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

[Jsunn]

it seems to me like your CPU does need quite a vcore for only 4GHz.
i also suspect the "MCH Reference" setting value will require to be adjusted by you.

but i can't be so sure yet, try this setting and post back.

@ PangingIII,

Here are my settings. I put MCH Ref on Auto and I the system rebooted and I got a BIOS overclock error. I went back into the BIOS and changed the MCH Ref to 0.745v. I am running through Prine95 small ffts as I type this.

The systems seems to be stable, but my Core temps are at 56 Deg at 100% load.

my Core volts in windows is 1.33v acording to Everest. Here are my Settings.

--++EDIT++--
It seems my setting aren't stable, when I reboot, I get the BIOS overclock error.

Trial 3

MB Intelligent Tweaker(M.I.T.)
Robust Graphics Booster ...............: Auto 
CPU Clock Ratio .......................: 9 
Fine CPU Clock Ratio...................: 0.0 
CPU Frequency .........................: 4.05 GHz (450X9)

Clock Chip Control 
Standard Clock Control
CPU Host Clock Control.................: [Enabled] 
CPU Host Frequency (Mhz) ..............: 450 
PCI Express Frequency (Mhz) ...........: Auto 
C.I.A.2 ...............................: [Disabled] 

Advanced Clock Control [Press Enter]
CPU Clock Drive........................: 800mV 
PCI Express Clock Drive................: 900mV 
CPU Clock Skew (ps)....................: 0ps 
MCH Clock Skew (ps)....................: 0ps 


DRAM Performance Control
Performance Enhance....................: [Turbo] 
Extreme Memory Profile (X.M.P.)........: [Auto] 
(G)MCH Frequency Latch.................: [333MHz] 
System Memory Multiplier ..............: 2.4B 
Memory Frequency (Mhz) ................: 1080 
DRAM Timing Selectable ................: [Manual] 

Standard Timing Control
CAS Latency Time.......................: 5 
tRCD ..................................: 5 
tRP'...................................: 5 
tRAS...................................: 15 

Advanced Timing Control
tRRD...................................: 4 
tWTR...................................: 4 
tWR....................................: 12 
tRFC...................................: 68 
tRTP...................................: 4 
Command Rate (CMD) ....................: Auto 

Driving Strength Profiles
Driving Strength ......................: Auto 

Channel A
Static tRead Value.....................: [9] 
tRD Phase0 Adjustment..................: [AUTO]
tRD Phase1 Adjustment..................: [AUTO]
tRD Phase2 Adjustment .................: [AUTO]
tRD Phase3 Adjustment..................: [AUTO]
Trd2rd(Different Rank).................: [AUTO] 
Twr2wr(Different Rank).................: [AUTO] 
Twr2rd(Different Rank).................: [AUTO] 
Trd2wr(Same/Diff Rank).................: [AUTO] 
Dimm1 Clock Skew Control...............: [AUTO]
Dimm2 Clock Skew Control...............: [AUTO]
DDR Write Training.....................: [Disable] 

Channel B
Static tRead Value.....................: [9] 
tRD Phase0 Adjustment..................: 0 [AUTO]
tRD Phase1 Adjustment..................: 0 [AUTO]
tRD Phase2 Adjustment .................: 0 [AUTO]
tRD Phase3 Adjustment..................: 0 [AUTO]
Trd2rd(Different Rank).................: [AUTO] 
Twr2wr(Different Rank).................: [AUTO] 
Twr2rd(Different Rank).................: [AUTO] 
Trd2wr(Same/Diff Rank).................: [AUTO] 
Dimm1 Clock Skew Control...............: [AUTO]
Dimm2 Clock Skew Control...............: [AUTO]
DDR Write Training.....................: [Disable] 


Motherboard Voltage Control
CPU
Load-Line Calibration..................: [Enabled] 
CPU Vcore..............................: 1.35V 
CPU Termination........................: 1.24V 
CPU PLL................................: 1.50V 
CPU Reference..........................: [AUTO] 


MCH/ICH
MCH Core...............................: 1.22V 
MCH Reference..........................: 0.745v  ***on [auto] I get a BIOS overclock error
MCH/DRAM Ref...........................: [AUTO] 
ICH I/O................................: 1.500V 
ICH Core...............................: 1.100V 

DRAM
DRAM Voltage...........................: 1.96v 
DRAM Termination ......................: [AUTO] 
Channel A Reference....................: [AUTO] 
Channel B Reference ...................: [AUTO]