XP-M, no multiplier >12 (KT7)

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mb: Kt7 (non-A)
bios: a9
cpu : axmd 2400 fjq4c (fsb266, 35W)

tried core V up to 1,9 (32grC)

I simply can' activate any multiplier above 12 (freq given by MBM 5)

(In a Fresh Diagnose cpu run it was ranked twice as high as a P4 1,6GHz
!!!??? Then run @1200... wasn't that strange?)

Can MBM 5 be wrong?


Can something be adjusted (checked) to get more outa the cpu?


Morgan O.
 
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On Wed, 10 Aug 2005 09:24:07 +0000, Morgan Ohlson wrote:

>
> mb: Kt7 (non-A)
> bios: a9
> cpu : axmd 2400 fjq4c (fsb266, 35W)
>
> tried core V up to 1,9 (32grC)
>
Way too high. Bring it back down under 1.85v

> I simply can' activate any multiplier above 12 (freq given by MBM 5)
>
The board doesn't have control for the fifth multiplier bit, so unless it
pulled high you won't get above 12.5 with a standard XP. I've never used
an XP-M, but if it uses the L3 bridges to set the multiplier, then you
must have the 5th bit high. It will then default to a 20x multiplier (bios
shows 12>above or something like that). So what is the state of the laser
cuts on the L3 bridges?

> Can something be adjusted (checked) to get more outa the cpu?
>
Yes. Here are some resources.

http://fab51.com/index-e.html

http://www.ocinside.de/go_e.html?/html/workshop/pinmod/amd_pinmod.html

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On Wed, 10 Aug 2005 09:24:07 +0000, Morgan Ohlson wrote:

>
> mb: Kt7 (non-A)
> bios: a9
> cpu : axmd 2400 fjq4c (fsb266, 35W)
>
Try a google search of this group for kt7 xp-m. it has been discussed here
before about the mod you need to do. Here's something.

----------
3. Alan Feb 28, 4:20 am show options
Newsgroups: alt.comp.periphs.mainboard.abit
From: "Alan" <sha...@yahoo.com> - Find messages by this author
Date: 28 Feb 2005 01:20:49 -0800
Local: Mon, Feb 28 2005 4:20 am
Subject: Re: kt7-raid easy athlon xp upgrade?


You could try an Athlon XP-M 2500 or 2600+.

I had a 2500+ running at 20x100MHz in my KT7a, but now running at
2261MHz quite happily.

You'll need to do the socket wire mod:
http://www.ocforums.com/showth read.php?s=c8f573747b2926eb4a5 c6fa49424...

Then 12.5x will hopefully be mapped to 20x in the bios, as in Wes'
multiplier cross ref.
------------

Note that this is nothing more than pulling socket pin AJ27 (5th
multiplier bit) high to gain access to the upper multipliers.
 
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On Wed, 10 Aug 2005 10:16:49 GMT, Wes Newell wrote:

> On Wed, 10 Aug 2005 09:24:07 +0000, Morgan Ohlson wrote:
>
>>
>> mb: Kt7 (non-A)
>> bios: a9
>> cpu : axmd 2400 fjq4c (fsb266, 35W)
>>
>> tried core V up to 1,9 (32grC)
>>
> Way too high. Bring it back down under 1.85v
>
>> I simply can' activate any multiplier above 12 (freq given by MBM 5)
>>
> The board doesn't have control for the fifth multiplier bit, so unless it
> pulled high you won't get above 12.5 with a standard XP. I've never used
> an XP-M, but if it uses the L3 bridges to set the multiplier, then you
> must have the 5th bit high. It will then default to a 20x multiplier (bios
> shows 12>above or something like that). So what is the state of the laser
> cuts on the L3 bridges?

Does this mean that it would be considerd to be multiplier locked?

Pull 5th bit high?

L3 bridges... don't know yet.

>
>> Can something be adjusted (checked) to get more outa the cpu?
>>
> Yes. Here are some resources.
>
> http://fab51.com/index-e.html
>
> http://www.ocinside.de/go_e.html?/html/workshop/pinmod/amd_pinmod.html


Morgan O.
 
