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Asus Z71 dipswitch settings?

Posted: Fri Nov 04, 2005 7:46 am
by thebugeyedcow
I found this and was wondering if anyone had played with them to see if this actualy works with the m 770 chipset, or even at all. They were useing a Z71 A chassis. As far as I can tell, they are also on the Z71 V.
I had SiSandra on the drive, so I ran it to start to check things out. Hello - what's this?

I find it's running at 2.13 GHz, not 1.6 GHz.

I pick up the CPU box and confirm it's a Pentium 725 - 1.6 GHz, SL7EG. Hmmmm....

I load CPU Cool (a VERY nice notebook utility HERE) and confirm again that it's running at 2.13 GHz; I right-click My Computer and confirm that it is indeed a 1.6 GHz CPU.

I conclude that this is a 400 MHz part running at 533 MHz (16 * 100 = 1.6 GHz; 16 * 133 = 2.128 GHz). OK - how did this happen?? Let's take a look at the CPU area for some clues:

I noticed this little dipswitch marked "SW3" before and wondered about it - now I had a very strong hunch - this sets FSBs. A quick call to ASUS confirmed it.

Selecting FSBs
This harkens back to some early ASUS motherboards that used dipswitch settings to set FSBs. In this case, it's up for 400 FSB and down for 533 FSB:

ASUS ships the notebook set for 533 MHz. Using SW3 means that all peripherals are running at spec - not overclocked.
The Pentium M 725 is a GREAT overclocking chip - I will show some tests that I performed at both 1.6 and 2.13 GHz (a 33% overclock), and I have to say Intel gave us nice present. Considering that the 2.13 GHz part costs about $400 more than the 1.6, I think you get the drift of why I like this notebook a lot.

Posted: Sun Dec 18, 2005 6:27 pm
by DMB2000uk
I know this overclocking method has been used before with pentium M's, switching the FSB to 533 on a 400 FSB rated chip.

Though for people to get it to work they've had to use a small wire to ground some of the pin sockets, known as pin modding!

The additional jumpers are a handy touch! = no fiddiling about with small wires!

Dan