Coppermine O/c

Phil Weldon wrote:
> 'Poly-poly man' wrote, in part:
> | I'm trying to overclock an early Compaq (early as in like a 810E
> | chipset). I've o/c'd it before, with CpuCooL (got 600m to 670).
> _____
>
> Considering 900 MHz should be possible if you can just set the FrontSide Bus
> to 100 MHz, I'd look in another direction.
>
> If you have a Celeron 600 Slot 2 type CPU, then the CPU circuit board is
> easy to modify to increase the FrontSide Bus speed to 100 MHz. If you have a
> Pentium III 600 100 MHz FSB Slot 2 CPU, then it may be possible to get 133
> MHz X 6 = 800 MHz in the same way IF you can somehow make the motherboard
> continue to hold the PCI bus to under 37 MHz. The CPU core voltage can be
> changed in the same way, but it is not something that you will want to do
> more than once or twice. If you are interested in that kind of performance,
> post again and I am sure that one of us can dig up an old URL or directions
> for the modifications.
>
> Somewhere I have two 533a Celerons that ran quite happily with stock
> cooling, a small voltage increase, and a 100 MHz FSB giving 800 MHz. Since
> I had an overclocking friendly motherboard (which you definitely DO NOT
> have). For your motherboard (and any others before the Pentium 4 era) there
> is no way to lock the PCI bus speed, a FSB speed of about 112 MHz is the
> limit if the motherboard does not have a 133 MHz FSB capability because hard
> drives may start corrupting data.
>
> Phil Weldon
>
> "Poly-poly man" <pyrophobicman RemoveThis @gmail.com> wrote in message
> news:P2JSf.2966$TK2.2165@trnddc07...
> | I'm trying to overclock an early Compaq (early as in like a 810E
> | chipset). I've o/c'd it before, with CpuCooL (got 600m to 670). I'm
> | looking for a program that does exactly that, but has full features for
> | free (CpuCooL has to be reset every time I reboot; I want a setting that
> | will last!). Any programs like this? My PLL's a 9250-26A (or at least
> | worked with that setting before.)
> |
> | tia,
> | poly-p man
>
>

It's a 5bw120 compaq. Socket 370. The FSB is 66, CPU is x9. The farthest
I could go with CC was 74x9 (670). My point is that I don't want to
stick with it, I want to use another program. I'd rather use
easy-to-change hardware settings if there aren't software options.
How?

poly-p man
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'Poly-poly man' wrote:
| It's a 5bw120 compaq. Socket 370. The FSB is 66, CPU is x9. The farthest
| I could go with CC was 74x9 (670). My point is that I don't want to
| stick with it, I want to use another program. I'd rather use
| easy-to-change hardware settings if there aren't software options.
| How?
_____

So you do have a Celeron 600.
You haven't describe WHY you could not go higher than 670 MHz. The most
likely explanation is that above a clock speed of 74 MHz the PCI bus speed
would be above 37 MHz and the hard drive would begin to give problems. What
you have to do is force the FSB to 100 MHz which would also change the AGP
and PCI dividers to give 66 MHz and 33 MHz bus speeds respectively (which
are the standard speeds for the AGP and PCI buses.

You are not, I think, going to find a program that will force this change.
You will have to do it either with jumpers on the motherboard or by
modification of pins on your socket 370 CPU (which IS possible, but more
difficult than with a Slot 2 CPU.) You will need to get the manual for your
motherboard (at least the owner's manual) to find out about jumper settings.
With a Compaq there certainly will not be BIOS settings that change Speeds
and voltages, but there might be a jumper setting to force the FSB speed to
100 MHz while keeping the AGP bus at 66 MHz and the PCI bus at 33 MHz.

It is up to you how much effort you are willing to spend on a very small
overclock of 12% vs. a very large overclock of 50%. (There is also a
question of how your memory will perform at 100 MHz.)

No pain, no gain. Personally, I would go for a speed increase that would
make a noticable performance increase or just run the system at the stock
speed.

