ok all you OC'ers im finaly working on a OC on this new mobo,(ga-ep45-ud3p) i got it running 3.83ghz with next to no major adjustments. but trying to take it to 4.03ghz it wont pass more than half mem used in IBT. here is a shot of what i have set in my bios.

MB Intelligent Tweaker(M.I.T.)
Robust Graphics Booster ...............:fast
CPU Clock Ratio ...........................:8 X
Fine CPU Clock Ratio.....................:+0.5
CPU Frequency .............................:4.03(471x8.5)

Advanced Clock Control Press Enter
CPU Host Clock Control..................:Enabled
CPU Host Frequency (Mhz) ............:471
PCI Express Frequency (Mhz) ........:auto
C.I.A.2 .................................isabled

CPU Clock Drive..........................:800mV
PCI Express Clock Drive...............:900mV
CPU Clock Skew (ps)...................:0ps
MCH Clock Skew (ps)...................:50ps

DRAM Performance Control
Performance Enhance...................:Standard
Extreme Memory Profile (X.M.P.).....isabled
(G)MCH Frequency Latch...............:Auto
System Memory Multiplier ..............2.00D
Memory Frequency (Mhz) ....800....:942
DRAM Timing Selectable ................:Manual

Standard Timing Control
CAS Latency Time.............5........5
tRCD ...............................7........5
tRP'..................................7........5
tRAS...............................24.......18
Advanced Timing Control
tRRD.......................4.................4
tWTR......................4..................4
tWR.........................8.................13
tRFC........................68...............56
tRTP.........................4................4
Command Rate (CMD) .......0........0

Driving Strength Profiles
Driving Strength ........................... 1066

Channel A
Static tRead Value...............8.....: 11
tRD Phase0 Adjustment.......0.......: Auto
tRD Phase1 Adjustment.......0.......: Auto
tRD Phase2 Adjustment ......0.......: Auto
tRD Phase3 Adjustment.......0.......: Auto
Trd2rd(Different Rank)...........6....: Auto
Twr2wr(Different Rank)..........6....: Auto
Twr2rd(Different Rank)...........5....: Auto
Trd2wr(Same/Diff Rank).........8.....: Auto
Dimm1 Clock Skew Control............: Auto
Dimm2 Clock Skew Control............: Auto

Channel B
Static tRead Value...............8........: 11
tRD Phase0 Adjustment........0.......: Auto
tRD Phase1 Adjustment....... 0.......: Auto
tRD Phase2 Adjustment .......0.......: Auto
tRD Phase3 Adjustment........0.......: Auto
Trd2rd(Different Rank)..........6.....: Auto
Twr2wr(Different Rank)..........6....: Auto
Twr2rd(Different Rank)........... 5....: Auto
Trd2wr(Same/Diff Rank)..........8.....: Auto
Dimm1 Clock Skew Control.............: Auto
Dimm2 Clock Skew Control.............: Auto

Motherboard Voltage Control
Voltage Type.………... Manual
CPU
Load Line Calibration......................isabled
CPU Vcore….…….1.27500V...........:1.325v
CPU Termination…..... 1.200V*........:1.200V
CPU PLL……………….1.500V*.......: 1.500V
CPU Referennce.……...0.760V*.......: .760

MCH/ICH
MCH Core……………...1.100V.........:1.22V
MCH Reference….…….0.760V.........:Auto
MCH/DRAM Ref.…......0.900V..........:Auto
ICH I/O…………….....1.500V............:1.50
ICH Core…………...…1.100V............:1.100V

DRAM
DRAM Voltage ……....2.100V..........:2.100V
DRAM Termination .…0.900V...........:Auto
Channel A Reference 0.900V............:Auto
Channel B Reference 0.900V............:Auto
Advanced Settings
Limit CPUID Max. to 3.....................: Disabled
No-Execute Memory Protect.................: Enabled
CPU Enhanced Halt (C1E)...................: Disabled
C2/C2E State Support......................: Disabled
x C4/C4E State Support....................: Disabled
CPU Thermal Monitor 2(TM2) ...............: Enabled
CPU EIST Function.........................: Disabled
Virtualization Technology.................: Disabled

any help would be greatly appreciated. thanks..