Question Confusingly low benchmark score for new GPU/PSU/CPU, is my motherboard the culprit?

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Aug 21, 2023
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Hey all, posting to confirm my suspicions of a motherboard that needs replaced.
I recently upgraded my GPU, CPU, and PSU.
When testing in cinebench, I received confusingly low benchmark scores for my GPU. (I will post my CPU scores as well for clarity).

I'm wondering if my motherboard is the culprit..
In games it appears to be running okay, but these scores make me concerned I could be getting more out of my machine.

MOBO: AB350 Rev 1 (latest firmware installed, F51H)
GPU: RX 6600
CPU: Ryzen 7 5700x
RAM: Vulcan 32GB DDR4 3600mhz Ram
PSU:Thermaltake Smart 700W
Drives: 1x Nvme SSD, 2x HDD, 1x SSD

Cinebench Scores
CPU(Multi Core): 548
GPU: 344

Any guidance here? For reference a 2070 super scores 6k+
 

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