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On Wed, 10 Aug 2005 10:28:49 GMT, Wes Newell wrote:

> On Wed, 10 Aug 2005 09:24:07 +0000, Morgan Ohlson wrote:
>
>>
>> mb: Kt7 (non-A)
>> bios: a9
>> cpu : axmd 2400 fjq4c (fsb266, 35W)
>>
> Try a google search of this group for kt7 xp-m. it has been discussed here
> before about the mod you need to do. Here's something.
>
> ----------
> 3. Alan Feb 28, 4:20 am show options
> Newsgroups: alt.comp.periphs.mainboard.abit
> From: "Alan" <sha...@yahoo.com> - Find messages by this author
> Date: 28 Feb 2005 01:20:49 -0800
> Local: Mon, Feb 28 2005 4:20 am
> Subject: Re: kt7-raid easy athlon xp upgrade?
>
>
> You could try an Athlon XP-M 2500 or 2600+.
>
> I had a 2500+ running at 20x100MHz in my KT7a, but now running at
> 2261MHz quite happily.
>
> You'll need to do the socket wire mod:
> http://www.ocforums.com/showth read.php?s=c8f573747b2926eb4a5 c6fa49424...
>
> Then 12.5x will hopefully be mapped to 20x in the bios, as in Wes'
> multiplier cross ref.
> ------------
>
> Note that this is nothing more than pulling socket pin AJ27 (5th
> multiplier bit) high to gain access to the upper multipliers.

What strands are sufficient? (to fat?)


Morgan O.
 
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On Wed, 10 Aug 2005 10:16:49 GMT, Wes Newell wrote:

> On Wed, 10 Aug 2005 09:24:07 +0000, Morgan Ohlson wrote:
>
>>
>> mb: Kt7 (non-A)
>> bios: a9
>> cpu : axmd 2400 fjq4c (fsb266, 35W)
>>
>> tried core V up to 1,9 (32grC)
>>
> Way too high. Bring it back down under 1.85v
>
>> I simply can' activate any multiplier above 12 (freq given by MBM 5)
>>
> The board doesn't have control for the fifth multiplier bit, so unless it
> pulled high you won't get above 12.5 with a standard XP. I've never used
> an XP-M, but if it uses the L3 bridges to set the multiplier, then you
> must have the 5th bit high. It will then default to a 20x multiplier (bios
> shows 12>above or something like that). So what is the state of the laser
> cuts on the L3 bridges?
>
>> Can something be adjusted (checked) to get more outa the cpu?
>>
> Yes. Here are some resources.
>
> http://fab51.com/index-e.html
>
> http://www.ocinside.de/go_e.html?/html/workshop/pinmod/amd_pinmod.html

Can smeard heat-paste /film change anything?


Morgan O.
 
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On Wed, 10 Aug 2005 11:22:53 +0000, Morgan Ohlson wrote:

> What strands are sufficient? (to fat?)
>
I used a single strand form a ribbon cable. I'd guess that anything larger
than 30 guage would be too big. Note that wire gets bigger as number goes
lower. IOW's 30 guage is a lot smaller than 24 guage (common telco wire,
cat 5 wire, etc.)

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On Wed, 10 Aug 2005 11:24:51 +0000, Morgan Ohlson wrote:

> Can smeard heat-paste /film change anything?
>
Sorry. I don't know what it is. To pull AJ27 high, you can;

1) Cut the L3-5 bridge on the cpu.
2) Connect AJ27 to vcc pin next to it a) on the cpu, b0 on the MB, c)
anywhere you can find them.:)

You can use wire, conductive paint, or whatever you can find that will
conduct.

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On Wed, 10 Aug 2005 19:13:36 GMT, Wes Newell wrote:

> On Wed, 10 Aug 2005 11:22:53 +0000, Morgan Ohlson wrote:
>
>> What strands are sufficient? (to fat?)
>>
> I used a single strand form a ribbon cable. I'd guess that anything larger
> than 30 guage would be too big. Note that wire gets bigger as number goes
> lower. IOW's 30 guage is a lot smaller than 24 guage (common telco wire,
> cat 5 wire, etc.)

