Connecting the bridges on an Athlon to hard lock the multiplier

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C

coralcaves

Member
Apr 24, 2001
34
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Im basically looking for what is said in the subject title...

I know there is a way to hard lock the multiplier.
basically I have a 266 front side bus 1ghz athlon
that I want to hard lock the multiplier to 10 instead of 7.5 and I want to run it at 200mhz....

dont ask why I bought the wrong mobo and it doesnt let me change the multiplier and It only supports 200 front side bus....

so there you have it ...
any help would be great
thanks in adavance
 
T

TunaBoo

Diamond Member
May 6, 2001
3,280
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Hard locking is easy.

Hard unlocking is not. It is very very very hard to cut those bridges.

But tomshardware has a chart of every possible combo on how to hard code stuff in. Good luck.
 
S

Smapty

Member
Jun 23, 2001
100
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oh man, cutting those things is a bisnatch, im still working on cutting mine, all i can do is raise the fsb, which only gets me 700@784. good luck...youre gonna need it.
 
S

Shooters

Diamond Member
Sep 29, 2000
3,100
0
76
He's saying that his mobo doesn't have multiplier adjustments and is only capable of 200MHz while his chip is a 266MHz FSB, so he wants to unlock the multiplier from 7.5 and lock it to 10 by connecting the appropriate bridges.

coralcaves, are you sure your mobo doesn't have multiplier adjustments? It may not be jumperless, but I don't know of any socket A board that doesn't have at least jumpered multiplier adjustments. Does it just auto-detect the cpu speed or something? You may be able to safe yourself a lot of hassle by just unlocking the chip and setting the multiplier through dip switches.
 
C

coralcaves

Member
Apr 24, 2001
34
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It's a MSI KM133M ....Im putting it together for a friend ....I didnt know it didnt support 266 front side....dumb me......There doesn't seem to be any jumpers to set the multiplier that I can find....I have looked all over....and it is NOT in the bios as this is a pretty cheap board and all....Im gonna head down to msi's page and see what I can find.....

if yall know anything I might be missing before doing the hard lock then let me know
I wont get around to it till the weekend so Ive got time for suggestions.

thanks for the help so far....these forums rock.

 
B

Bozo Galora

Diamond Member
Oct 28, 1999
7,271
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At the very least youre gonna need one of those circular fourescent magnifying lamps and a mini vise to hold the card.
If you can find a high quality hand held electric engraving tool, with a FINE sharp carbide tip and work it back and forth resting the bottom of both hands on something.
I guess the factory uses a laser
 
L

loosbrew

Golden Member
Oct 30, 2000
1,336
1
0
ditto to what lunotic said....
i was very lucky with my tbird..i bought my 900 back in october when 1.2 was like 300 bucks! go figure that all i had to do to set the default multiplier to 700 was CROSS one bridge!! same goes for the 750 duron i bought just a few weeks ago. just cross one bidge to make it a 700 and viola! it works! it worked gret for my 900 tbird and now im running 1066(8x133). sooo much faster than 10x100! i would defintely agree to go with 1100 if i were you and use pencil, in case he gets a 133 board and want to use the same cpu.

good luck
loosbrew
 
C

coralcaves

Member
Apr 24, 2001
34
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do I close all 4 bridges on the L4 or what ....I saw that thing on toms and it seems to have one L4 bridge not closed on the 1100 that is closed on the 750....

so are yall saying close all L4 Bridges and then follow the chart on toms for the rest?
 
T

TunaBoo

Diamond Member
May 6, 2001
3,280
0
0


<< do I close all 4 bridges on the L4 or what ....I saw that thing on toms and it seems to have one L4 bridge not closed on the 1100 that is closed on the 750....

so are yall saying close all L4 Bridges and then follow the chart on toms for the rest? >>



NO, you have to follow the bridges for all including L4's.
 
N

nortexoid

Diamond Member
May 1, 2000
4,096
0
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locking/unlocking doesn't necessary entail cutting bridges...check the possible multiplier combinations and bridge configurations here or at tom's...

if u want to connect bridges, use pencil...if u want to cut...a dremel?...oooh...hectic.
 
E

Eli

Super Moderator | Elite Member
Oct 9, 1999
50,419
8
81
Nice. I bet at least one of those tools could cut a bridge. Still sounds like a pretty risky thing. If I were going to do that, I'd find a way to protect the core from a... *slip*.. ;)
 
J

johncar

Senior member
Jul 18, 2000
523
0
0
Eli et al,
Repeating post.......

http://members.nbci.com/candjac/index.htm Duron/Tbird OC article has full details of all bridges and settings algorithms...plus pics and circuit diagrams for full understanding of various &quot;hard mods&quot;.

Page 2 has section on fast bridge cutting tool. End quote.

Read the section on the tool and you'll see we recommend to mod the burr into a sharp edge then epoxy in a tube and use by hand...then no slip problems. Never use these burrs in a Dreml power tool.

John C.
 
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