Networkcard

Hi there! I am wiring up my local network for 10 G over CAT7/CAT8 Cables. Got my router and switches sorted. Now my question is... is there a good top 10 list of network cards for pcs? i dont really know much about PCIE Network cards... what i do know is that some cards have a management chip...

Can a pcie network card be detected by other people if it doesnt have antennas ? And what happens if the firmware is not installed? Can it be detected ?

I have a question. If the cpu in my desktop is blown, and that is the only issue, will that keep the light on my motherboard from lighting up? I know you can't power on the motherboard without a working cpu, but I am just wondering if, without the cpu, will the light still come on. If not, then...