What could be the safe max freq for the xp-m2400+ (heat, stability etc.) ?

I don't have the need to push it to it's limits.


Morgan O.
 
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On Thu, 11 Aug 2005 19:50:11 +0000, Morgan Ohlson wrote:

> On Wed, 10 Aug 2005 19:13:36 GMT, Wes Newell wrote:
>
>> On Wed, 10 Aug 2005 11:22:53 +0000, Morgan Ohlson wrote:
>>
>>> What strands are sufficient? (to fat?)
>>>
>> I used a single strand form a ribbon cable. I'd guess that anything larger
>> than 30 guage would be too big. Note that wire gets bigger as number goes
>> lower. IOW's 30 guage is a lot smaller than 24 guage (common telco wire,
>> cat 5 wire, etc.)
>
> What could be the safe max freq for the xp-m2400+ (heat, stability etc.) ?
> I don't have the need to push it to it's limits.
>
It will vary from one chip to another depending on PSU, cooler, etc., but
the fastest stable speed you can get at 1.70v with still low temps sounds
good to me for 24/7 operation. That might be 2400MHz or less or more.:)

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On Thu, 11 Aug 2005 20:37:17 GMT, Wes Newell wrote:

> On Thu, 11 Aug 2005 19:50:11 +0000, Morgan Ohlson wrote:
>
>> On Wed, 10 Aug 2005 19:13:36 GMT, Wes Newell wrote:
>>
>>> On Wed, 10 Aug 2005 11:22:53 +0000, Morgan Ohlson wrote:
>>>
>>>> What strands are sufficient? (to fat?)
>>>>
>>> I used a single strand form a ribbon cable. I'd guess that anything larger
>>> than 30 guage would be too big. Note that wire gets bigger as number goes
>>> lower. IOW's 30 guage is a lot smaller than 24 guage (common telco wire,
>>> cat 5 wire, etc.)
>>
>> What could be the safe max freq for the xp-m2400+ (heat, stability etc.) ?
>> I don't have the need to push it to it's limits.
>>
> It will vary from one chip to another depending on PSU, cooler, etc., but
> the fastest stable speed you can get at 1.70v with still low temps sounds
> good to me for 24/7 operation. That might be 2400MHz or less or more.:)


At which max speed would you _bet_ it could run stable at 1,7V ? ;o)

....so to know where to start.

psu 250w (early athlon approved)
basicly laso low consumsion (ati graphics)
fan TR2-M3 ( => XP 3400+)

Saw that my cpu is one of those that can take 100degC


Morgan O.
 
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On Sat, 13 Aug 2005 09:09:29 +0000, Morgan Ohlson wrote:

> On Thu, 11 Aug 2005 20:37:17 GMT, Wes Newell wrote:
>
>> On Thu, 11 Aug 2005 19:50:11 +0000, Morgan Ohlson wrote:
>>
>>> What could be the safe max freq for the xp-m2400+ (heat, stability etc.) ?
>>> I don't have the need to push it to it's limits.
>>>
>> It will vary from one chip to another depending on PSU, cooler, etc., but
>> the fastest stable speed you can get at 1.70v with still low temps sounds
>> good to me for 24/7 operation. That might be 2400MHz or less or more.:)
>
> At which max speed would you _bet_ it could run stable at 1,7V ? ;o)
>
> ...so to know where to start.
>
> psu 250w (early athlon approved)
> basicly laso low consumsion (ati graphics)
> fan TR2-M3 ( => XP 3400+)
>
> Saw that my cpu is one of those that can take 100degC
>
I wouldn't trust that 250W cpu to keep it stable at any speed. The TR2-M3
is a good choice and should be ok even if you take the voltage up to
1.85v. Any guess I made as to how fast you can run the cpu stable at 1.7v
with that PSU is about as good as a drop of rain on a hot sidewalk, but
since you insist, I'll throw out 2000MHz. Now, assuming a decent core and
a larger PSU, I'd guess close to 2400MHz. I'd consider myself lucky to
keep it stable at stock voltage and speed with that PSU. For under $20 you
can get a 600W PSU, and that's what I'd do first. Or even a 500W for less..

