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ASRock / Asus Memtest fail / linux fail / Vista Fail


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Hi there


I have the following memory models VS512MB400C3 X 2


tested on the following systems with defualt bios options set.


ASrock K7Vm4

AMD XP 2000

Nvidia FX 5200

550 watt power supply OCZ



AMD XP 2600

Radion 9800 All-in-Wonder.

650 watt Power supply OCZ


Memory tested in the following ways


Ran memtest from dos bootable disk - Failed

Windows Vista Mem test - Failed

Run Memtest from USB Bootable - Failed


Windows Vista crashes randomly when trying to do more than one thing at a time.


Linux loads with memory errors and randolmly locks up


windows XP BSODS randomly.


Have tryed fresh installs 0f all OS's


Have treyed default bios setting with and with out cashing.


Tryed seting the Cas timings.


Still problems on both systems with the ram.


Tested some OCZ gold in both systems and it works perfectly fine with out any ajustments.


I live in the UK as well (just to add)



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  • Corsair Employees

With both of these systems you would need to manually configure the BIOS settings to like whats bellow, can you tell me the bios settings you have set for both CPU and memory and any performance settings that you may have set?

With a 333 FSB CPU and A8N8X-E MB:

CPU Freq: 166 MHz

System Performance: User Define

Memory Frequency: 100%

Dim Voltage to 2.7 Volts

Resulting Frequency: 166MHz

Memory Timings: Manual/User Define

SDRAM CAS Latency: 2.5T

SDRAM RAS to CAS Delay (tRCD): 3T

SDRAM Row Precharge (tRP): 3T

SDRAM Active to Precharge Delay (tRAS): 7T

Then test the modules one at a time with http://www.memtest.org.

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The defualts were set to normal (not fast)


Cas 2.5 / 3 / 3 / 7 lantency


Dim voltage was set to auto dectet (CPUZ decteted at = 2.7 v)


166 MHZ (jumper set on the asrock) Bios set on the asus


Both sicks fail aprox 25% way through test on both bords.


The ram seemed to degrade over time.

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