OK. So I tried to overclock to 4200 Mhz again. Unfortunately, I was unsuccessful, but in the process I did get more information as to why the system goes unstable.

When running Orthos, the system runs fine for about 5-10 seconds, but after that CPU-Z sensors read a massive drop in Vcore (From 1.36 to 1.03) and POOF the system shuts down. I'm not sure how to go about fixing that. I get the feeling if I can do something about it, I will be able to do a stable 4200 Mhz OC with this chip. Here are the settings I used.

Vcore - 1.36 (real) (Set to 1.32 in BIOS)
NB - 1.504
SB - 1.65
CPU VTT - 1.26
Ram 5-5-5-18, 2.1 Volts
PCIE Clock - 105 Mhz
CPU VID Drop - disabled.
All CPU Special functions except multi processing - off
Strap - 400/800 strap (But tried and failed on 333/667 too)

Any suggestions on solving this particular problem? or is it just a lost cause?