OK, Started Testing with DICE Yesterday in the morning and was just starting to cool things down so I could see if everything would Boot and run at my previous 5.2GHz before going any Colder.
After a Successful Boot at -28.3C on the Pot / -9.0C on the CPU, I started to raise the CPU Multipliers and Bclk settings to see how much higher I could go on Overclocking while Dropping the sub-zero temps as I went.
With the Temps at -52.9C on the Pot / -24C on the CPU and STILL Dropping, I started to run 3DMark Fire Strike at 5.45GHz and was finished with the first two Graphics Tests and JUST started the Physics Test and..................................OOPS!!
Well, @$%*#!,...........The System Completely Shut Down, and Would NOT Re-start at Temps of -62.2C on the Pot / NO Reading on the CPU since it Crashed.
I was reading "00" on the Diagnostic LED on the MB and since Nothing I did to remedy this situation made any difference, I decicded to Completely Tear Down the Rig to check for problems.
I Cleaned and re-assembled the MB again with only one stick of ram and a GTX 480 with a Corsair Air Cooler on the CPU, But Still had the same "00" LED Readout, So for whatever reason, My ASUS RIV BE Motherboard has Failed!
So Now I am in the process of cleaning up the MB to prepare it for RMA to ASUS for Warranty, and whether I get a replacement or Not, This is the time I will start preparing for the X99 MB's, CPU's, DDR4 Ram and probably start selling off the 4930K, DDR3 G-Skill Ram, and the Replacement Motherboard (If I can get an RMA Replacement).
I Have Pushed this System as far as I want and I DEFINITELY Do Not want to Damage my Four KPE's, Which I have already tested each in my EVGA X58 Classified to make sure THEY are Still Operating Correctly.
Such is the Life of an Extreme Overclocker, But I'll be Back!