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GIGABYTE GA-X38-DQ6 + Corsair TWIN2X 8500C5 DDR2, 2048MB CL5, Kit w/two 1GB Dimm's


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I am getting bluescreens from time to time. I do not know if i have the correct settings in bios for the memory. Should I set it all on auto or should I set i manualy?


The memory says 2.1V on it, I have +0.30 in bios at the time.


I do not know if its my graphics card or my memory thats not working as it should, but my computer should be working much better during gameplay, since everything is new up to date stuff. Been getting bluescreens now and the in Media Center and games as well.


Please help. I want to know what the correct timings, voltage should be for this memory in bios.


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  • Corsair Employees

From the link in my signature:

But with your MB the CPU Frequency will be set as default and you would need to manually set the memory frequency at DDR1066/533 Mhz


Testing parameters for Twinx/XMS2-8500/C5:

Twin2x1024-8500 Data Sheet

Twin2x2048-8500C5 Data Sheet


Motherboard make and model: Asus M2N32-SLI Premium/Deluxe

Each pair is tested and packaged together using the following settings:

AI Over Clock Tuner: Manual

OC Operation: Disabled

NOS Operation: Disabled

CPU External Frequency: Manually set to 268 MHz

PCI CLK1: Auto

PCI CLK2: Auto

DDR2 Voltage control: 2.200V

CPU Core Voltage: Auto

CPU Multiplier: 10

DDR2 SDRAM Clock: Manually set to 800MHz

DRAM Timing Selectable: Manual

SDRAM CAS Latency: 5T

SDRAM RAS to CAS Delay (tRCD): 5T

SDRAM Row Precharge (tRP): 5T

SDRAM Active to Precharge Delay (tRAS): 15T

SDRAM Write Recovery Time: 5

1T/2T: 2T

A1 Clock Skew: Auto

Advanced voltage control

CPU Vcore offset:_Disabled

DDR2 Termination: 0.5x

CPU to NB HT:____1.200V

NB to SB HT:_____AUTO



SB Standby core:_+1.500V


Output driver control





All other settings are motherboard defaults.

Maximum DDR2 recommended VDIMM: 2.1 Volts, However this DDR2 module would be the only one rated at 2.2 Volts Max.

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Where should I edit settings manually? For the voltage.


I have these options and settings today:


DDR2 OverVoltage Control: [Normal]

(G)MCH OverVoltage Control: [Normal]




MCH Reference Votage Control [Normal]

DDR Reference Votage Control [Normal]


Which one/s should I change to +0.05 as you wrote earlier?

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Usually in frequency and Voltage control. However some MB makers like to rename things from reference naming scheme so if you do not find it in your manual or MB I would suggest contacting the MB maker to help you with the settings.


DDR2 OverVoltage Control: +.3 Volts

(G)MCH OverVoltage Control: +.05 Volts



If you increase the reference Voltage you are changing the default setting. IE: reference DDR2 Voltage is 1.8 Volts so what every you add to reference would be set as default or DDR2 OverVoltage Control: +.3 Volts + DDR Reference Votage Control [Normal] = 2.1 Volts But if I understand what GigaByte is saying, and I would Strongly suggest asking them. They wrote the BIOS and they should understand it.


MCH Reference Votage Control [Normal]

DDR Reference Votage Control [Normal]

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