Ah, ok. Well, 3900x, aorus x570 master rtx 2080ti, 32gb corsair dominator plat rgb, 2 sdds, 2 nvmes, 9 120mm corsair hd fans and 1 140mm, corsair gpu, cpu block and pump and 2 commander pros. Same cables stayed in the case, the modded ones from evga, removed the 1000t2, and gamed for 3 hours with the 1300g2. System would power down playing pubg. total power draw was never more than 550 watts, usual 490. So yes, leads me to believe its the psu.