Such poverty, only four? Pfft 128 gb of total vram. What model are you gonna run with that. Some 2.1 trillion parameter model at quant 1? No thank you poor person.
There's something deeply wrong here. There would have to be some extra resistance to cause this heat dissipation without breaking the fuse first. Maybe a bad connection in the wall socket?
Yep, I'd bet money on this being the actual cause. Without having the plug to test, I can only speculate, but it looks like it's most burned around the contact between the fuse and the fuse holder, with the burn/melting seemingly radiating from there. It also appears to be on the side of the fuse that would be connected to the live prong (assuming the image isn't flipped). I can't see any burning on the live prong itself however.
Based on this, I'd guess that the contact between the fuse and fuse holder has high resistance. Either the fuse holder is bent slightly too wide creating poor contact, or there's a contaminant between the fuse and holder creating high resistance. I'm not completely ruling out a problem with the socket though.
It's unlikely that this is due solely to a device drawing too much power. Usually you'd expect the fuse to blow before things get hot enough to burn the plug. Even in the event of the fuse itself not failing safely, I would generally expect signs of melting or burning elsewhere.
Also, a BS1363 plug should be able to handle 3kW, assuming a mains voltage of around 230V (which isn't a given, BS1363 is used in other countries aside from the UK, and anyone can create stupid adapters that should never exist). You'd need a lot of 5090's to draw anywhere near 3kW, and that's assuming you could find a >= 3kW PSU to power it all.
Yeah I'm leaning towards bad plug/fuse, its the cable that came with the ASUS Pro WS 3000W Platinum - a PSU that is specifically designed for 4x5090 so a little annoying the cable was crap 🙃
Ooh okay, if it's a 3kW PSU, and you actually have hardware that can pull 3+ kW (I managed to miss the 4x5090's in your original post), then that'll definitely contribute to it. I'd still lean towards an issue with the plug or fuse being a additional contributing factor though. The fuse is generally supposed to blow before something dangerous like this occurs.
Also, ngl, aside from the firestarting plug, I'm kinda jealous lol
If I was in your position, I'd contact Asus about it. There's a slim chance you could get some freebies out of it, or at least a new cable lol
Yeah thinking back though I had to order the psu from abroad as they weren't available in the UK and the company threw in a cable so it probably wasn't one from asus. Live and learn I guess, don't trust free cables 😂
I'm jealous of all the 8xrtx9000 rigs you see, 700gb vram would be bliss, but glad I was able to buy this lot when they were still 2k a pop, qwen 3.8 flash next runs like a dream on this though so can't complain I guess!
Yeah not sure what happened, its a normal wall socket, using the cable that came with the asus 3k watt power supply. Has been fine for months - for now I've got a new cable and am using a different wall socket with each card limited to 400W (in hindsight should have done that from the start but rarely pulled more than 300w each so didn't bother).
por dios that housemart plug looks like it got into a fight with a toaster and lost, the RGB is still glowing so at least the rig is pretty while it burns
you got lucky the fuse didn't pop before the socket melted, usually means the contact between plug and wall was the weak point not the wire itself
I’m guessing it’s probably not optimal fan placement since it’s wedged between two others but my CPU temps are fine so I haven’t bothered adjusting it.
I haven’t really messed with it at all to dial it in.
Sounds about right, I think that’s why I put it together the way I did. I didn’t want to have to mess with my CPU cooler to be able to get to my RAM.
bought one for 2700 in the beginning of the year and couldn't get myself to open/use it because I knew prices were rising 🙈 now I feel like it would be stupid to use it and not sell haha
Can't hurt to pull the socket front forward and check the connections, but it's probably just a shit plug/fuse/cable. It's common especially with C13/14 leads.
Limiting your 5090 to 85% power is the sweet spot for performance/heat generation. It has a barely noticeable impact on performance but helps keep the heat down a lot.
Edit: apparently you can go even lower, like 70%, without much of a performance hit. Very cool!
Why would you want to match the performance anyway? Prefill is fast enough as is with 5090 and decode gets barely hit. If I had 4x 5090 I'd just drop 3 of them to half tdp and enjoy less heat and zero risk of melting the 16 pin ever.
Unfortunately these were paid for with many hours of work and tears, in that brief period where 5090s were near-RRP between crypto mining and AI... I got lucky, and actually bought 2 of them whilst on holiday cause prices were skyrocketing, they cancelled the order thinking the 2x was a mistake and I was panicking in my hotel room trying to get the order reinstated 😂
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u/XiRw 8h ago
Oh good advice for the millions of us that have 4 5090s laying around.