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Cmx512-3200pt + A7n8x Deluxe


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I have a Corsair XMS 512MB PC3200 v2.1 stick. I went to Monarch and found the timings were 3-3-3-8. The FSB on the MOBO is set to 333/400. The ram slot is the one all the way to the left (BLACK ONE).


When I first booted up, the timings were 2-3-3-7 but I changed it to SPD, User defined, and then 3-3-3-8 (from the bottom to the top).


Reboot, nothing. So I have to open the case and take out the CMOS BATTERY and change the jumper...


BTW I'm on an AMD Athlon XP 2500+ (166x11) = 1.8 ghz


I set it to 2.5-3-3-7 and it's somewhat stable but there are still some crashes (Video card is ZALMANIZED 9700 PRO, CPU is PRIME STABLE AXP 2500+). But I just want to know WHAT the REAL timings are supposed to be and WHY they don't work on the A7N8X DELUXE.


Sometimes I crash in games... Maybe it's not the ram...


I want to do a memtest on it but I just want to know one thing..


WHAT TIMINGS should I use for a memtest? the default are 3-3-3-8 but the only stable i could get is 2.5-3-3-7...???


<-- Confused? I have reset the cmos about 15 times.

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  • Corsair Employee

With a 333 FSB CPU you will need to set the memory frequency at DDR333 as well, please try these settings and test the modules one at a time with http://www.memtest.org to be sure.

CPU Freq: 166 MHz

Ssystem Performance: User Define

Memory Frequency: 100%

Dim Voltage to 2.7 Volts

Resulting Frequency: 166MHz

SDRAM CAS Latency: 3T

SDRAM RAS to CAS Delay (tRCD): 3T

SDRAM Row Precharge (tRP): 3T

SDRAM Active to Precharge Delay (tRAS): 8T

As long as you have CMX___-3200 modules, if not please let me know the part#

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CAS Latency: 3

RAS to CAS Delay (tRCD): 3

Row Precharge (tRP): 3

Active to Precharge Delay (tRAS): 8


memory voltage: 2.7x or 2.8 volts


set them to 166 Mhz to be in sync with your FSB.


[EDIT]Damn, beaten to the punch![/EDIT]

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  • Corsair Employee

Lets try replacing your modules

Please follow the directions under "I think I have a bad module" under this forum or if you have trouble, Please send us a email with a copy of the form or all of your info name address and phone# and the Module part# and copy the link to this post and email it to Rma@corsairmemory.com.

If after 1 day or 24 hours excluding weekends you do not get the rma please email the same to warranty@corsairmemory.com and we will help to resolve it.

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