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RMA requested for CMX1024-3200C2PT


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I bought a twin pack of CMX1024-3200C2PT modules and have experienced errors. Testing revealed that only one module was disbehaving. I have already followed the advice given to other consumers who are reporting errors with these modules; namely updating the BIOS, setting the voltage to 2.7x, using 2.5 CAS latency because it's AMD, etc.


Please will you allow me to return the one faulty module? If I have to send both back I'll have to resort to a basic 512Mb module to run my PC.



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using 2.5 CAS latency because it's AMD
THIS IS WRONG. Athlon64 - CAS 2.0, AthlonXP = CAS 2.5.


Test one stick at a time in each slot using Memtest86+ and these settings:


CAS Latency (tCL): 2

RAS to CAS Delay (tRCD): 3

Row Precharge (tRP): 3

Active to Precharge Delay (tRAS): 6


Memory Voltage: 2.7-2.8 Volts (Warrantied up to, but not over, 2.90 volts)

All other settings to defaults.


Source: Corsair XMS Qualification and Testing Information


What actual errors are you getting with each stick by itself, and in which (if not all) slots?

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I will try your settings tomorrow, but I will describe the problems I am experiencing. The motherboard doesn't POST should any single module be plugged into Bank 1, it has to be Bank 0. I've tested this with guaranteed working modules, also.


When plugged into Bank 0, the first CMX1024-3200C2PT module works fine and the Memtest program doesn't detect any problems. When I replace it with the second CMX1024-3200C2PT, there are around 400+ errors reported.


Booting with both modules together yields a highly unstable Windows system.


Using CL2.5 rather than CL2 - does that really cause errors? Sure the addition .5 would slow things down somewhat and consequently reduce any potential errors?

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  • Corsair Employees
Please make sure that you have the latest Bios and then load setup/optimized defaults and then set the Dim Voltage to 2.7X volts (+.2 Volts W/Giga-Byte) and then set the timings manually to the tested settings for the specific module you have, XMS2700C2 Cass 2-3-3-6 for example or if you have Value Select "BY SPD" and then test the module/'s one at a time with http://www.memtest.org! If you still get errors, please follow the link in my signature “I think I have a bad part!” and we will be happy to replace them or it! However, if you get errors with both modules that would suggest some other problem and I would test them in another system or MB to be sure.
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