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Need good help? Provide all system info with question.
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On Sat, 13 Aug 2005 17:14:31 GMT, Wes Newell wrote:

> On Sat, 13 Aug 2005 09:09:29 +0000, Morgan Ohlson wrote:
>
>> On Thu, 11 Aug 2005 20:37:17 GMT, Wes Newell wrote:
>>
>>> On Thu, 11 Aug 2005 19:50:11 +0000, Morgan Ohlson wrote:
>>>
>>>> What could be the safe max freq for the xp-m2400+ (heat, stability etc.) ?
>>>> I don't have the need to push it to it's limits.
>>>>
>>> It will vary from one chip to another depending on PSU, cooler, etc., but
>>> the fastest stable speed you can get at 1.70v with still low temps sounds
>>> good to me for 24/7 operation. That might be 2400MHz or less or more.:)
>>
>> At which max speed would you _bet_ it could run stable at 1,7V ? ;o)
>>
>> ...so to know where to start.
>>
>> psu 250w (early athlon approved)
>> basicly laso low consumsion (ati graphics)
>> fan TR2-M3 ( => XP 3400+)
>>
>> Saw that my cpu is one of those that can take 100degC
>>
> I wouldn't trust that 250W cpu to keep it stable at any speed. The TR2-M3
> is a good choice and should be ok even if you take the voltage up to
> 1.85v. Any guess I made as to how fast you can run the cpu stable at 1.7v
> with that PSU is about as good as a drop of rain on a hot sidewalk, but
> since you insist, I'll throw out 2000MHz. Now, assuming a decent core and
> a larger PSU, I'd guess close to 2400MHz. I'd consider myself lucky to
> keep it stable at stock voltage and speed with that PSU. For under $20 you
> can get a 600W PSU, and that's what I'd do first. Or even a 500W for less..


When making pin-bridges I hade lost my notes. I guessed at the pattern for
24x and got it right.
Starting with 1,75V it started. But, at restart nothing! (temperature
rised?)

At 1,8V and 1,85V same thing. Boot but lock at first windows screen.

Just to try I went for a lower voltage, 1,65V and it started at first try.
Watching MBM5 meters the cpu temp fell from 43degC to 39deg. Possibly they
run better at an optimum temp!? ...at least this, but who knows what
happens next?

At least it's up and running at 2400, 1,65V and ~39degC.


Thanks!

Morgan O.
 
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On Sat, 13 Aug 2005 17:14:31 GMT, Wes Newell wrote:

> On Sat, 13 Aug 2005 09:09:29 +0000, Morgan Ohlson wrote:
>
>> On Thu, 11 Aug 2005 20:37:17 GMT, Wes Newell wrote:
>>
>>> On Thu, 11 Aug 2005 19:50:11 +0000, Morgan Ohlson wrote:
>>>
>>>> What could be the safe max freq for the xp-m2400+ (heat, stability etc.) ?
>>>> I don't have the need to push it to it's limits.
>>>>
>>> It will vary from one chip to another depending on PSU, cooler, etc., but
>>> the fastest stable speed you can get at 1.70v with still low temps sounds
>>> good to me for 24/7 operation. That might be 2400MHz or less or more.:)
>>
>> At which max speed would you _bet_ it could run stable at 1,7V ? ;o)
>>
>> ...so to know where to start.
>>
>> psu 250w (early athlon approved)
>> basicly laso low consumsion (ati graphics)
>> fan TR2-M3 ( => XP 3400+)
>>
>> Saw that my cpu is one of those that can take 100degC
>>
> I wouldn't trust that 250W cpu to keep it stable at any speed. The TR2-M3
> is a good choice and should be ok even if you take the voltage up to
> 1.85v. Any guess I made as to how fast you can run the cpu stable at 1.7v
> with that PSU is about as good as a drop of rain on a hot sidewalk, but
> since you insist, I'll throw out 2000MHz. Now, assuming a decent core and
> a larger PSU, I'd guess close to 2400MHz. I'd consider myself lucky to
> keep it stable at stock voltage and speed with that PSU. For under $20 you
> can get a 600W PSU, and that's what I'd do first. Or even a 500W for less..

