Re: AMD GPU hard lockups
On Wed, 2 Aug 2023 23:12:02 +0200
zithro <slack@rabbit.lu> wrote:
> On 02 Aug 2023 03:21, Celejar wrote:
> > when I opened the case, sure enough, the
> > cable feeding the GPU had burned and broken.
> >
> > Fortunately, I don't see damage to the system's power cable or to the
> > GPU itself, just to the 6 pin to 8 pin PCIE adapter cable (the HP PSU
> > has only 6 pin cables, and the GPU needs an 8 pin connection). I
> [...]
> >
> > I'm going to order another one, from a reputable company this time, and
> > hope that it was just the cheapo implementation that was flawed, and
> > not the whole concept of 6 pin to 8 pin adapter cables ...
> >
>
> Cables can burn because too much current (Amps) is flowing through them.
> As problems only happen when gaming (or heavily using the GPU), this may
> be the case.
>
> I think your GPU is drawing too much current from the 6 pins PSU rail.
> (Are any other peripherals connected on the GPU rail ?).
I don't think so.
> I'd also compare the power requirements of the GPU to the total Amps the
> GPU PSU rail can provide (each rail and voltage has specific specs).
The Z440 officially supports up to an NVIDIA Quadro K6000 12GB, which
draws 234 watts, so it ought to be able to handle my Red Devil RX-570.
The Red Devil specifies a minimum system power of 450 watts, and my
Z440's PSU is 700 watts:
https://support.hp.com/us-en/document/c04506309#AbT3
https://www.powercolor.com/product?id=1493267392#spe
> The difference between 6 and 8 pins can be seen like the difference of
> cable section between a small lamp and a computer (or a microwave).
> Power your computer or microwave with a lamp cable, and you'll see a
> nice fire.
>
> If the designers used 8 pins, my wild guess is that it has a reason ;)
But reputable companies do produce 6-8 pin adapters, e.g.:
https://www.startech.com/en-us/where-to-buy/PCIEX68ADAP
https://www.microcenter.com/product/615426/micro-connectors-6-pin-to-8-pin-pcie-adapter-power-cable-black-yellow
https://www.walmart.com/ip/Cable-Matters-2-Pack-6-Pin-PCIe-to-8-Pin-PCIe-Adapter-Power-Cable-4-Inches/944325506
(I just ordered the Cable Matters one.)
--
Celejar
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