Above 12.5 on 4bit multiplier boards

[DivideBYZero]

I read this at oc-forums:

We are referring to "popping" the 5th L3 bridge on a Thoroughbred CPU to add 8X to the current 5.5X-12.5X multis.

For example, if I set 7X in my BIOS the CPU would end up at 15X.
7+8=15..... See?

Anyone confirm this is true? Also, anyone actually tried the 9v battery technique on the L3? Any tips on knifing the L3?

 

[DivideBYZero]

bump

 

[DivideBYZero]

Originally posted by: DivideBYZero
bump

Cmon guys

 

[TerryMathews]

Originally posted by: DivideBYZero
I read this at oc-forums:

We are referring to "popping" the 5th L3 bridge on a Thoroughbred CPU to add 8X to the current 5.5X-12.5X multis.

For example, if I set 7X in my BIOS the CPU would end up at 15X.
7+8=15..... See?

Anyone confirm this is true? Also, anyone actually tried the 9v battery technique on the L3? Any tips on knifing the L3?

Yes, that is how it works. If your board can't control the 5th bit, it leaves it alone. To set the desired multiplier then, you should set 8x less than you want.

Use a 9V battery, two pieces of wire, and a pair of needles to pop the bridges. Cutting is difficult.

 

[ErikaeanLogic]

Originally posted by: TerryMathews

Originally posted by: DivideBYZero
I read this at oc-forums:

We are referring to "popping" the 5th L3 bridge on a Thoroughbred CPU to add 8X to the current 5.5X-12.5X multis.

For example, if I set 7X in my BIOS the CPU would end up at 15X.
7+8=15..... See?

Anyone confirm this is true? Also, anyone actually tried the 9v battery technique on the L3? Any tips on knifing the L3?

Yes, that is how it works. If your board can't control the 5th bit, it leaves it alone. To set the desired multiplier then, you should set 8x less than you want.

Use a 9V battery, two pieces of wire, and a pair of needles to pop the bridges. Cutting is difficult.

can you elaborate on the "9V battery" technique? linky?

 

[sirfergy]

I did the cutting of the 5th bridge so I could run my XP 1800+ @ 1.92ghz on my old Asus A7V

 

[osage]

the 9 volt battery will only work if it is a good fresh one...I think a better way is to use the 5v output from a spare power supply, you get a lot more amps this way.


this works very well and is quick, poof and the bridge is gone, just a tiny little spark and a small pop sound. much easier than cutting..

2 needles, 2 pieces of wire a foot long or so, 2 alligator clips, or use electrical tape to connect the wires to the needles. the other end of the wires go into the connector on the PSU blk and yellow I think, check this to be sure I haven't done this for 6-8 months.. just touch one needle to each end of the bridge and it burns it out just like a small fuse would pop due to too much voltage.

 

[DivideBYZero]

Originally posted by: osage
the 9 volt battery will only work if it is a good fresh one...I think a better way is to use the 5v output from a spare power supply, you get a lot more amps this way.


this works very well and is quick, poof and the bridge is gone, just a tiny little spark and a small pop sound. much easier than cutting..

2 needles, 2 pieces of wire a foot long or so, 2 alligator clips, or use electrical tape to connect the wires to the needles. the other end of the wires go into the connector on the PSU blk and yellow I think, check this to be sure I haven't done this for 6-8 months.. just touch one needle to each end of the bridge and it burns it out just like a small fuse would pop due to too much voltage.

Cheers all. Thanks for the confirmation of the 5th L3 Terry, nice one.

Still bricking it about the voltage pop method but lets see.....