Well... It looks like I may have to do my 4th RMA on my z390 dark anyway. The rear USB C port seems borked on this current RMA board. I only tried using it for the first time 2 days ago. Only registering as USB2. Same device/cable gets USB3 just fine from front header. Tried my phone too. I should have tested it when I got it, the USB C port I mean. Last board had issues with the standard USB A ports. Board before that had a VRM overheating issue. And the original board had a bad PCIE_1 slot that only ran at 8x. Also my original 3080 ftw3 ultra (I got when I got the current RMA z390 dark) only ran at 8x, so had to RMA that. I remember back in the day, my first EVGA product, GTX 660 something-something, was artefacting hard right out of the box. Then the replacement had some issue too. Thankfully EVGA has a great RMA program, but damn, I don't want to tear down my loop. I guess I kind of needed to anyway tho. After last partial teardown to reconfigure my rads, I'm only getting 2.8L/min after refilling. Probably need to blitz it. I think I got 3.8L/min before the refill. Got a XR5-280, XR5-360, XD5 pump/res, bykski 3080 gpu block and XC-7 cpu block. From what I understand, the corsair XD-5 doesn't hit it's claimed 800L/hr anyway. I mean my temps are fine even at 2.8L/min but that's not what I should be getting. Might upgrade to an EK D5 But I'm going way off topic now.