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cmx512 4400c25 need help.

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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;

TwinX512 Or Twinx1024-4400C25

Genie BIOS/DRAM Configuration

DRAM Frequency Set: 2:1 or 400MHz or 200 (if option are 133/166/200)

Command Per Clock: 2T

SDRAM CAS Latency: 2.5T

SDRAM RAS to CAS Delay (tRCD): 4T

SDRAM Row Precharge (tRP): 4T

SDRAM Active to Precharge Delay (tRAS): 8T

Genie BIOS

Clock Spread Spectrum: Enabled

CPU Freq: 200 or 250

CPU/DRAM ratio: 1:1 or 100%

HT or LDT Frequency: 3X

DRAM Voltage 2.75 volts

AGP Voltage: Default *unless you have ATI 9200 or 9600 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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  • Corsair Employees
A8V is a socket 939, and they have no problem running at 2 or even 4 modules; socket 754 may not reach 250, but you can try it by setting the HT frequency to 3X. Please let me know how you make out.
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