How far can I push a 850 Watt PSU 24/7 load?

[Collider]

So I'm doing some power balancing and wondering how much load I can safely put on a 850 Watt PSU for 24/7 operation?

I will be running multiple GPU's for compute purposes so they will be at 100% load 24 / 7.

I'm using EVGA 850 BQ, 80+ BRONZE 850W - I feel ~600W should be fine for 24 / 7 or can I put more on it?

I'm not worried about power efficiency.

 

[Mr Evil]

I like to leave a little headroom, but you should be able to pull 850W from it.