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Second CMX512-3200C2PT failure in 5 days.

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My system blue screens 0x50. Ran Memtest86+ and errors are detected at start test #1.


Purchased: Mar. 10, 2005




CPU: AMD Sempron 2800

HDD: Hitachi 80g SATAII

CDROM: Toshiba 16x DVD


System settings: Timing Auto by SPD

CAS Latency 2.5

Bank Interleave Disabled

Trp 5T

Tras 7T

Trcd 5T

Burst 4

Write recovery 3T



System Perf: Expert

CPU Timing Fast

Dram Command Rate 2T

Current FSB 166

Current Freq 200

VDimm 2.65v

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In your list you showed your RAM running at a frequency of 200Mhz and your CPU running at 166. If you run the RAM out of sync with the CPU many errors will occur and it will not be stable. Please adjust your memory to 166Mhz as well and change the voltage to 2.75.


After you have done this, please test the memory again, one stick at a time with memtest.

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FSB and mem speed need to be in sync. Try the correct settings:


Current FSB 166

Current Freq 166


CAS Latency (tCL): 2.5

RAS to CAS Delay (tRCD): 3

Row Precharge (tRP): 3

Active to Precharge Delay (tRAS): 6


Memory Voltage: 2.75 Volts

All other settings to defaults.

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I reset the Current Freq to 166 and ram memtest86+ again with the same result immediate errors test#1


I am unable to change the VDimm value on the MB.


I changed the Memory timings as recommended:Freq - 166, tCKL - 2.5, tRCD - 3, tRP - 3, tRAS - 6 the system would not successfully complete the memory test at post. I had to clear CMOS to get the system back.

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