Hi all
Having some problems with clocking an ES 980X (B1) CPU on the Rampage III Extreme. I'm wondering if there's something I'm overlooking or if the CPU is just not capable of more than 5.4GHz
Below are my settings at which I can bench 5.4, but anything higher (using C Station for multi) causes Wprime to fail

Rampage 3 Extreme - 0402
Kingston 3x1GB DDR3 2000 CL9
Ikonik Vulcan 1.2KW PSU

Sync Mode: Disabled
AI Overclock Tuner: Manual
CPU Ratio Setting: 28
BClk Frequency: 166
PCIE Frequency: 101
DRAM Frequency: DDR3-1664
UClk Frequency: 3327MHz
QPI Link Data Rate: 36X
CPU Differential Amplitude: 800mV
CPU Clock Skew: Auto
IOH Clock Skew: Auto
-------------------------------------
Digi+ PWR Mode: X-Power
PWM Volt. Control Auto
Load-Line Calibration: Full
CPU VOltage OCP: Disabled
CPU PWM Frequency: AUto
Extreme OV: Enabled
Extreme OC: Auto
CPU VCore: 1.6
CPU PLL: Auto
QPI/DRAM Core Voltage: 1.4
DRAM Bus Voltage: 1.654
IOH Voltage: Auto
IOH PCIE Voltage: 1.5
ICH Voltage: Auto
ICH PCIE Voltage: Auto
QPI Voltage OCP: Enabled
IOH Voltage OCP: Enabled
DRAM Voltage CP: Enabled
QPI PWM Frequency: auto
IOH PWM Frequency: Auto
DRAM PWM Frequency: Auto
Any help would be appreciated