Dear Lorenzo,
Thank you for contacting MSI Technical Support.
As your memory is PC5400 DDR2 667, its frequency is very high. When you set CPU and memory synchronization (you get CPU and memory at 1:1) in BIOS, CPU (it could not work at FSB1332 [667/2) and other peripherals could not bear to such overclocking. We suggest you let CPU and memory work at 5: 4 to get stable performance. After all, stable PC performance is most important.
The overclocking ability is much related with your hardware configurations. There are several methods you could overclock, we list them below for your reference.
I) MSI software "Core Center" , you can try to download from the link:
http://www.msi.com.tw/program/suppor...ist.php?kind=1 . In the left sub-menu, when you choose "Auto", it would start testing the maximal CPU overclocking level. The CPU FSB will automatically increase untill the PC reboots. After reboot, CPU would run at the maximal value. You could also click "default" to restore the default value.
II) Manually overclock in BIOS. You can adjust the CPU FSB Frequency (System Clock Mode) and the CPU Voltage little by little for stable performance.
Thank you for supporting MSI product. Please feel free to let us know if you still have any further issues or inquiries.
Best regards,
MSI Technical Support