So... All you Rev 3 owners are pansies.
Seriously. My UD3 died (story below) and I ended up replacing it with a 990FXA-UD5 Rev 3.0. After I fixed a RAM problem (story 2 below), I set LLC to high, which holds voltage perfectly by the way, and set my voltages back to what I used for my UD3 along with all my clocks. Worked the first time. Installed my OS, drivers, and all programs at 5Ghz too, on my 8320. And no I did not turn on HPC at all. It took like 10 minutes to set everything since I kinda memorized my OC, and most of it was learning where they hid things.
Story 1: I slipped when working on my loop and some water poured into my AX1200. (I can feel the custom loop and PSU people cringing from here at that statement) Quick lesson of the day, PSUs take a while to fully drain out it's caps. Anyway, as expected system does not turn on after the PSU went "tick". Turns out my motherboard just ate about 1.2 kilowatts of power on it's own and saved the rest of my system. Won't post, no beep codes, etc. It's dead, so I go get a UD5 and a new AX1200 (story 3).
Story 2: Had problems doing anything, including setting my RAM to it's rated profile in BIOS. Later moved the whole kit to my Z87X-OC which has an LED readout for POST status. One chip is iffy. Will call G.Skill. In the mean time backup rig is running 24GB while my comp uses the other computer's 32GB. After putting in new RAM, OCing was no issue, but the BIOS is a pain to use. I'll get over it.
Story 3: Corsair PSUs are the best things ever. I let the old AX1200 dry over night. Plugged it in and started it up with a loop test jumper, the PSU is fine. No need for even an RMA, it survived. Now I have 2 AX1200s. Also, everything else in the rig besides the motherboard also survived.
Lastly, my 7990 is in the loop now, so my system has a new look: