XP2500 Barton running on 266 FSB?

You can clock the bus at a lower speed, the chip won't care. However, if the multiplier is locked at 11, your speed will reduce
from 1833MHz to 1463MHz, a 20% reduction. If the CPU multiplier is unlocked and your board can provide a multiplier up to 14
(1862MHz), then you can still retain the raw CPU speed advantage but won't get the memory (333MHz) advantage.

--
Please de-spam my address if replying to me
--------------------------------------------
"Rob" <spam.TakeThisOut@spam.com> wrote in message news:xp67b.1049$xM3.593521@newsfep1-win.server.ntli.net...
 > I need to know if the XP2500 will run on the Asus barebones Terminator
 > barebones system.
 > The chip is not listed by Asus as a supported chip but I was wondering if it
 > could run the chip at 266FSB instead of 333 ?
 >
 > I placed the order on ebuyer this evening and before I could change the
 > order it was awaiting shipping so I couldn't change it.
 > Ebuyer are just too efficient!
 >
 > I should have ordered the XP2400 266FSB, I have reqested the change but I am
 > not too hopeful about it happening.
 >
 > Cheers
 >
 > Rob
 >
 ><!-- ~MESSAGE_AFTER~ -->
 >> Stay informed about: XP2500 Barton running on 266 FSB? 

Thanks for the info, it's a bit clearer to me now.

Why would it be locked at 11, if it knows the CPU is meant to run at 1833
then surely it will set the multiplyer to 14?

If it has an adjustable multiplyer I could overclock it to 2Ghz quite easily
I guess. 15x133mhz = 1995mhz
Chances are it won't let me, site does not include the DDR version of the
manual.
The older non-DDR manual does not have the choice of multiplyer selection.
I will need to wait and see what the manual has in it when it arrives.

I have ordered a XP2400 CPU but that was out of stock and 5 days wait.
Bit of a bugger if you ask me.

Ebuyer will quite happily refund the XP2500 and postage to return it, so on
that I cannot fault them on that.

Cheers

Rob

"mdp" <markdpend.TakeThisOut@aol.spambegone.com> wrote in message
news:4lb7b.4096$PE6.2651@newsread3.news.pas.earthlink.net...
 > You can clock the bus at a lower speed, the chip won't care. However, if
the multiplier is locked at 11, your speed will reduce
 > from 1833MHz to 1463MHz, a 20% reduction. If the CPU multiplier is
unlocked and your board can provide a multiplier up to 14
 > (1862MHz), then you can still retain the raw CPU speed advantage but won't
get the memory (333MHz) advantage.
 >
 > --
 > Please de-spam my address if replying to me
 > --------------------------------------------
 > "Rob" <spam.TakeThisOut@spam.com> wrote in message
news:xp67b.1049$xM3.593521@newsfep1-win.server.ntli.net...
  > > I need to know if the XP2500 will run on the Asus barebones Terminator
  > > barebones system.
  > > The chip is not listed by Asus as a supported chip but I was wondering
if it
  > > could run the chip at 266FSB instead of 333 ?
  > >
  > > I placed the order on ebuyer this evening and before I could change the
  > > order it was awaiting shipping so I couldn't change it.
  > > Ebuyer are just too efficient!
  > >
  > > I should have ordered the XP2400 266FSB, I have reqested the change but
I am
  > > not too hopeful about it happening.
  > >
  > > Cheers
  > >
  > > Rob
  > >
  > >
 >
 ><!-- ~MESSAGE_AFTER~ -->
 >> Stay informed about: XP2500 Barton running on 266 FSB? 

Rob wrote:
 > Thanks for the info, it's a bit clearer to me now.
 >
 > Why would it be locked at 11, if it knows the CPU is meant to run at
 > 1833 then surely it will set the multiplyer to 14?

No - the bridges on the chip set the default multiplier and FSB.

You can change them independantly but the default is still the default.

The processor speed is determine from the FSB * Multiplier.

The multiplier os not determined by the CPU speed / FSB (if you see what I
mean)

 > If it has an adjustable multiplyer I could overclock it to 2Ghz quite
 > easily I guess. 15x133mhz = 1995mhz

Yep (2000MHz... it should be 133.33. Mine runs a little fast though... I
end up with 2005 (200*10))

 > Chances are it won't let me, site does not include the DDR version of
 > the manual.

Eh?

 > The older non-DDR manual does not have the choice of multiplyer
 > selection. I will need to wait and see what the manual has in it when
 > it arrives.

Oh I see...

Well the biggest issue is that you need to go from <=12.5 to >=13, which
requires the 5th bit of the multiplier to change. Some motherboards don't
support this and so you will have to change it yourself... either with the
bridges or the wire-in-the-socket mod.

You haven't said what motherboard you have.

 > I have ordered a XP2400 CPU but that was out of stock and 5 days wait.
 > Bit of a bugger if you ask me.
 >
 > Ebuyer will quite happily refund the XP2500 and postage to return it,
 > so on that I cannot fault them on that.

I'd have kept the Barton.

Ben
--
I'm not just a number. To many, I'm known as a String...<!-- ~MESSAGE_AFTER~ -->
 >> Stay informed about: XP2500 Barton running on 266 FSB? 

Hi Ben,

 > You haven't said what motherboard you have.
ASUS A7SC TriOptix form-factor
<a style='text-decoration: underline;' href="http://www.asus.com/prog/spec.asp?m=Terminator%20K7%20DDR" target="_blank">http://www.asus.com/prog/spec.asp?m=Terminator%20K7%20DDR</a>

 > I'd have kept the Barton.
Why, chances are it will be slower than the XP2400 in the A7SC M/B

Yours thoughts?

Rob

"Ben Pope" <spam.RemoveThis@hotmail.com> wrote in message
news:bjkvql$ke6ra$1@ID-191149.news.uni-berlin.de...
 > Rob wrote:
  > > Thanks for the info, it's a bit clearer to me now.
  > >
  > > Why would it be locked at 11, if it knows the CPU is meant to run at
  > > 1833 then surely it will set the multiplyer to 14?
 >
 > No - the bridges on the chip set the default multiplier and FSB.
 >
 > You can change them independantly but the default is still the default.
 >
 > The processor speed is determine from the FSB * Multiplier.
 >
 > The multiplier os not determined by the CPU speed / FSB (if you see what I
 > mean)
 >
  > > If it has an adjustable multiplyer I could overclock it to 2Ghz quite
  > > easily I guess. 15x133mhz = 1995mhz
 >
 > Yep (2000MHz... it should be 133.33. Mine runs a little fast though... I
 > end up with 2005 (200*10))
 >
  > > Chances are it won't let me, site does not include the DDR version of
  > > the manual.
 >
 > Eh?
 >
  > > The older non-DDR manual does not have the choice of multiplyer
  > > selection. I will need to wait and see what the manual has in it when
  > > it arrives.
 >
 > Oh I see...
 >
 > Well the biggest issue is that you need to go from <=12.5 to >=13, which
 > requires the 5th bit of the multiplier to change. Some motherboards don't
 > support this and so you will have to change it yourself... either with the
 > bridges or the wire-in-the-socket mod.
 >
 > You haven't said what motherboard you have.
 >
  > > I have ordered a XP2400 CPU but that was out of stock and 5 days wait.
  > > Bit of a bugger if you ask me.
  > >
  > > Ebuyer will quite happily refund the XP2500 and postage to return it,
  > > so on that I cannot fault them on that.
 >
 > I'd have kept the Barton.
 >
 > Ben
 > --
 > I'm not just a number. To many, I'm known as a String...
 >
 ><!-- ~MESSAGE_AFTER~ -->
 >> Stay informed about: XP2500 Barton running on 266 FSB? 

Rob wrote:
 > Hi Ben,
 >
  >> You haven't said what motherboard you have.
 > ASUS A7SC TriOptix form-factor
<font color=purple> > <a style='text-decoration: underline;' href="http://www.asus.com/prog/spec.asp?m=Terminator%20K7%20DDR</font" target="_blank">http://www.asus.com/prog/spec.asp?m=Terminator%20K7%20DDR</font</a>>
 >
  >> I'd have kept the Barton.
 > Why, chances are it will be slower than the XP2400 in the A7SC M/B
 >
 > Yours thoughts?

Clock for clock the Barton is quicker due to an increased cache hit ratio
and therefore greater memory performance.

Ben
--
I'm not just a number. To many, I'm known as a String...<!-- ~MESSAGE_AFTER~ -->
 >> Stay informed about: XP2500 Barton running on 266 FSB? 

Hi Ben,

 > Clock for clock the Barton is quicker due to an increased cache hit ratio
 > and therefore greater memory performance.

I hear what you are saying, its got double the L2 cache but its clock
cycling is slower and the feed of data from memory through the databus is
the same(266) due to the lack of a 333 FSB on the M/B.
I'll go with the XP2400, but I would love a 333 FSB version of this
barebone system. It works out as a very cheap to build system.

Cheers

Rob<!-- ~MESSAGE_AFTER~ -->
 >> Stay informed about: XP2500 Barton running on 266 FSB? 

Rob wrote:
 > Hi Ben,
 >
  >> Clock for clock the Barton is quicker due to an increased cache hit
  >> ratio and therefore greater memory performance.
 >
 > I hear what you are saying, its got double the L2 cache but its clock
 > cycling is slower and the feed of data from memory through the
 > databus is the same(266) due to the lack of a 333 FSB on the M/B.
 > I'll go with the XP2400, but I would love a 333 FSB version of this
 > barebone system. It works out as a very cheap to build system.

Whats clock cycling?

Yep, agreed... with the 266 FSB you won't get the bandwidth increase that
you'd usually get - it'll be the same as the T'bred, but the increased L2
will still help a little. To be honest there really isn't that much between
the two - I suspect you'll be pleased with your purchase.

Ben
--
I'm not just a number. To many, I'm known as a String...<!-- ~MESSAGE_AFTER~ -->
 >> Stay informed about: XP2500 Barton running on 266 FSB? 

Hi Ben,
 > Whats clock cycling?
Cycles per second

A quick check at this :
<a style='text-decoration: underline;' href="http://www6.tomshardware.com/cpu/20030513/athlon_xp-21.html" target="_blank">http://www6.tomshardware.com/cpu/20030513/athlon_xp-21.html</a>

This shows the XP2500 333 can beat the XP2600 266 in a lot of cases so its a
better bet.
But the XP3200 400 certainly aint worth all the dosh and cooling you need to
throw at it not unless money is no object.

I want a kick-ass PC base unit for less than 300 GBP.
Using DDR2100, XP2400 266, 40GB Western Digital 8Mb cache HD (WD400JB), Case
loaded with everything including an all important compact flash slot.

So in the end you're right, the Barton XP2500 is better but I need the
system to use it to the full at a bargain basement price.

Nice chatting with you.

Cheers

Rob



"Ben Pope" <spam DeleteThis @hotmail.com> wrote in message
news:bjl9ol$kevp8$1@ID-191149.news.uni-berlin.de...
 > Rob wrote:
  > > Hi Ben,
  > >
   > >> Clock for clock the Barton is quicker due to an increased cache hit
   > >> ratio and therefore greater memory performance.
  > >
  > > I hear what you are saying, its got double the L2 cache but its clock
  > > cycling is slower and the feed of data from memory through the
  > > databus is the same(266) due to the lack of a 333 FSB on the M/B.
  > > I'll go with the XP2400, but I would love a 333 FSB version of this
  > > barebone system. It works out as a very cheap to build system.
 >
 > Whats clock cycling?
 >
 > Yep, agreed... with the 266 FSB you won't get the bandwidth increase that
 > you'd usually get - it'll be the same as the T'bred, but the increased L2
 > will still help a little. To be honest there really isn't that much
between
 > the two - I suspect you'll be pleased with your purchase.
 >
 > Ben
 > --
 > I'm not just a number. To many, I'm known as a String...
 >
 ><!-- ~MESSAGE_AFTER~ -->
 >> Stay informed about: XP2500 Barton running on 266 FSB? 

"Rob" <spam.TakeThisOut@spam.com> wrote in message
news:Ecr7b.48$um1.93397@newsfep2-gui.server.ntli.net...
[..snip..]
 > But the XP3200 400 certainly aint worth all the dosh and cooling you need
to
 > throw at it not unless money is no object.

Then all you do is buy a XP2500+ Barton and set it to be a XP3200+ like I
just did last weekend. Perfectly stable at 200x11=2.2GHz (3200+ speed).
Although I did need to up the Vcore by .025 volts (1.675 instead of 1.65) to
make it totally stable.

XP2500+, Aopen AK79D-400VN, 2x256MB DDR400 was less than $500 CND.<!-- ~MESSAGE_AFTER~ -->
 >> Stay informed about: XP2500 Barton running on 266 FSB? 

Rob wrote:
 > Hi Ben,
  >> Whats clock cycling?
 > Cycles per second

So final clock speed then... fine. But there's nothing stopping you from
clocking them the same.

 > A quick check at this :
<font color=purple> > <a style='text-decoration: underline;' href="http://www6.tomshardware.com/cpu/20030513/athlon_xp-21.html</font" target="_blank">http://www6.tomshardware.com/cpu/20030513/athlon_xp-21.html</font</a>>
 >
 > This shows the XP2500 333 can beat the XP2600 266 in a lot of cases
 > so its a better bet.
 > But the XP3200 400 certainly aint worth all the dosh and cooling you
 > need to throw at it not unless money is no object.

Indeed it isn't. I purchased an XP2500, but have been troubleshooting the
occasional error in Prime95 with higher FSB (been trying 200 and 220).

 > I want a kick-ass PC base unit for less than 300 GBP.
 > Using DDR2100, XP2400 266, 40GB Western Digital 8Mb cache HD
 > (WD400JB), Case loaded with everything including an all important
 > compact flash slot.

You're crippling the performance by buying PC2100. 256MB of Twinmos PC2100
is £30.50, PC2700 is £31, PC3200 is £32.50 (Tekheads.co.uk)

 > So in the end you're right, the Barton XP2500 is better but I need the
 > system to use it to the full at a bargain basement price.

Ben
--
I'm not just a number. To many, I'm known as a String...<!-- ~MESSAGE_AFTER~ -->
 >> Stay informed about: XP2500 Barton running on 266 FSB? 

Bad news.
The XP2500 will not post at all. No beeps or anything. (
If I pull the mem it beeps.
Wait till Tue for the XP2400 and check its not the m/b.

The Asus Terminator is excellent for the money. I am really pleased with it.
Even has "Qfan" on the case fan and CPU fan.

Cheers

Rob

"Ben Pope" <spam.DeleteThis@hotmail.com> wrote in message
news:bjmnrg$kkm9r$1@ID-191149.news.uni-berlin.de...
 > Rob wrote:
  > > Hi Ben,
   > >> Whats clock cycling?
  > > Cycles per second
 >
 > So final clock speed then... fine. But there's nothing stopping you from
 > clocking them the same.
 >
  > > A quick check at this :
<font color=green>  > > <a style='text-decoration: underline;' href="http://www6.tomshardware.com/cpu/20030513/athlon_xp-21.html</font" target="_blank">http://www6.tomshardware.com/cpu/20030513/athlon_xp-21.html</font</a>>
  > >
  > > This shows the XP2500 333 can beat the XP2600 266 in a lot of cases
  > > so its a better bet.
  > > But the XP3200 400 certainly aint worth all the dosh and cooling you
  > > need to throw at it not unless money is no object.
 >
 > Indeed it isn't. I purchased an XP2500, but have been troubleshooting the
 > occasional error in Prime95 with higher FSB (been trying 200 and 220).
 >
  > > I want a kick-ass PC base unit for less than 300 GBP.
  > > Using DDR2100, XP2400 266, 40GB Western Digital 8Mb cache HD
  > > (WD400JB), Case loaded with everything including an all important
  > > compact flash slot.
 >
 > You're crippling the performance by buying PC2100. 256MB of Twinmos
PC2100
 > is £30.50, PC2700 is £31, PC3200 is £32.50 (Tekheads.co.uk)
 >
  > > So in the end you're right, the Barton XP2500 is better but I need the
  > > system to use it to the full at a bargain basement price.
 >
 > Ben
 > --
 > I'm not just a number. To many, I'm known as a String...
 >
 ><!-- ~MESSAGE_AFTER~ -->
 >> Stay informed about: XP2500 Barton running on 266 FSB? 

