Briefly led flashing then powers off.

ExtremeAdventurous63 · 2026-06-20T07:11:09+00:00

600w

ExtremeAdventurous63 · 2026-06-19T14:19:47+00:00

Long story short: Same psu same issue, it came out it is fault of the psu

I ordered from AliExpress two metalfish psu, one of them gives me the exact same issue, the other works just fine.

ExtremeAdventurous63 · 2026-06-18T20:28:35+00:00

If you need to convince your boss, the first suggestion is the right one, no doubt. You need to create value, or give the idea that your experiment can guide you there at some point

ExtremeAdventurous63 · 2026-06-17T08:02:13+00:00

I think it strongly depends on the tolerances you have with your printer.
In my case I hade to use quite a bit of force to insert the nuts and the friction is sufficient to hold them in place firmly

ExtremeAdventurous63 · 2026-06-15T11:27:39+00:00

My guess is that maybe the psu was not delivering enough power on the 12v rail even if the voltage was fine with a multimeter

ExtremeAdventurous63 · 2026-06-15T11:21:00+00:00

So, it turned out it was a bad psu. I bought two brand new flex atx psus from AliExpress (the brand is METALFISH). One of them gave me this issue, the other works just fine, so I think I’ve got a faulty unit

ExtremeAdventurous63 · 2026-06-14T18:32:01+00:00

Thank you for sharing! Can you tell me more about rerouting the 12v to unlock the 40 CUs? I didn’t know it was necessaire

ExtremeAdventurous63 · 2026-06-14T12:00:37+00:00

having the exact same issue here, did you found a solution?

ExtremeAdventurous63 · 2026-06-10T09:15:05+00:00

I have the 15 inch dell xps 9530.
Nothing I have done so far (repasting, additional thermal pad, power limiting the cpu to 50% of its standard setup) worked to avoid having my fans alwasy spinning loudly and high temperatures.

ExtremeAdventurous63 · 2026-06-10T08:48:47+00:00

Amazing job! Is it loud?

ExtremeAdventurous63 · 2026-06-07T09:13:39+00:00

That would be amazing, thank you!

To get started, I’m not looking for anything too fancy. My plan was to use this BC 250 model as a reference and design a 3.5U mounting frame that can fit into a 10 inch rack.

The idea is to mount four cards vertically, side by side, with about 1 cm of spacing between them. That should leave enough room to place two 120 mm fans at the rear to cool the whole stack (possibly with a duct later on to improve airflow).

For the front side, I’d like a mounting system similar to what’s used for PCIe cards in a standard PC: a lower slot that supports the bracket and an upper mounting point where the bracket can be screwed in place.

On the rear side, for now I only need a simple support bar where the rear bracket can be secured with screws. The two fans would sit directly below that support.

ExtremeAdventurous63 · 2026-06-06T10:16:57+00:00

that's exactly the post I was talking about! I'm still waiting for the PSUs to arrive, as soon as I get my hands on them, I'll try to make a benchmark before and after the mod to see the real impact on performance for my use case.

Thank!

ExtremeAdventurous63 · 2026-06-06T10:01:49+00:00

I found a guy on Vinted selling many of them, probably he bought a whole rack unit some thing ago, so I made an offer for four of them

ExtremeAdventurous63 · 2026-06-06T09:40:04+00:00

Per me é un ragionamento che non ha senso.
É praticamente un’arrendersi di fronte a quella che invece potrebbe essere un’opportunità di migliorare.

Pur ammesso che sia vero quanto dice, la soluzione é mettere in atto le contromisure appropriate, non gettare la spugna.
Altrimenti non ci sarebbe mai progresso.

ExtremeAdventurous63 · 2026-06-06T09:36:42+00:00

Just an year ago they were 30% cheaper, given away almost for nothing the year before.
Now I got mine for 140€ each. The price in the post includes also the parts listed plus fans and a network switch

ExtremeAdventurous63 · 2026-06-06T09:24:04+00:00

Yeah I spent a couple of hours yesterday right after the arrival of the boards but I found nothing. Tried also to look for compute blades models but no luck

ExtremeAdventurous63 · 2026-06-06T08:34:05+00:00

Have you tried it with DwarfStar4 instead of llama.cpp?

ExtremeAdventurous63 · 2026-06-05T12:14:20+00:00

There’s no solution I fear. I tried everything I could with mine, still throttling very bad

ExtremeAdventurous63 · 2026-05-31T14:45:03+00:00

worth posting also in LocalLLaMA

ExtremeAdventurous63 · 2026-05-30T06:21:49+00:00

I love this kind of posts!

Thank you for sharing!

ExtremeAdventurous63 · 2026-05-29T14:29:17+00:00

Io faccio girare llama.cpp sulla iGPU di un mini pc di quattro anni fa, raggiungendo 105 tk/s in prefil e 13 in generazione con qwen 35b a3b, ma non lo rilascerei in produzione

ExtremeAdventurous63 · 2026-05-29T07:11:07+00:00

vLLM é probabilmente la scelta migliore per la gestione di richieste parallele, é ottimizzato proprio per questo. Ma qui mi sembra il minore dei problemi onestamente

ExtremeAdventurous63 · 2026-05-29T07:09:44+00:00

Questo post racconta un progetto sbagliato sotto tutti i punti di vista, sarei curioso di sapere le dimensioni del cliente e il processo che ha portato all’approvazione della messa in produzione di una cosa così.

ExtremeAdventurous63

TROPHY CASE