Ok so here goes. I'm fairly new to all this, FYI.

I just built my rig with the following specs:
GA-EP45-ED3P
E5200
OCZ Reaper HPC 4GB (2x2GB) DDR2 1066
Sapphire HD4850

I have been trying to overclock it as much as possible but cannot get a stable system with good settings. Right now these settings are causing the system to not pass the post on the first cold boot but once it tries once, it passes.

I appreciate all input. The goal is to get the system using a 400MHz FSB with the RAM at 1066 MHz matched 1:1.

The bios settings are:

MB Intelligent Tweaker(M.I.T.)
Robust Graphics Booster ...............: Fast
CPU Clock Ratio ..........................: 10
Fine CPU Clock Ratio.....................:.0.5
CPU Frequency ...........................: 3.50

Clock Chip Control
Standard Clock Control
CPU Host Clock Control..................: [Enabled]
CPU Host Frequency (Mhz) ............: 333Mhz
PCI Express Frequency (Mhz) .........: 100
C.I.A.2 .......................................: [Disabled]

Advanced Clock Control
CPU Clock Drive...........................: <<< 800
PCI Express Clock Drive.................: <<< 900
CPU Clock Skew (ps)....................: <<< 0
MCH Clock Skew (ps)...................: <<< 0

DRAM Performance Control
Performance Enhance...................: [STANDARD]
Extreme Memory Profile (X.M.P.).....: Disabled
(G)MCH Frequency Latch...............: [Auto]
System Memory Multiplier ..............: 2.40B
Memory Frequency (Mhz) ..............: 800Mhz
DRAM Timing Selectable ................: [Manual]

Standard Timing Control
CAS Latency Time........................5
tRCD .........................................5
tRP'...........................................5
tRAS..........................................18

Advanced Timing Control (all Auto)

Motherboard Voltage Control
Voltage Type.………... Manual
CPU
CPU Vcore….………........................: 1.3
CPU Termination…..... 1.200V*.......: 1.24
CPU PLL…………………....1.500V*.......: 1.5
CPU Reference.………….0.755V*.......: [Auto]

MCH/ICH
MCH Core…………….....1.100V...........: 1.22
MCH Reference….…….0.800V...........: [Auto]
MCH/DRAM Ref.…......0.900V...........: [Auto]
ICH I/O……………….....1.550V............: [Auto]
ICH Core…………...……1.100V............: [Auto]

DRAM
DRAM Voltage ……....1.800V............: 1.96
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]<!-- google_ad_section_end --><!-- / message -->