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Cm2x1024-6400 & Evga 122-ck-nf68-a1


Byrdman

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I've ordered 2 1GB Sticks of Corsair CM2X1024-6400 and the EVGA 122-CK-NF68-A1 LGA 775 NVIDIA nForce 680i SLI ATX Intel Motherboard.

 

These are compatible, aren't they?

If so, what are the optimal timing settings for speed and stability with this setup? Is there a particular motherboard BIOS version I should be using with these RAM sticks?

 

Is it possible to get the motherboard to run stable at 1066MHz FSB (or 1333MHz FSB) with these modules or will I be stuck at 800MHz?

 

Thanks!

 

Byrdman

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With that MB and a 1066 FSB CPU just load setup defaults and then set the memory Voltage to 2.0 Volts and set SLI Ready Memory to CPU 0% and set the CPC/Command Rate to 2t should be all you need to set to get the tested settings and performance. But if you plan on over clocking you will need to set everything manually. - RAM GUY

 

Does this answer apply to me? We are both using the EVGA 122-CK-NF68-A1 motherboard but he is using CM2X1024-6400C4 while I have the CM2X1024-6400 .

 

Thanks!

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No the modules you have don not support EPP the timings will need to be set manually.

Use these settings for reference:

Testing parameters for Twinx/XMS2-6400:

 

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

CPU External Frequency: Manually set to 200MHz

DDR2 SDRAM Clock: Manually set to 800MHz

PCI Express Freq: Auto

PCI Freq: 33.33

Performance Mode: Standard

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

Write to Precharge Delay: 15 (If it's Listed)

Command Rate: 2T

DDR2 SDRAM Voltage: 1.9

Advanced voltage control

CPU Vcore offset:_Disabled

DDR2 Termination: 0.5x

CPU to NB HT:____1.200V

NB to SB HT:_____AUTO

NB Core/PCI-E:___AUTO

SB Core/PCI-E:___AUTO

SB Standby core:_+1.500V

 

Output driver control

CKE:______AUTO

CS/ODT:__1.00X

ADD/CMD:_1.00X

MEMCLK:__1.00X

All other settings are motherboard defaults.

Maximum DDR2 recommended VDIMM: 2.1 Volts

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