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Main board will not reconize 1066 ram


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I had a custom computer built but the msi board wont read the 1066 ram only reads 800 mgz in auto mode

I just want to get this ram to read right in normal setting with out

over clocking it unless i have to do get it to run right. and i know nothing about over clocking or setting ram up manually

I tryed to contact msi and work with them they just keep saying the same over and over check the msi list of compatible ram


How do i know for 100% what ram do i have and how to test it

or how do i set up this ram manully to get it to run stable.


Please help out and please use computer noob talk and instructions

new to all of this.

this main board should read 1066 ram

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I've cleaned up your computer specs. The part # of the memory is right on the label. However, if you had someone recently build a system for you, then they should ensure it's running at the correct speeds, as that's what you originally paid for. If it's been a while, then they probably won't help you.


You'll have to set the speed / timings / voltage manually in the BIOS:


Memory speed: 1066

SDRAM CAS Latency: 5T

SDRAM RAS to CAS Delay (tRCD): 5T

SDRAM Row Precharge (tRP): 5T

SDRAM Active to Precharge Delay (tRAS): 15T

Memory Voltage: 2.1v (read the memory label, may need 2.2v)

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Here's a 24 page research for your board. Read it. It is from people who have used your board and the issues they have had with the overclock and/or stability. This will give you a good approximate view of what your board will do. Also, be sure to update to the newest BIOS. Make sure that EIST and Speed Spectrums are disabled in the Cell Menu. Then go into the chip features menu where the Execute Disable Bit feature resides, press F4, and make sure that C1E is disabled and that Thermal Management is disabled.




Download Memtest86+ V2.01 from--->

Download CPU-z from--->

Shut the system down. Insert a single stick of DRAM in Slot 1 (Closest to the CPU) and slot 3. Restart, Enter your BIOS and Load Setup Defaults. Save Setup Defaults and set to these values:

Cell Menu

D.O.T. Control = Disabled
Intel EIST = Disabled
SLI-Ready Memory = Disabled
System Clock Mode = Manual
   FSB Clock (MHZ) = 333
   DRAM Clock (MHZ) = 1066

Advance DRAM Configuration

DRAM Timing Mode = Manual
CAS Latency (CL) = 5
tRCD =  5
tRP = 5
tRAS = 15
tRRD = Auto
tRC = Auto
tWR = Auto
tWTR = Auto
tREF = Auto
1T/2T Memory Timing = 2T

CPU Voltage = Auto
DRAM Voltage = 2.10v
NB Voltage = 1.5v
NB Memory Reference Voltage = Auto
DIMM Memory Reference Voltage = Auto
Memory Terminator Voltage = Auto
CPU GTL Reference Voltage = Auto
NB GTL Reference Voltage = Auto
FSB Terminator Voltage = Auto
SB Sleep Mode Voltage = Auto
PCI Expander PLL Voltage = Auto


After setting to these values, save them and boot to the Memtest ISO. 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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  • 4 weeks later...

i can not get this TWIN2X4096-8500C5D to run stable

will only run stable on auto setting at 800 mhz fail safe and the system still has crash issues MSI techs are dorks no matter how i word it or say it or spell it they only say does that ram match the main board ram specs

answer is yes


how do i get the right settings for this ram and main board so i can get this computer stable


please help me with ram setting for this set up 5-5-5-15 2.1 v or 2.2 v

what in bios is it i set these too this main board has way to many options and have never done this before


please use simpleton words and instructions

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