big way.
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That's because 12VHPWR was (afaict) never designed to carry a single 12v DC load, much less one that's 600W at 50 amps. It was designed to carry 3/4 separate loads of 150W at 12.5 amps (or there about) so it was designed to use wires commensurate with that task (18 AWG wires) along with 3/4 extra wires to compensate for bad connections, breaks in wires, and other such faults.

If you want a wire to carry 600W at 50 amps you'd need to be using something like a 6-8 AWG wire with something close to a 4mm diameter, and you'd need four of those (two lives in case one has high resistance and two grounds). If you do that you'd need a new connector because you'd also need bigger terminating pins and a bigger housing.

Or you could just go back to how the device used to be designed and make use of 3/4 separate loads.
 
Engineer at gigabyte and Intel says the 12hwpr connector's biggest issue is its allowed to run too close to its breaking point.

He says the cable as it stands today should be limited to 375w, no GPU should be allowed to pull more than 375w from a single 12hwpr cable


If you want to make your pc safer, undervolt your GPU now to use under 375w

videocardz.com

RTX Cablegate update: First RTX 5080 cable melts, more 5090 cases, MODDIY changes its upgrade recommendation page - VideoCardz.com

Blackwell and Ada are hot right now Daisy chain of expansion cables are not a good idea for RTX 5090 FE Redditor RevolutionaryPea7570 claims that his RTX 5090 Founders Edition experienced a cable burn. While the card appears to be unaffected, the same cannot be said for the PSU cables, which...
videocardz.com videocardz.com
 
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Grim5 said:
Engineer at gigabyte and Intel says the 12hwpr connector's biggest issue is its allowed to run too close to its breaking point.

He says the cable as it stands today should be limited to 375w, no GPU should be allowed to pull more than 375w from a single 12hwpr cable


If you want to make your pc safer, undervolt your GPU now to use under 375w

videocardz.com

RTX Cablegate update: First RTX 5080 cable melts, more 5090 cases, MODDIY changes its upgrade recommendation page - VideoCardz.com

Blackwell and Ada are hot right now Daisy chain of expansion cables are not a good idea for RTX 5090 FE Redditor RevolutionaryPea7570 claims that his RTX 5090 Founders Edition experienced a cable burn. While the card appears to be unaffected, the same cannot be said for the PSU cables, which...
videocardz.com videocardz.com
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So basically all 40/50 gen 90 series cards are faulty.
 
Gonna be interesting to see how many of these find their way to the bay , stocks looking a little empty on there at the minute so will see how many end up on there... the fools who paid £4000 for FE yesterday must be feeling good :cry:
 
Jay-G25 said:
Gonna be interesting to see how many of these find their way to the bay , stocks looking a little empty on there at the minute so will see how many end up on there... the fools who paid £4000 for FE yesterday must be feeling good :cry:
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A Gamerock 5090 should be coming any day (can't say from where, but I had no idea they sold GPUs)... As much as I'm not a scalper, I'm definitely going to put that one for sale. Although I'm only planning to ask 3k. I don't want to take the ****. I paid 2250 for it.

I'll keep the FE. I'm planning to keep it under 450v anyway.
 
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no_1_dave said:
I hope I can get that for my 4090, but I don't trust eBay lol
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I've sold a few GPU on the bay now and touch wood never had an issue .... i am past the 30 day period now as well so its a done deal . for what its worth it seems i let it go cheap as they are selling for £2000 now which to me is insane considering they never cost anything like that new , were £1700 brand new at release :cry:
 
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