So far it has started perfect both at cold start and restart from "hot" at
1,65V. Temp runs stady at 38-40degC.

Either my psu doesn't deliver steady at >~1,75V
or the cpu performes more steady <~44degC


Morgan O.
 
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On Mon, 15 Aug 2005 11:58:25 GMT, Morgan Ohlson wrote:

> On Sat, 13 Aug 2005 17:14:31 GMT, Wes Newell wrote:
>
>> On Sat, 13 Aug 2005 09:09:29 +0000, Morgan Ohlson wrote:
>>
>>> On Thu, 11 Aug 2005 20:37:17 GMT, Wes Newell wrote:
>>>
>>>> On Thu, 11 Aug 2005 19:50:11 +0000, Morgan Ohlson wrote:
>>>>
>>>>> What could be the safe max freq for the xp-m2400+ (heat, stability etc.) ?
>>>>> I don't have the need to push it to it's limits.
>>>>>
>>>> It will vary from one chip to another depending on PSU, cooler, etc., but
>>>> the fastest stable speed you can get at 1.70v with still low temps sounds
>>>> good to me for 24/7 operation. That might be 2400MHz or less or more.:)
>>>
>>> At which max speed would you _bet_ it could run stable at 1,7V ? ;o)
>>>
>>> ...so to know where to start.
>>>
>>> psu 250w (early athlon approved)
>>> basicly laso low consumsion (ati graphics)
>>> fan TR2-M3 ( => XP 3400+)
>>>
>>> Saw that my cpu is one of those that can take 100degC
>>>
>> I wouldn't trust that 250W cpu to keep it stable at any speed. The TR2-M3
>> is a good choice and should be ok even if you take the voltage up to
>> 1.85v. Any guess I made as to how fast you can run the cpu stable at 1.7v
>> with that PSU is about as good as a drop of rain on a hot sidewalk, but
>> since you insist, I'll throw out 2000MHz. Now, assuming a decent core and
>> a larger PSU, I'd guess close to 2400MHz. I'd consider myself lucky to
>> keep it stable at stock voltage and speed with that PSU. For under $20 you
>> can get a 600W PSU, and that's what I'd do first. Or even a 500W for less..
>
> So far it has started perfect both at cold start and restart from "hot" at
> 1,65V. Temp runs stady at 38-40degC.
>
> Either my psu doesn't deliver steady at >~1,75V
> or the cpu performes more steady <~44degC

I keep puting small notes here...

It hase proved to be problems with warm restart. Lock at desktop (icons
/start menue doesn't load).

From cold it seem to start good at all voltages, now started at 1,50V and
temp keeps below 38grC.

To improve warm restart I pulled down multiplier from 24 => 22. (still at
fsb 100). There seem to be some incompatibility with RAM (256+128) that
holds the max fsb down.

(In most SOHO work it's the HDD that produce process time anyway. Running
benchmarks it's obvious that HDD, M-board , fsb and RAM put limits and that
the cpu seldom get it's power out. Gaming is a different quest where cpu
probably is more directly essential.
Basicly the differens between a 2+GHz and a 3+GHz is likely of no matter
at all for SOHO-users. I run some technical stock analysis scan-calculations
(100 stocks) and at 2200Mhz hdd writes constantly)

The real issue seems to be that there is a permanent slight instability
(althoug KT7 was perhaps the best in it's early days). I had problems also
running the duron 700 on this board. It locked during start 50%.


Morgan O.
 
