PR440FX, USB & Windows 2000

[RJB]

Has anyone tried this out???

It dosen't look too difficult.

RJB

B Weber <m...@via.www>
Date Sent 17 Oct 1999 03:00:48 GMT
Subject Re: PR440FX: USB, Win2000 & overclocking
Organization
This reads better,

Here is info on how to enable the PR440FX USB in Windows 2000

and to overclock the motherboard.

I have been running dual Pentium Pros @245MHZ under Windows 2000

with the USB enabled!

Here is what I found out about the PR440FX undocumented

jumpers:

system bus:

J12B1:

F up = 60 MHz

F dwn = 66 MHz

also J12B2:

5,6 shorted = normal(60, 66)

4,5 shorted = turbo(63, 70)

multiplier:

E up G dwn H up = 4X

E dwn G up H dwn = 3.5X

E dwn G dwn H dwn = 3X

E dwn G up H up = 2.5X

any other E G H = 2X

Here's how to enable PR440FX USB under Windows 2000:

In the PR440FX BIOS setup, under advanced chipset configuration subscreen:

1) change MP version to: 1.1

2) change PCI IRQ maping to: ISA legasy IRQs

Let me know if this works for you. It works great with my motherboard!

BW

[No Way]

USB - yes (it seems to work - Win2k saw the ports, but I don't have USB
devices).

Overclocking - no (personally, I don't believe in it).

RJB <m...@via.www> wrote in message news:7v30pp$cm$1...@news.cps.intel.com...

[Chris Cantwell]

USB will work with W2K on the PR440FX motherboard *only* if you set the PCI
IRQ mapping to "ISA Legacy IRQ". However, this disables the APIC interrupt
scheme, and forces the board to share interrupts on the PCI bus. Bummer.
This is a BIOS problem, and Intel is unlikely to rev the BIOS to fix this
problem.

Changing MP to 1.1 is not necessary, in fact you want MP set to 1.4 if you
have multiple CPU's.

The PR440FX can be overclocked with the right jumper settings, but I don't
recommend it unless you have some monster heat sinks (www.3dfx.com is a good
source) and/or you're willing to burn up your CPU's for a small performance
gain.

Chris

"RJB" <m...@via.www> wrote in message news:7v30pp$cm$1...@news.cps.intel.com...
> Has anyone tried this out???
>
> It dosen't look too difficult.
>
> RJB
>
>
> B Weber <m...@via.www>
> Date Sent 17 Oct 1999 03:00:48 GMT
> Subject Re: PR440FX: USB, Win2000 & overclocking
>

> I have been running dual Pentium Pros @245MHZ under Windows 2000
> with the USB enabled!

[Chris Boyd]

I don't know about that Chris.

I've tried B. Weber's settings and I have USB working and quite a performance boost too.

He first posted these suggestions about 2 months ago and I've been using them ever since then, and they work great on my PR440FX.

B. Weber also did mention something about switching back to MP 1.4 in another post. So your info isn't really anything new to me and I don't plan on changing a thing I'm doing.

I have USB in Windows 2000 (AND NO IRQ PROBLEMS), more speed and my CPU's are only warm to the touch using my stock heatsinks, that's all I care about.

Thanks B. Weber!!!!!

"Chris Cantwell" <cjcan...@rni.net>
Date Sent Wed, 10 Nov 1999 00:50:09 -0500
Subject Re: PR440FX, USB & Windows 2000
Organization

[Jim C]

It works great for me too!!

I'm at 245 MHZ with USB in Y2K!!!

B Weber <m...@via.www>
Date Sent 17 Oct 1999 03:00:48 GMT
Subject Re: PR440FX: USB, Win2000 & overclocking

Organization
This reads better,

Here is info on how to enable the PR440FX USB in Windows 2000

and to overclock the motherboard.

I have been running dual Pentium Pros @245MHZ under Windows 2000

with the USB enabled!

