Tesla M40 GPU Performance in half

I’m using the Tesla M40 for some compilations(Folding home for example), the clocks, the memory clocks and power consumption its half of what supposed to be.
The clock its in 556Mhz but the gpu can do 1114Mhz
I tried to lock gpu clock but it says that its not supported.

Please run nvidia-bug-report.sh as root and attach the resulting nvidia-bug-report.log.gz file to your post.

As required on this forum, I send the nvidia-bug-report.

nvidia-bug-report.log.gz (697.6 KB)

The pcie slot it’s in is only an x2 slot with a power limit of 26W
PowerLimit 26.000W
You would need a different mainboard to fully use it.

I changed the motherboard from B550 to x570 and now with 4x instead of 2x, now gets the maximum clocks of the gpu.
Screenshot from 2024-02-18 14-05-25