Athlon XP to XP Mobile Guide

[daniel_owen_uk]

Plus it needs to rather hot

Halford sell conductive paint but call it windscreen heater repair (same thing though).

[Ben Rogers]

I done this on 2 1700+s and a 2500+ barton that had a locked multi. It didn't unlock the multi to be able to change in the BIOS, but I had the ability to change it in Windows using CPUMSR. Oh yeah, this only works on chipsets that arean't nForce2.

You can only change the multiplier downwards of what the L6 bridges say the default is, this is also the boot multi and max settable so if you leave them it'll be 11 cos all XPs have the same L6 bridges by default cos on desktop chips the BIOS will use the L3s to set the default multi.

I cut the L6 bridges on one of my 1700s with a knife and accidently ended up with a multiplier of 22x I think and I couldn't change it because I had flaked bridges I needed to join off...didn't even need to the 1700s into a mobile but I wanted to be able to change the multi within windows.

It works great, but it won't help any overclock purely by modding it into a mobile if that's what anyone's thinking - the only reason for doing this is to be able to change the multiplier within windows as far as Im aware.

[Bboy_Jon]

how far can the multi be changed?

so this works for bartons too? does walmart sell conductive paint?

do i only have to connect those 2 bridges or what? must i do somethin else for this to work?

[pre]

Changing the multiplier adjust isnt exactly the same as changing the silicon to make a CPU more overclockable. Fair enough if you have a locked CPU or PC2700 but otherwise did I miss the point?

[Ben Rogers]

People started doing this due to the existance of mobos that offer no way of changing the multiplier within the BIOS and it turned out to usually allow multi locked XPs to have their multiplier changed.

First of all you need to join the bridge - I used a pencil and drew around the hole between the bridge AMD put there, this didn't work the first time and required a few layers of graphite to get the connection made. It kind of worked the first time but I got BSODs saying hardware malfunction due to the connection being dodgy and sometimes not being totally connected.

The multi can be changed downwards from what the L6 bridges say is it's default. So if you cut/join them to set the default to 15x, you can set below 15x, to 6 I think is the lowest. If you leave the L6s how they are, you can only set below 11x.

The mobile mod works for all socket a athlons, including tbirds and durons, xps, bartons...though the older ones have to have a different bridge joined.

When the bridge is joined the BIOS should recognise whatever CPU it is as an 'Unknown AMD at xxxx MHz'. After this you need to download a program to change it, I used CPU MSR. There's an FAQ on there somewhere but I can never find the link.

Just found a link saying what to do better than I can explain it.

http://www.ocworkbench.com/2004/guid...rtonwk43-2.htm

[Bboy_Jon]

seems to complicated heh

[Bboy_Jon]

ey umm so will this work for me? i think i have one of the super locked 3000+ bartons (got it in june this year) so could i still get my multiplier unlocked?

can i do this with a pencil? anything thats really really cheap that i can use?

[Captain Fizz]

ey umm so will this work for me? i think i have one of the super locked 3000+ bartons (got it in june this year) so could i still get my multiplier unlocked?

The mobile mod works for all socket a athlons, including tbirds and durons, xps, bartons...though the older ones have to have a different bridge joined.

can i do this with a pencil? anything thats really really cheap that i can use?

..... I used a pencil and drew around the hole between the bridge AMD put there, this didn't work the first time and required a few layers of graphite to get the connection made......

I'd read the link that Ben provided Bboy_Jon, and this thread.

[Bboy_Jon]

so it would even work with the sooper locked ones like mine, and id end up having a mobile 3000?

id be able to hit a higher oc right? since my fsb wont be stable past 217? so i can just increase the multiplier?

[Bruno]

Head to Halfords and get the 'rear window defogger repair kit', it's about £5 and it's conductive paint. Worked for me (the paint, not the XP to XP-M, it was for a palamino).