Question Second GPU power issue (STRIX Z790-F GW II + RTX A6000) ?

Nov 26, 2024
1
0
10
I recently had a motherboard blow up issue on my machine,
My old system:

PRIME Z790-P​

+RTX 4090​

+RTX A6000​

Everything worked fine until my PSU surged and killed motherboard. (Luckily only the motherboard)

I replaced motherboard with the following: (Also replaced PSU obviously)

ROG STRIX Z790-F GAMING WIFI II​

Now my RTX A6000 only used 150 watts maximum in the bottom PCI-e slot.
(I tested the RTX A6000 in the top slot and it works fine there, using the full 300w TDP)

Is this a limitation of the strix Z790-F II motherboard or can I fix this with software or bios settings?

The power is delivered straight from the PSU, so it seems strange that it is power limited, I feel like this should be solvable with a setting or something, but I can't find anything myself.
GPU-z shows RTX A6000 is running on PCIe x16 4.0 @ x4 1.1
I did update to latest bios as well (the one with Intel micro fixes).

Or did I make a mistake in thinking I 'upgraded' the motherboard... If the motherboard is not good enough, what motherboard should I look for instead?