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Fixing OC BSODs on the ASUS A8N-VM CSM mobo?

Last response: in Overclocking
May 11, 2009 4:05:34 AM

My motherboard -- the ASUS A8N-VM CSM -- has been known to not cater to overclocking very well. Nevertheless, I changed the CPU FSB Frequency in my BIOS, the "AI Overclocking" was set to AUTO -- so I changed it to MANUAL (which gave me a new menu item called CPU FSB Frequency). Unfortunately, the value is limited to a maximum of 240 -- giving me only a fraction of a chance to overclock.

I've flashed my BIOS quite a few times, trying to see if different recent or older versions would help "unlock" the value. This didn't end up working, however. Though, after flashing, I also get a new "CMOS checksum bad" error on bootup which I can skip by and still boot up into Windows, so I'm guessing perhaps the BIOS didn't install correctly or something. (Though when I check my BIOS flash utility, it says it updated to the version I selected.) Oddly enough, the message hasn't popped up again since.

I've tried using the nTune software since my motherboard runs on the nForce 410 chipset -- so I thought it might be appropriate. However, nTune support is apparently "N/A" for my particular board. I ignored this and installed the software anyways, but -- of course -- it didn't end up working.

Another software overclocking program I've tried is ClockGen, the program itself seems to work fine, but if I push the processor a little more, my system BSODs. I think I read somewhere that increasing the voltage to the CPU can prevent this and allow me to overclock further. So far, heat hasn't been an issue -- the CPU stays at around 25 to 30 degrees C.

I'm curious as to any solutions for getting around this. Any suggestions?
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May 12, 2009 7:12:04 AM

Unfortunately, like you said, your motherboard isn't suited to overclocking. I'd rather you get a more suitable motherboard. Hopefully someone else here can suggest something.
May 12, 2009 11:28:11 AM

I have the same MB and the limit to OC the FSB is 240...
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May 12, 2009 10:48:58 PM

nocteratus said:
I have the same MB and the limit to OC the FSB is 240...

Were you able to use a software overclocking program (such as ClockGen) to overclock your processor past that value?
May 13, 2009 3:40:19 AM

In this case, the 'limit' is the nForce 410 chipset, which (Im assuming here, have not researched) is incapable of exceeding a bus speed of 240 Mhz.

The first rule of overclocking is to purchase quality components that are able to exceed specifications.