Given that it beeps with no memory, a long beep is the correct code, I would first suspect the memory. Could be an incompatibility
or simply bad memory. Are you able to find another stick or try another slot? The manual states it will not work with DIMMS that
have more than 18 chips.
--
Please de-spam my address if replying to me
--------------------------------------------
"Rob" <spam RemoveThis @spam.com> wrote in message news:V0C8b.198$Pp2.133@newsfep1-gui.server.ntli.net...
 > Bad news.
 > The XP2500 will not post at all. No beeps or anything. (
 > If I pull the mem it beeps.
 > Wait till Tue for the XP2400 and check its not the m/b.
 >
 > The Asus Terminator is excellent for the money. I am really pleased with it.
 > Even has "Qfan" on the case fan and CPU fan.
 >
 > Cheers
 >
 > Rob
 >
 > "Ben Pope" <spam RemoveThis @hotmail.com> wrote in message
 > news:bjmnrg$kkm9r$1@ID-191149.news.uni-berlin.de...
  > > Rob wrote:
   > > > Hi Ben,
   > > >> Whats clock cycling?
   > > > Cycles per second
  > >
  > > So final clock speed then... fine. But there's nothing stopping you from
  > > clocking them the same.
  > >
   > > > A quick check at this :
<font color=brown>   > > > <a style='text-decoration: underline;' href="http://www6.tomshardware.com/cpu/20030513/athlon_xp-21.html</font" target="_blank">http://www6.tomshardware.com/cpu/20030513/athlon_xp-21.html</font</a>>
   > > >
   > > > This shows the XP2500 333 can beat the XP2600 266 in a lot of cases
   > > > so its a better bet.
   > > > But the XP3200 400 certainly aint worth all the dosh and cooling you
   > > > need to throw at it not unless money is no object.
  > >
  > > Indeed it isn't. I purchased an XP2500, but have been troubleshooting the
  > > occasional error in Prime95 with higher FSB (been trying 200 and 220).
  > >
   > > > I want a kick-ass PC base unit for less than 300 GBP.
   > > > Using DDR2100, XP2400 266, 40GB Western Digital 8Mb cache HD
   > > > (WD400JB), Case loaded with everything including an all important
   > > > compact flash slot.
  > >
  > > You're crippling the performance by buying PC2100. 256MB of Twinmos
 > PC2100
  > > is £30.50, PC2700 is £31, PC3200 is £32.50 (Tekheads.co.uk)
  > >
   > > > So in the end you're right, the Barton XP2500 is better but I need the
   > > > system to use it to the full at a bargain basement price.
  > >
  > > Ben
  > > --
  > > I'm not just a number. To many, I'm known as a String...
  > >
  > >
 >
 ><!-- ~MESSAGE_AFTER~ -->
 >> Stay informed about: XP2500 Barton running on 266 FSB? 

mdp wrote:
 > Given that it beeps with no memory, a long beep is the correct code,
 > I would first suspect the memory. Could be an incompatibility or
 > simply bad memory. Are you able to find another stick or try another
 > slot? The manual states it will not work with DIMMS that have more
 > than 18 chips.

Thats not really uncommon. There is usually some limit to the amount of
current you can source from (or sink to) a bus!

Ben
--
I'm not just a number. To many, I'm known as a String...<!-- ~MESSAGE_AFTER~ -->
 >> Stay informed about: XP2500 Barton running on 266 FSB?