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On Tue, 23 Aug 2005 07:04:16 +0000, Morgan Ohlson wrote:

> The real issue seems to be that there is a permanent slight instability
> (althoug KT7 was perhaps the best in it's early days). I had problems also
> running the duron 700 on this board. It locked during start 50%.

I'd say you probably have a cap problem on the board. Not worth trying to
fix IMO. Time for a new board.

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On Tue, 23 Aug 2005 19:49:54 GMT, Wes Newell wrote:

> On Tue, 23 Aug 2005 07:04:16 +0000, Morgan Ohlson wrote:
>
>> The real issue seems to be that there is a permanent slight instability
>> (althoug KT7 was perhaps the best in it's early days). I had problems also
>> running the duron 700 on this board. It locked during start 50%.
>
> I'd say you probably have a cap problem on the board. Not worth trying to
> fix IMO. Time for a new board.

I really don't know why... but when booting just get in the wallpaper and
starts to load start-menues etc it runns very stable.

A guess may be that there is some driver or alike that challanges stability
just during start.

Last days it has started >50% of the times at 1,55V and 2,2Ghz. T=38grC. I
think I can live with that.


Morgan O.
 
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On Wed, 24 Aug 2005 09:01:20 +0000, Morgan Ohlson wrote:

> Last days it has started >50% of the times at 1,55V and 2,2Ghz. T=38grC. I
> think I can live with that.
>
IMO, 1.55v just isn't enough power for 2.2GHz. An XP-M is just a regular
XP with lower default voltages at a slower speed. AMD doesn't sell any
cpu's with voltages that low compared to that speed. 1.65v would be the
default, and I wouldn't go below that at that speed and for sure wouldn't
go below 1.60v

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On Wed, 24 Aug 2005 14:40:20 GMT, Wes Newell wrote:

> On Wed, 24 Aug 2005 09:01:20 +0000, Morgan Ohlson wrote:
>
>> Last days it has started >50% of the times at 1,55V and 2,2Ghz. T=38grC. I
>> think I can live with that.
>>
> IMO, 1.55v just isn't enough power for 2.2GHz. An XP-M is just a regular
> XP with lower default voltages at a slower speed. AMD doesn't sell any
> cpu's with voltages that low compared to that speed. 1.65v would be the
> default, and I wouldn't go below that at that speed and for sure wouldn't
> go below 1.60v

I think this cpu is a 1,35V-core

Cold it starts at 1,50V but hot it needs 1,70V

Morgan
 
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On Sun, 28 Aug 2005 08:30:20 +0000, Morgan Ohlson wrote:

> On Wed, 24 Aug 2005 14:40:20 GMT, Wes Newell wrote:
>
>> On Wed, 24 Aug 2005 09:01:20 +0000, Morgan Ohlson wrote:
>>
>>> Last days it has started >50% of the times at 1,55V and 2,2Ghz. T=38grC. I
>>> think I can live with that.
>>>
>> IMO, 1.55v just isn't enough power for 2.2GHz. An XP-M is just a regular
>> XP with lower default voltages at a slower speed. AMD doesn't sell any
>> cpu's with voltages that low compared to that speed. 1.65v would be the
>> default, and I wouldn't go below that at that speed and for sure wouldn't
>> go below 1.60v
>
> I think this cpu is a 1,35V-core
>
> Cold it starts at 1,50V but hot it needs 1,70V
>
It's a Barton core cpu. There is no set voltage for a core, there's only
the default voltage. All Barton core XP's are set to 1.65v by AMD AFAIK.
XP-M's are the same core, just clocked slower and with less voltage. Max
voltages set by AMD for XP cpu's is 1.75v for Palomino cores and 1.65v for
newer cores. because of manufacturing processes, one core may need more or
less than another to run at the same speed. That's just the way it is. To
get my Tbred b core to 2400MHz required 1.85v. Another of the same model
may have only needed 1.80v, while yet another may not have made it that
fast with 1.85v. It's all relative to what you have.

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KT133 MB, CPU @2400MHz (24x100): SIS755 MB CPU @2330MHz (10x233)
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