Phil Weldon

"Poly-poly man" <pyrophobicman.RemoveThis@gmail.com> wrote in message
news:KAWSf.558$vy.395@trnddc01...
| Phil Weldon wrote:
| > 'Poly-poly man' wrote, in part:
| > | I'm trying to overclock an early Compaq (early as in like a 810E
| > | chipset). I've o/c'd it before, with CpuCooL (got 600m to 670).
| > _____
| >
| > Considering 900 MHz should be possible if you can just set the FrontSide
Bus
| > to 100 MHz, I'd look in another direction.
| >
| > If you have a Celeron 600 Slot 2 type CPU, then the CPU circuit board is
| > easy to modify to increase the FrontSide Bus speed to 100 MHz. If you
have a
| > Pentium III 600 100 MHz FSB Slot 2 CPU, then it may be possible to get
133
| > MHz X 6 = 800 MHz in the same way IF you can somehow make the
motherboard
| > continue to hold the PCI bus to under 37 MHz. The CPU core voltage can
be
| > changed in the same way, but it is not something that you will want to
do
| > more than once or twice. If you are interested in that kind of
performance,
| > post again and I am sure that one of us can dig up an old URL or
directions
| > for the modifications.
| >
| > Somewhere I have two 533a Celerons that ran quite happily with stock
| > cooling, a small voltage increase, and a 100 MHz FSB giving 800 MHz.
Since
| > I had an overclocking friendly motherboard (which you definitely DO NOT
| > have). For your motherboard (and any others before the Pentium 4 era)
there
| > is no way to lock the PCI bus speed, a FSB speed of about 112 MHz is the
| > limit if the motherboard does not have a 133 MHz FSB capability because
hard
| > drives may start corrupting data.
| >
| > Phil Weldon
| >
| > "Poly-poly man" <pyrophobicman.RemoveThis@gmail.com> wrote in message
| > news:P2JSf.2966$TK2.2165@trnddc07...
| > | I'm trying to overclock an early Compaq (early as in like a 810E
| > | chipset). I've o/c'd it before, with CpuCooL (got 600m to 670). I'm
| > | looking for a program that does exactly that, but has full features
for
| > | free (CpuCooL has to be reset every time I reboot; I want a setting
that
| > | will last!). Any programs like this? My PLL's a 9250-26A (or at least
| > | worked with that setting before.)
| > |
| > | tia,
| > | poly-p man
| >
| >
|
| It's a 5bw120 compaq. Socket 370. The FSB is 66, CPU is x9. The farthest
| I could go with CC was 74x9 (670). My point is that I don't want to
| stick with it, I want to use another program. I'd rather use
| easy-to-change hardware settings if there aren't software options.
| How?
|
| poly-p man
 >> Stay informed about: Coppermine O/c 

~misfit~ wrote:

> Phil Weldon wrote:
>
>>'Poly-poly man' wrote:
>>
>>>It's a 5bw120 compaq. Socket 370. The FSB is 66, CPU is x9. The
>>>farthest I could go with CC was 74x9 (670). My point is that I don't
>>>want to stick with it, I want to use another program. I'd rather use
>>>easy-to-change hardware settings if there aren't software options.
>>>How?
>>
>>_____
>>
>>So you do have a Celeron 600.
>>You haven't describe WHY you could not go higher than 670 MHz. The
>>most likely explanation is that above a clock speed of 74 MHz the PCI
>>bus speed would be above 37 MHz and the hard drive would begin to
>>give problems. What you have to do is force the FSB to 100 MHz which
>>would also change the AGP and PCI dividers to give 66 MHz and 33 MHz
>>bus speeds respectively (which are the standard speeds for the AGP
>>and PCI buses.
>>
>>You are not, I think, going to find a program that will force this
>>change. You will have to do it either with jumpers on the motherboard
>>or by modification of pins on your socket 370 CPU (which IS possible,
>>but more difficult than with a Slot 2 CPU.) You will need to get the
>>manual for your motherboard (at least the owner's manual) to find out
>>about jumper settings. With a Compaq there certainly will not be BIOS
>>settings that change Speeds and voltages, but there might be a jumper
>>setting to force the FSB speed to 100 MHz while keeping the AGP bus
>>at 66 MHz and the PCI bus at 33 MHz.
>>
>>It is up to you how much effort you are willing to spend on a very
>>small overclock of 12% vs. a very large overclock of 50%. (There is
>>also a question of how your memory will perform at 100 MHz.)
>>
>>No pain, no gain. Personally, I would go for a speed increase that
>>would make a noticable performance increase or just run the system at
>>the stock speed.
>
>
> I have two socket 370 Celeron 600's here (cB0 and cC0 stepping) that both do
> 900MHz (100MHz FSB) happily (In slockets ans MSI 6163 Pro mobos). However,
> both require a reasonable vcore increase to do so. They both ran stably for
> ages at 900, now they sit in my drawer, running at 0. I still have the mobos
> running, now with Slot-T adapters and a 1.3GHz and a 1.4GHZ Tualatin Celeron
> respectively. Still overclocked a wee bit of course. The biggest problem
> with this era board is the PCI going too far out of spec and getting HDD
> problems. Therefore I can't go much over 110MHz FSB, my HDDs don't like
> it. However, for a while, I had the 1.4 running fine at 1.68GHz on a 120MHz
> FSB. However, after a few weeks HDD corruption problems occured. Had to
> re-install the OS and haven't gone above 110 since.

Yup, that's why I use P2B-series boards with onboard SCSI. You never
have to worry about HDD corruption because the SCSI controller gets a
nice stable 40Mhz clock regardless of what you do to the FSB or PCI clocks.

I'm running 150Mhz FSB no problem on numerous P2B systems here... even
those with SCSI RAID controllers in PCI slots - they were also designed
to run at 40Mhz.

My IDE connectors are full of dust - never had anything plugged into
them

P2B
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