Athlon XP-M To SMP (Cut L5) - Adjust multipliers via L3 bridges?

[helpme]

I'm thinking about buying a couple Athlon XP-Ms and cutting their L5 bridges to make them SMP enabled. Has anybody Done/Heard/Read if the L3 bridges will still adjust the multiplier of the chip after this has been done?

When you change it from an XP-M to a MP, does it become 'superlocked' and require the pin mod?

I would be replacing my dual 1800+ MPs with two 2400+s probably clocked at 2800+ speeds on a Tyan 2466-4N

 

[myocardia]

Um, if you're only wanting to overclock that far, why overclock at all? You want to take a chance on ruining a $93 processor that comes with no heatsink, to try to make it perform the same as a Barton 2800 that only costs $113? And for $8 more each, you can get the retail XP2800: link, that has free shipping and a 3 year warranty. You did realize that once you pay for the price of 2 decent heatsinks, plus $4 shipping on each, that you've saved ~$10, by buying 2 mobiles + 2 heatsinks, and then you have to take the chance of destroying one or both of the processors trying to modify them. That makes no sense to me. The only reason anyone is buying mobile Bartons and modifying them to enable SMP is so they can have a dual 2.3-2.4ghz SMP setup, because the Athlon MP's don't overclock well at all, so it's impossible to build a 2.3-2.4ghz Athlon MP-based setup.

 

[helpme]

Basically I want Barton MPs 2800+ chips, but for as far as I can get from the 177$ each price. Since the mobiles will probably make it to the 2800+ speed, why pay for the 2800+XPs?

I already have decient heatsinks, so that shouldn't matter.

I just don't want to have to do the pin mod to set the mults.

 

[helpme]

Also, if I bought XPs, and they were 'superlocked' I would have to do the pin mod, which is what I don't want to do. I'd have to change the multiplier because the MPX boards are all 266mhz bus.

The 2400+ mobiles cost 77$

 

[Mingon]

you need to;
(1) cut the 4th l5 bridge to disable mobile working
(2) mod the bridges for the desired multiplier or better still use conductive pen on the pins to get 17x or 18x multiplier .

As for getting 2800+ chips in a word DONT! some are now multiplier locked which when you are only able to run 266fsb is a major problem.
The multiplier chip already have the 5th LV5 bridge connected and as such will recognise as MP enabled chips as soon as you cut the 4th bridge.
If you need anymore info PM me I have 2 x 2500+mp chips at 17 x 138 (2.35ghz) in my machine. They will run higher, but I need to change the multiplier to 18x as I have a 64bit scsi card and it doesnt like out of spec bus signals.

 

[helpme]

What motherboard are you using for this?

 

[myocardia]

I pin modded my daughter's cpu for voltage in roughly 60 seconds, and it was the first time in my life I had ever done one. Of course, I did go spend $10 on a rear window defogger repair kit form AutoZone. Besides, I would have sworn that even with the mobile Barton, you still had to do the pin mod to raise the multi, since your motherboard shouldn't support raising multipliers. Does it?

 

[Mingon]

The msi k7d that I use allows adjustments in the bios of upto 12.5x to go further it is easier to pin mod than brdige mod and safer.

 

[myocardia]

Originally posted by: Mingon
The msi k7d that I use allows adjustments in the bios of upto 12.5x to go further it is easier to pin mod than brdige mod and safer.

No doubt! It's completely impossible to destroy a chip with a pin mod. If you get some of the (insert whatever conductive material you'll be using here) somewhere it shouldn't be, it costs you nothing if you notice it before it dries, and $3 if you let it dry, because that's how much a pint of acetone costs. Acetone will remove the defroster repair compound, anyway. I'm not sure about conductive pen, but it probably would remove that too. Anyway, if you screw up a bridge mod, it costs you whatever the chip you buy to replace the one that you just turned into a keychain costs.

 

[helpme]

Originally posted by: myocardia
I pin modded my daughter's cpu for voltage in roughly 60 seconds, and it was the first time in my life I had ever done one. Of course, I did go spend $10 on a rear window defogger repair kit form AutoZone. Besides, I would have sworn that even with the mobile Barton, you still had to do the pin mod to raise the multi, since your motherboard shouldn't support raising multipliers. Does it?

It almost sounds like you're talking about the bridge mod when refering to the pin mod. The pin mod refers to using little pieces of wire to connect different pins on the bottom of the processor. Usually placing them in the socket before placing the chip in the socket. Just seems like it would be too easy to short the wrong pins out when putting it in the socket

The bridge mod is the one I would like to do, cutting or filling in bridges with conductive material.

 

[Mingon]

the pin mod can be done with wires or conductive trace pens, oersonally I dont like small wire floating around inside a computer so I prefer using the pen.

 

[helpme]

How did you use the conductive pen to connect the pins on the bottom of the processor? I understand how you can use it to connect bridges on the top of the packaging, but pins on the bottoms?

 

[Mingon]

you just draw a line between the relevant pins, ocinside.de iirc has a walkthrough of pins