Question Dell Precision T1600 wont boot with second GPU

[sandvik.fredrik]

Hi,

First of all, not sure if this is the right place, so forgive me 😀

I have a Dell Precision T1600 that i use for Folding@Home.
It has 4gb ram and a Xeon E3 cpu at 3.1 ghz if i remember correctly.
It had one Nvidia Quadro 2000, i added another Quadro 2000 and this worked fine no problem.

Then i bought a cheap Gtx 960, swapped the psu to a 500w at the same time.
This works great to. It has a 6 pin power connector wich is connected.

But i thought i could stick one of the Quadro 2000 cards to get another GPU, but then it wont boot.
Tried both of them and i get the same fault. It gives me 1-3-4 on the fault code display.
It says:
"A possible error has occurred with a motherboard resource and / or a hardware failure."

But, if i bought another GTX 960 card of same style, do you think that would work?
I found a MSI GTX 960 of the same style as the one i have, only that i think the one i have is Lenovo branded.
But they look identical and GPUz says that the sub brand is MSI (on the one i already got)

Is there any obvious reason i dont get see here? Never used two cards before so i have no knowlage about this.

 

[rgd1101]

make and model of this 500w psu?

 

[sandvik.fredrik]

make and model of this 500w psu?

Its a Mist psu, not sure of the exact model name. It got a few years on its back also.

 

[sandvik.fredrik]

I think the motherboard can support up to 75w combined in the pci slots.

But the 960 card has a 6 pin connector. Does it get all its power from that connector or does it still uses power from the pci slot?

Is 75w a normal limit on pci slots? 🤔