** Official ** Gigabyte UD3 P45 Series -- EP45-UD3 / EP45-UD3R / EP45-UD3P

[BuGjAE]

He Guy I'm try @zodden BIOS setting and set 0.75 Mch Reference is working great!! here is my share BIOS setting

DRAM Performance Control
Performance Enhance...................: Turbo
Extreme Memory Profile (X.M.P.)………….Disabled <----I don't have this in BIOS
(G)MCH Frequency Latch...............: Auto
System Memory Multiplier ..............: 2.00D
Memory Frequency (Mhz) ..............: 1066 Mhz
DRAM Timing Selectable ................: Manual

Mem is at 5-5-5-15 2T and no change in sub timimg

Motherboard Voltage Control
CPU Vcore….……….........................1.43750V
CPU Termination…..... 1.28V
CPU PLL…………………....1.50V
CPU Referen.…………....autoV

MCH/ICH
MCH Core…………….....1.32V
MCH Reference….…….0.750V
MCH/DRAM Ref.…......auto
ICH I/O……………….....auto


DRAM
DRAM Voltage ……....1.8V
DRAM Termination .…autoV
Channel A Reference………..[Auto]
Channel B Reference………..[Auto]
Ch.A Address VRef………..[Auto]
Ch.B Address VRef………..[Auto]

I try to run HyperPI ,Orthos ,Memtest at the same time like crazy to find where unstable may happen!
Notice that when pull up the CPU VTT the MCH REF 'll up also.
I doubt that why AUTO voltage setting for this board seem unstable even @stock speed (E8600 3.33 Mhz)

Anyway I found 1 error memtest in this setting.