CPU OC Problem

Hello everyone.I used these settings till now and the system was stable.
FSB Frequency - 457
PCIE Frequency - 100
FSB Strap To North Bridge - Auto
Dram Frequency - Auto
Dram Timing 5-5-5-15
CPU Voltage - 1,23750
FSB Termination Voltage - Auto
Memory Voltage - Auto
North Bridge Voltage - Auto
PCIE Spread Spectrum - Auto
CPU Ratio - 7.00
DRAM Static Read Control - Auto
DRAM Read Training - Auto
MEM OC Charger - Auto
CPU Spread Spectrum - Auto
PCIE Spread Spectrum - Auto
CPU Margin Enhancement - Optimized (default)

I tried this now and I can get him to be stable in no way.

FSB Frequency - 476
PCIE Frequency - 100
FSB Strap To North Bridge - Auto
Dram Frequency - Auto
Dram Timing 5-5-5-15
CPU Voltage - 1,23750
FSB Termination Voltage - Auto
Memory Voltage - 2,1
North Bridge Voltage - 1,3
PCIE Spread Spectrum - Auto
CPU Ratio - 7.00
DRAM Static Read Control - Disabled
DRAM Read Training - Disabled
MEM OC Charger -Enabled
CPU Spread Spectrum - Disabled
PCIE Spread Spectrum - Auto
CPU Margin Enhancement - Performance

is not going because of RAM according to me, because I do not know RAM with the primary settings taller mhz overcloking. In what the mistake is according to you?what kind of settings you recommend.because if I put the frequency of RAM onto taller one then the system turns into unstable one then if I use the first stable settings.

My config:
Asus P5Q-Pro motherboard
Intel Core 2 Quad Q8200 Processzor+asus v72 cooler
4x2 Gb Corsair c5-pc8500 ddr2 1066 mhz ram
Gigabyte 4870x2 videocard
640 gb wd + 500 gb seagate hard

Forgive because of the misspellings because that English is not my mother tongue, and please answer.