Problems with BIOS and motherboard

Bumhucker · 14 Nov 2006 at 19:45

I'm trying to do my first overclock at the moment and I'm unable to change the DDR voltage in BIOS. I can see it in BIOS but the text is light blue, as opposed to yellow, and I cannot change it.

Anyone know why this could be?

One suggestion, and this is a problem anyway, is that I'm not sure what motherboard I have.

This is my Shuttle (here) and it says the mainboard is the FN45. An FN45 manual also came with the Shuttle when I bought it. The problem is that I have downloaded CPU-Z and it says the mainboard's model is FN41SP.

Now, a few days ago I updated BIOS successfully thinking I had the FN45. So when I restart the computer it shows my BIOS version to be FN45s00w. If I do have the FN41SP mainboard, could this incorrect BIOS version be causing the inability to change the RAM voltage?

Bumhucker · 16 Nov 2006 at 10:20

No one can help me? Maybe this thread is better off in the SFF forum.

Buffalo2102 · 16 Nov 2006 at 16:38

Have you looked at the MB itself? See here here

As for the DDR voltage, you may have to change the "System Performance" option to "Expert" under "Advanced Chipset Features" before you can change this - this is just a guess from looking at the manual so may not be correct. Apologies if you've already tried it.

Minstadave · 16 Nov 2006 at 19:06

Shuttle locked the Vdimm options because changing Vdimm meant you killed the motherboard on the FN45, I know because I killed one doing it.

Bumhucker · 16 Nov 2006 at 20:03

Buffalo2102 said:
Have you looked at the MB itself? See here here

As for the DDR voltage, you may have to change the "System Performance" option to "Expert" under "Advanced Chipset Features" before you can change this - this is just a guess from looking at the manual so may not be correct. Apologies if you've already tried it.

Thanks for the advice. I tried changing System Performance to Expert and it only made the RAM timings available for change.

Looking into the box I found the MB has FN41G/FN45 V2.0 written on it. Here's a website showing it:

http://www.amdboard.com/shuttle_sn45g.html

On this website it says:

"The FN45...design does not alter all that much from previous XPC boards as it is based around the FN41G motherboard."

That seems to suggest it is primarily the FN45 board and should use that BIOS.

Minstadave said:
Shuttle locked the Vdimm options because changing Vdimm meant you killed the motherboard on the FN45, I know because I killed one doing it.

Ah! So does that mean it's virtually impossible to do a decent overclock?