Here is what I found out about the PR440FX undocumented

jumpers:

system bus:

J12B1:

F up = 60 MHz

F dwn = 66 MHz

also J12B2:

5,6 shorted = normal(60, 66)

4,5 shorted = turbo(63, 70)

multiplier:

E up G dwn H up = 4X

E dwn G up H dwn = 3.5X

E dwn G dwn H dwn = 3X

E dwn G up H up = 2.5X

any other E G H = 2X

Here's how to enable PR440FX USB under Windows 2000:

[Carol & Mike Demirdjian]

I am in agreement with Chris Cantwell. The PR440FX can be overclocked with

the right jumper settings, but I don't

recommend it unless you're willing to burn up your CPU's for a small
performance gain and unreliabability.
----------------------------------------------------------------------------
-

USB will work with W2K on the PR440FX motherboard *only* if you set the PCI
IRQ mapping to "ISA Legacy IRQ". However, this disables the APIC interrupt
scheme, and forces the board to share interrupts on the PCI bus. Bummer.
This is a BIOS problem, and Intel is unlikely to rev the BIOS to fix this
problem.

Changing MP to 1.1 is not necessary, in fact you want MP set to 1.4 if you
have multiple CPU's.

The PR440FX can be overclocked with the right jumper settings, but I don't
recommend it unless you have some monster heat sinks (www.3dfx.com is a good
source) and/or you're willing to burn up your CPU's for a small performance
gain.

Chris

Jim C <m...@via.www> wrote in message news:80dlqk$m1h$1...@news.cps.intel.com...

[B Weber]

In the past when a Pentium Pro 200 cost $1500 I might have agreed with your statement on overclocking.

However, I paid only $26 each for my Pentium Pro 200s on onsale.com, they are to me in a word disposable. But after months of overclocking these chips to 245 MHZ, I have yet to see any problems or have a crash in NT.

I'm inclined to believe these chips can take 245MHZ and higher with no dammage.

But as I stated who cares, they are essentialy disposable. As for the small performance boost, I never noticed that, I noticed a substantial performance boost! Try it and see!

BW

[Carol & Mike Demirdjian]

B Weber <m...@via.www> wrote in message
news:80if91$r8n$1...@news.cps.intel.com...

> In the past when a Pentium Pro 200 cost $1500 I might have agreed with
your statement on overclocking.
>
> However, I paid only $26 each for my Pentium Pro 200s on onsale.com, they
are to me in a word disposable.

Because there are none being sold anymore, that makes them indispensable.

>But after months of overclocking these chips to 245 MHZ, I have yet to see
any problems or have a crash in NT.

If you operate the system in a fluctuating temperature environment
especially year round , the CPU will be unpredictable, unreliable causing
system errors and corrupted disk data.

> I'm inclined to believe these chips can take 245MHZ and higher with no
dammage.

Indeed, operating the CPU over spec. will damage your motherboard, burn out
the CPU due to current demands that cannot be addressed. This is due to and
connected with un upgradable in-board and onboard voltage regulation.

> But as I stated who cares, they are essentialy disposable. As for the
small performance boost, I never noticed that, I noticed a substantial
performance boost! Try it and see!

Again, the PPro CPUs are "not" disposable but indispensable due to high
quality and especially "unavailability". Your performance gain is corrupt
and will corrupt. The clock is ticking away so to speak. (smile)

The fact is what you do with your computer is your business, but this is a
support news group and suggesting to overclock, is passing bad advice to
other users.

>
> BW

[B Weber]

Carol & Mike Demird...

Your welcome to have your own opinion,
know matter how close minded it may be.

I believe in choice, not fear mongering or,
repeating corporate slogans.

BW

[Carol & Mike Demirdjian]

Bill, not to belabor the subject, but your PR440FX has one upgradeable VRM.
So unless you know the current draw on an overclocked PPro 200 at 245Mhz,
you can't even upgrade the one upgradeable VRM to the correct current
spececification. As for the other "inboard" CPU - VRM, that is not
upgradeable, I would guess it max'es from 12.5 to 14 amps. Therefore unless
you know that, that overclocked CPU is drawing 14 Amps or less, your screwed
with that processor as-well. If you don't believe me then you will have to
file a complaint with the Ohm's LAW committee.

B Weber <m...@via.www> wrote in message

news:80n9e1$qjq$1...@news.cps.intel.com...