Striker Extreme + 4x Corsair CM2X1024-6400C4

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: