Help w/ L6, L3, L4...

[Guest]

I have a 1.3 GHz / 200 bus AXIA TBird (which uses a 12.5 multiplier x 105 bus by default). I'm trying to drop the multiplier down by closing traces, but not cutting traces. According to a couple articles I have read, I should be able to do this, but I'm not sure what needs to be done with the L3 & L4 bridges...

The chip has:
L7 - . | | : | | (= default voltage)
L6 - . : : | | (>= 12.5x)
L5 - . |
L4 - . | : | : (= ?)
L3 - . : | : | (= ?)
L2 - . | |
L1 - . | | | | (= unlocked by default)

What do I need to change to lower the multipler? From what I've read, I can change L6 to all closed to get an 11x multiplier, but the machine won't boot when I try this (I know the chip will run at 11x133 b/c I have run it at that on another motherboard). I also tried closing all L6, all L3, and all L4 together, but that didn't work either.

I want to run this at 133 bus, but the MSI K7T Turbo changes the FSB by jumper (100 / 133, then can partially change within the BIOS - at 100, 100-132 are selectable, at 133, 133-160 are selectable), and the multiplier by BIOS. I can't just change both the multiplier and bus speed together. Apparently at 100-132 it uses 2/3 AGP and 1/3 PCI, and I'm assuming that's why it won't boot at 132 - at 133 by jumper, it switches to 1/2 AGP and 1/4 PCI...

So, any idea on how I can do this w/o cutting traces? What needs to be done with L3 and L4? Thanks in advance for any tips!

--Kyle Yamnitz
Your Basic Computer Hardware Page:
http://www.BasicHardware.com

 

[Crashman]

OK, if it's unlocked by default, why can't you just jumper the motherboard to 133 and set it to 11x in BIOs without modifying the on-chip multiplier? Have you tried increasing the voltage? You can see the full details of L7 voltages <A HREF="http://www4.tomshardware.com/cpu/00q3/000711/amd-03.html" target="_new">HERE</A>
As far as MANUALLY adjusting the multiplier goes, you need to change L3 and L4 as well if you are trying to do it manually. You can find those settings <A HREF="http://www4.tomshardware.com/cpu/00q3/000711/amd-04.html" target="_new">HERE</A>. But if you can adjust them in BIOS, I would simply jumper the board to 133 and raise the voltage to 1.75 or 1.80v by simply closing one jumper as illustrated at the first link.

Cast not thine pearls before the swine