Ok, so I am on a 980x and so far I can not get 4.2Ghz stable (133 x 31):

Target CPU Frequency 4200MHz
Target DRAM Frequency 1600MHz

LN2 Mode [N/A]***
QPI Loadline Calibration [auto]***

Sync Mode []
AI Overclock Tuner []
OC From CPU level Up []
CPU Ratio Setting []
CPU Turbo Power Limit []

>CPU Configuration----------------------------
CPU Ratio Setting [31]
C1E Support [Disabled]
Hardware Prefetcher [Disabled]
Adjacent Cache Line Prefetcher [Disabled]
Intel(R) Virtualiyation Tech [Disabled]
CPU TM Function [Enabled]
Execute Disable Bit [Disabled]
Intel(R) HT Technology [Enabled]
Active Processor Cores [6]
A20M [Disabled]
Intel(R) SpeedStep(TM) Tech [Disabled]
Intel(R) C-STATE Tech [Disabled]
C State package limit setting [Disabled]
----------------------------------------------

BCLK Frequency [133]
PCIE Frequency [Auto]
DRAM Frequency [1600]
UCLK Frequency [3200]
QPI Link Data Rate [4800]

Memory Configuration Protect []

>DRAM Timing Control--------------------------
CAS# Latency [6]
RAS# to CAS# Delay [6]
RAS# PRE Time [6]
RAS# ACT Time [16]
RAS# to RAS# Delay [auto]
REF Cycle Time [auto]
WRITE Recovery Time [auto]
READ to PRE Time [auto]
FOUR ACT WIN Time [auto]
Back-To-BackCAS# Delay [auto]

Timing Mode [1N]
Round Trip Latency on CHA [auto]
Round Trip Latency on CHB [auto]
Round Trip Latency on CHC [auto]

WRITE To READ Delay(DD) [auto]
WRITE To READ Delay(DR) [auto]
WRITE To READ Delay(SR) [auto]
READ To WRITE Delay(DD) [auto]
READ To WRITE Delay(DR) [auto]
READ To WRITE Delay(SR) [auto]
READ To READ Delay(DD) [auto]
READ To READ Delay(DR) [auto]
READ To READ Delay(SR) [auto]
WRITE To WRITE Delay(DD) [auto]
WRITE To WRITE Delay(DR) [auto]
WRITE To WRITE Delay(SR) [auto]
----------------------------------------------

CPU Differential Amplitude [auto]
CPU Clock Skew [auto]
IOH Clock Skew [auto]
------------ Extreme Engine Digi+ ------------
Digi+ PWR Mode [X Balance]
PWR Volt. Control [auto]
Load-Line Calibration [100%]
CPU Voltege OCP [Disabled]
CPU PWM Frequency [auto]

Extreme OV [Disabled]
Extreme OC [Diasabled]

CPU Voltage [1.26]
CPU PLL Voltage [auto]
QPI/DRAM Core Voltage [1.35]
DRAM Bus Voltage [1.55]

>DRAM REF Voltages----------------------------
DRAM DATA REF Voltage on CHA [auto]
DRAM CTRL REF Voltage on CHA [auto]
DRAM DATA REF Voltage on CHB [auto]
DRAM CTRL REF Voltage on CHB [auto]
DRAM DATA REF Voltage on CHC [auto]
DRAM CTRL REF Voltage on CHC [auto]
----------------------------------------------

IOH Voltage [1.35]
IOH PCIE Voltage [auto]

ICH Voltage [auto]
ICH PCIE Voltage [auto]

---------- Spread Spectrum Control -----------
CPU Spread Spectrum [auto]
DRAM Spread Spectrum [auto]

So I guess my question is:

1 - Any suggestions?
and
2 - What would be the safe max under water for the 980x vcore? I know you are not supposed to go above 1.4v on QPI, but what are the other limits that I should be keeping too?

Bios is 704.