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simond83
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R740 GPU - Bricked PCIe card from PCIe/ATX power?

I've got a PCIe 3 card, 8x, that has a 12V ATX power tab on it for extra power. I popped it into one of the slots on the riser, then connected a Dell R740 GPU cable which had a 6 pin PCIe power connector, to the PCIe card, which also had a matching 6 pin, albeit, as it now turns out, a 12V ATX 6 pin.

So, i think i've fried this card now. When booting the server, i got 2 warnings;

UEFI60 - Power required exceeds the system PSU's
UEFI77 - PCIe device error on previous boot

I have dual 1100w PSU's installed, so that's not an issue. I've tried the card in a normal PC on windows and no joy there either. So, i assume the card is now bricked. Thinking it all over again, it looks like a fed a riser 225W power supply into this card expecting 12V. So, my questions are these;

-Would the MB have fed just 12V from that connector and I'm just unlucky and got a DOA card?
-Did this power surge brick the card?
-Seeing the above errors makes me think it's bricked. Would this damage anything else, like the risers or the PCIe slot??
-Would this power surge affect anything else in the system?

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2 Replies
DellEMC

Re: R740 GPU - Bricked PCIe card from PCIe/ATX power?

Hi,

 

The cable that you are mentioning, does it have the PN#TR5TP? If yes, the power should be 12V. Though there are some requirements with installing GPU into R740, you can refer to it via the user documentation. 

 

I do not have a definite answer if the server power has bricked the card.

 

If you have removed the card from the riser and the server is able to POST, means there is no issue. Though, to be thorough on damaging other components, do a hardware test from LCC to confirm no issues. 

 

 


Thanks,
Joey Chong
Dell EMC Enterprise Support Services
Get support on Twitter @DellCaresPro

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simond83
1 Copper

Re: R740 GPU - Bricked PCIe card from PCIe/ATX power?

Thanks for your quick reply Joey. To be clear, the unit is the GPU R740, with the low heatsinks. I have 1x GPU (RTX 2080) in and working already, it's just this video card that's got me scratching my head. It's an AJA Kona5;

-28W typical, 35W maximum via ATX power.
-PC Internal ATX Power Connector (Molex p/n 45559-0002)

The machine boots without it in (and with it in). I'm not near the chassis today, but pretty sure i used PN#TR5TP (supplied in the box) and it fit perfectly. Looks like i've done everything correctly, but something triggered these 2 events and it's definitely related to this card install. Are there some BIOS settings i need to tweak to control the power draw etc?

UEFI60 - Power required exceeds the system PSU's

UEFI77 - PCIe device error on previous boot

I'll run an LCC just to triple check there are no issues. I do have another box and card (2 units of both) to build, so i can test with this other card to see if i got a DOA unit, but don't want to run into the same issue twice!

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