Idiot-proof Guide to Unlocking Barton Multipliers?

[FDTzeng]

I have the 2500+ but want 13x and above multipliers. All I know is "cut the last L5 bridge." How? Were? With what? Can anyone explain please?

I've also heard something about a "wire trick" but I dunno if that applies here.

Athlon XP 2500+ @ 2.2GHz (12.5x177), Volcano 7 w/Smart Fan2, A7N8X, Kingston HyperX PC3000 512MB @177MHz, Radeon 9700Pro, SB Live 5.1

 

[unoc]

Have you tried to simply change the multiplier within the BIOS setting ?
I have an XP 2700+ (not-barton) on a A7N8X dlx mobo and the CPU came from AMD, totally unlocked. It can run with any multiplier among that allowed in the bios (a lot) with the only limit to not surpass about 2500 MHz of real clock frequency, to avoid stability problems.

______________________
<font color=red>you don't need a faster computer, you need faster fingers for your hand</font color=red>

 

[umheint0]

You have access to the higher multipliers already with chips above 2100 (with 266 fsb). With the ones that have 333 FSB (non-barton) start at 2400, and the Bartons start with the 2700. If you have anything less than what I specified, you DON'T have access to the higher multipliers unless the last L5 is cut. If you have anything more, you DON'T have access to the lower multipliers, unless you fill in the last L5 bridge.

You either get the higher or lower multipliers, not both. The switch-over point is 12.5/13.

umheint0's phat setup --> <A HREF="http://home.cc.umanitoba.ca/~umheint0/system.html" target="_new">http://home.cc.umanitoba.ca/~umheint0/system.html</A><--

 

[FDTzeng]

I have tried just choosing the other multipliers (like 13x and above) just thru the BIOS. No effect. So is there a guid eout there for doing this?

Athlon XP 2500+ @ 2.2GHz (12.5x177), Volcano 7 w/Smart Fan2, A7N8X, Kingston HyperX PC3000 512MB @177MHz, Radeon 9700Pro, SB Live 5.1

 

[umheint0]

You need to cut the 5th L3 bridge. I would imagine that using an Xacto knife or other sharp tool would work, though this definitely voids any warranty you might have had. I looked for some sites, but couldn't get any for you (though I didn't look as hard as you probably will).

umheint0's phat setup --> <A HREF="http://home.cc.umanitoba.ca/~umheint0/system.html" target="_new">http://home.cc.umanitoba.ca/~umheint0/system.html</A><--

 

[phsstpok]

You'll find the wire tricks at this link (lower middle of page).

<A HREF="http://www.beachlink.com/candjac/Workarounds.htm" target="_new">http://www.beachlink.com/candjac/Workarounds.htm</A>

Connecting pin AJ27 to VCore (pin AH26 is good) pulls the 8x bit HI (similar to cutting the 5th L3 bridge). This is the mod you want.

Connecting pin AJ27 to Ground (pin AH28 is good) does the opposite. It pulls the 8x bit LO (similar to connecting the 5th L3 bridge).

There are many ways to make the connection. Paint between the pins with conductive paint. Use a wire loop around the pins. Use a fine wire thread to connect the two corresponding holes in the socket (this is my favorite). Solder the corresponding pins on the back of the motherboard. In which case a 100 ohm resistor should be used. You can add switches too to refine the last mod.

If you want to cut the bridges there are two ways (Tbred + Barton only).

Sharp knife/exacto/razor blade. A firm cut will do it. You don't want to go too deep.

Use the 9V battery trick (I haven't had the guts to do this one). The way I understand it if you connect each terminal of a 9V battery across the desired bridge it will burn out the connection, like a blown fuse. I'm told you can see a light flash. (Sounds crazy to me too. Just passing it on).



<b>99% is great, unless you are talking about system stability</b><P ID="edit"><FONT SIZE=-1><EM>Edited by phsstpok on 05/10/03 10:41 PM.</EM></FONT></P>

 

[FDTzeng]

Okay Ive also read something about how this trick allows me access to a diff "set" of multipliers, specifically something like 13-above. Does this mean that if i want to go back down to 12.5-below i would have to revserse this trick?

Or (this would be preferable) does this trick allow access to ALL multipliers? (like 5-25 or whatever they happen to be)

Athlon XP 2500+ @ 2.2GHz (12.5x177), Volcano 7 w/Smart Fan2, A7N8X, Kingston HyperX PC3000 512MB @177MHz, Radeon 9700Pro, SB Live 5.1

 

[phsstpok]

The wire mods are overrides. They override the CPU default and the BIOS options. They force one or more multiplier bits one way or the other. In your case, with the 8x bit you get either the high or low multipliers, one or the other.

The bridge mods are more flexible. This mod just changes the default. Your motherboard can still change the multipliers the same way. It all depends on what your mobo is capable of. With A7N8X it's high or low. With Abit NF7-S all the multipliers are available (which means no mod is necessary). I just now heard the same about the Leadtek nForce2 boards.

And yes, if you use the wire mod to get multipliers above 12.5x then you have to remove the mod to use 5x-12.5x with your mobo.

<b>99% is great, unless you are talking about system stability</b>

 

[FDTzeng]

wait wait so if i wanted to reverse the bridge mod then Id have to so some conductive material to reconnect the bridge? Sounds like the wire trick is more reversible?

Athlon XP 2500+ @ 2.2GHz (12.5x177), Volcano 7 w/Smart Fan2, A7N8X, Kingston HyperX PC3000 512MB @177MHz, Radeon 9700Pro, SB Live 5.1

 

[FDTzeng]

Oh also ive been reading that forum link and "abb" says that the wire trick only works for TBreds? (he seems like he knows what hes doing). True or False?

Oh and Im using the 1003 BIOS on a rev 1.06 board, shouldnt have issues right?

Athlon XP 2500+ @ 2.2GHz (12.5x177), Volcano 7 w/Smart Fan2, A7N8X, Kingston HyperX PC3000 512MB @177MHz, Radeon 9700Pro, SB Live 5.1

 

[phsstpok]

Yes, you would have to fill the cuts and then use conductive paint to reverse the bridge mods.

<b>99% is great, unless you are talking about system stability</b>

 

[phsstpok]

Oh also ive been reading that forum link and "abb" says that the wire trick only works for TBreds? (he seems like he knows what hes doing). True or False?

To which forum link are referring?

Duron/Tbirds don't have an 8x circuit. The wire mods work with Palominos, XPs and MPs. Works with Tbreds. Don't see why it wouldn't work with Barton.

The XP3000+ has a high multiplier so there must be an 8x circuit in Barton. I don't own a Barton so I can't confirm it but it must be there.

I'll see if I can locate some Barton success stories...


<b>99% is great, unless you are talking about system stability</b>

 

[Ryan_Plus_One]

Hey Zeng, did you ever get the mod to work or try it at all? I need higher multi's!