So I've got a couple dedicated lines put in and my main machines have EVGA supplies - EVGA 1000GQ and the other is an EVGA 850BQ.  They are both 5950x systems. The 1000GQ system has a 6800XT graphics card and the 850BQ has a 6600XT.  

Both systems cause tripping of the breaker (one or both on the same circuit - doesnt matter.  Also note that this is a dedicated AFCI breaker, not the breaker in the panel itself.   

Last ditch effort, I swapped the supplies with spare units from work (One is an Antec 750W Pro - I think made by Seasonic) and the other is a 650W Seasonic.  Neither of those in the same systems will trip the breakers.  Swapped back the EVGAs and I get tripping.

I came across another thread somewhere online about people with EVGA supplies having some issues. Can anyone else confirm anything like this?

Do they trip when you flip the PSU switch, or when the system is running?

I have not tried replacing them, only because its only tripping with the EVGA supplies for some reason, but fine with the other power supplies. Unfortunately its required for my area for anything considered a living space. 

So I guess I'll sell the EVGA PSU's and move on. Thanks again btw.
 

ty_ger07
Did you try replacing the AFCI breaker? They are notorious for going bad and tripping for nuisance faults. Just a consideration.
Is an AFCI breaker required for that circuit? AFCI breakers are notorious for being incompatible with certain loads. Even a simple surge protector may be incompatible. The PSU has high frequency circuitry inside which can cause abnormal harmonics on the line which the AFCI doesn't like.
I wouldn't use an AFCI unless it is required for some reason, or you have reason to believe that hasty or cheap electricians mutilated that circuit.

ty_ger07
Did you try replacing the AFCI breaker? They are notorious for going bad and tripping for nuisance faults. Just a consideration.
Is an AFCI breaker required for that circuit? AFCI breakers are notorious for being incompatible with certain loads. Even a simple surge protector may be incompatible. The PSU has high frequency circuitry inside which can cause abnormal harmonics on the line which the AFCI doesn't like.
I wouldn't use an AFCI unless it is required for some reason, or you have reason to believe that hasty or cheap electricians mutilated that circuit.

Thing is, the GQ and the BQ have nothing in common in terms of design. The topology is different, although one is a derivative of the other. The OEM is different. The FETs and even capacitor layout is different.

You do have a point regarding noise though. Forward topologies are somewhat noisy on the line (both bq and gq are forward derivatives). It might as well be them introducing emi/rfi noise and the circuit breaker being overly sensitive to such interference.