If you are going insane with your ASUS Striker Extreme motherboard in combination with four Corsair CM2X1024-6400 CL4 DDR2 PC800 memory modules this might help you.
With only two 1 GB modules (2 GB total) you can run it at recommended timings, voltage and frequency (everything should be set manually in BIOS):
- CAS-Latency: 4
- RAS to CAS (tRCD): 4
- RAS Precharge (tRP) 4
- Tras: 12
- Trc (Bank Cycle Time): 22
- Command Rate/Command Per Clock (CMD): 2T
- Voltage: 2.1V
- Frequency (effective): 800 MHz
But with four 1 GB modules (4 GB total) and the settings above your system will be instable (random bluescreens) and Memtest86+ (v.4.0) will show errors during Test 4 and 5.
This is a phenomenon of the ASUS Striker Extreme and the ASUS P5N32-E SLI Plus motherboards. Somehow they cannot handle 4 memory modules with these settings.
To get rid of the bluescreens and the memory errors reported by Memtest86+ (v.4.0) you have to set the timings to AUTO and the frequency to 666 MHz:
- CAS-Latency: AUTO
- RAS to CAS (tRCD): AUTO
- RAS Precharge (tRP) AUTO
- Tras: AUTO
- Trc (Bank Cycle Time): AUTO
- Command Rate/Command Per Clock (CMD): AUTO
- Voltage: 2.1V
- Frequency (effective): 666 MHz
Now run Memtest86+ (v.4.0) again and you should not see any errors anymore thus giving you finally a stable system.
Your motherboard will choose other timings instead of the recommended ones (see CPU-Z results below) but that is something you have to live with:
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