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Setting 1066 mHz speed with 2x2048 8500C5 and GA-P35C-DS3R


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Use SPD auto settings in Bios and Twin 2x2048-8500C5 memory sticks will only run at 800 mHz.


Test run to date:

1) Used two different sticks of Twin 2x2048-8500C5 memory- no change

2) Maunaly set system memory multiplier - no change


Any suggestions on how to get the 1066 Mhz speed.



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You have a hybrid DDR2/DDR3 board and they can be problematic with memory. Download memtest from http://www.memtest.org and extract the ISO image. Burn the ISO image to an CD-ROM disk.


Download CPU-z from-->

Enter your BIOS. On the main BIOS screen press Ctrl + F1. You will see the screen flicker. Next select the MB Intelligent Tweaker option. On that screen you will see many additional settings that were not there before. Set to these values:


MIB Intelligent Tweaker (M.I.T.)

Robust Graphics Booster = Auto
CPU Clock Ratio = 9
CPU Host Clock Control = Enabled
CPU Host Frequency (Mhz) = 266Mhz
PCI Express Frequency = 100Mhz
C.I.A.2 = Disabled
Performance Enhance = Standard
System Memory Multiplier = 4
Hi Speed DRAM DLL Settings = Option 2
DRAM Timing Selectable = Manual
CAS Latency Time = 5
DRAM RAS# to CAS# Delay = 5
RAS# Precharge = 5
Precharge Delay (tRAS) = 15
ACT to ACT delay = Auto
Bank Write To READ Delay = Auto
Refresh to ACT Delay = 0
Read to Precharge Delay = Auto

System Voltage Control

DDR3 OverVoltage Control = +.3V
PCI-e OverVoltage Control = Normal
(G)MCH OverVoltage Control = +.03
CPU Voltage Control = Auto 

Run Memtest for two full passes, then (If Stable), enter Windows and post screenshots of CPU-z's CPU, Memory and SPD tabs.

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