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Faulty CMX512-2700C2 Stick


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I have two sticks of Corsair 512MB XMS2700 C2 RAM and I believe that one is faulty. When this stick is being used, by itself or in combo with another stick, the computer randomly shuts down. This problem does not occur when the stick is not present. I have also ran a memory test on this stick and have indeed received confirmation of faulty RAM with recommendation to replace the stick.


System specs are:

- P4 Northwood 1.8(A) CPU

- X-Micro GeForce4 Ti4200 64MB Video Card

- 80GB Western Digital 8MB Buffer HDD

- Gigabyte GA-8SRX Mobo


Any solutions or further advice would be most appreciated. Also any further information required will be gladly forwarded.


Thank you.

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  • 3 weeks later...

Firstly, sorry about the late reply, I was on holiday.


Make and model of RAM is CMX512-2700C2 XMS2700V1.1022360


BIOS Settings:

Linear Frequency Control: Disabled

CPU clock (Mhz): 100

DRAM clock: N/A

AGP clock: Auto

PCI clock: Auto

AGP voltage control: Normal

DRAM voltage control: Normal

CPU voltage control: Normal

Normal CPU Vcore: 1.500V

Top Performance: Disabled

Configure DRAM Timing: Auto

*CAS Latency Setting: Auto

*DRAM RAS Active Time: 6T

*DRAM RAS Perchange Time: 3T

*DRAM RAS to CAS Delay: 3T

AGP Aperture Size: 64MB



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  • Corsair Employees

Please make sure you have the latest BIOS installed for your MB and load optimized defaults settings, and try the following BIOS settings;

CMX256A or CMX512-2700C2

Advanced Chipset Features: Hit (Ctrl + F1)

CPU Freq: 133 MHz (533 FSB)

Memory Frequency: 333

Memory Timing: User Define/Manual

SDRAM CAS Latency: 2T

SDRAM RAS to CAS Delay (tRCD): 3T

SDRAM Active to Precharge Delay (tRAS): 6T

SDRAM Row Precharge (tRP): 3T

DDR Reference Voltage: 2.7 Volts

AGP Voltage: Default *unless you have ATI (9200 or 9600) or NVIDIA (5200 or 5700) then 1.6 Volts suggested!*

All other settings are motherboards defaults

Then please test them one at a time with http://www.memtest.org and let’s make sure it's not some other issue! I would run the test for at least 2-3 passes to be sure!

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