Check that the 12v rails provide enough amps for the GPU. If the performance is good enough, I'd use it.
I run power supplies until they become insufficient, die, or no longer have the connectors I need.
I use a 2.5gbps Trendnet TEG-25GECTX as the LAN connection of my PFsense. Hosted as a VM in Hyper-V. Works fine. I occasionally use the iperf package on it for testing network performance on the network.
I find it more interesting now than I did at launch due to the price. For the same price as a 7800X3D and being sub $400, those extra four cores are enticing. My personal use computers will be solely full power, full feature cores, until I'm not...
ok got it now...
turns out it is the Intel x520 drivers... what a pita and such a shame that I bought 4 cards I am not going to use!!!
I purchased 2x Mellanox ConnectX-3 EN cards and BOOM... we are good to go..
just ordered 3 more, so now I can...