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4 x CMX256A-3200C2 on GA-7N400 pro2 (rev2)?

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Im having problems running 4 sticks of the 256 (2 x Twinx) on my GA-7N400 pro2 motherboard. One set was purchased a year or so ago (v1.2), the other set is the same type but v4.2 (I think, thats what I am running with atm so I cant check to be sure). The problem is that I get frequent crashes to desktop in Windows XP sp2 or random restarts. Is it something as simple as voltage setting? I have it at stock at 166 with a athlon xp 2500+, so no real overclocking.


The system runs fine with the new twinx set in dimm 1+3 and so does the old set. But I get the crashes, etc. with new in dimm 1+3 and old in 2+4, and with old in 1+3 and new in 2+4.


I hope this is enough info for you to go on and thanks in advance

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  • Corsair Employees

Please try and set these timings and then test the system with http://www.memtest.org.

CPU Freq: 166 MHz

Memory Frequency: 100%

Dim Voltage to 2.7 Volts (+.2 Volts)

Resulting Frequency: 166MHz

SDRAM CAS Latency: 2.5T

SDRAM RAS to CAS Delay (tRCD): 3T

SDRAM Row Precharge (tRP): 3T

SDRAM Active to Precharge Delay (tRAS): 7T

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