Overclocking PWS500/jumpers? - Linux

This is a discussion on Overclocking PWS500/jumpers? - Linux ; To the list, Irecently got a second PWS500a/u, this one a GL model with the USB ports. I'd heard that the Miatas can be overclocked and decided to try it with the older machine. I got a list of jumper ...

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Thread: Overclocking PWS500/jumpers?

  1. Overclocking PWS500/jumpers?

    To the list,

    Irecently got a second PWS500a/u, this one a GL model with the USB
    ports. I'd heard that the Miatas can be overclocked and decided to
    try it with the older machine.

    I got a list of jumper settings posted on comp.sys.dec August 15, 2002
    by Marco Nuessgen. I eBayed a 533mhz cpu as a spare, it arrived today
    so I decided to try o'clocking it.

    I put in the 533 (it has a PC 164 heat sink on it) with the Miata heat
    sink, and set the jumpers to what was supposed to be 600 mhz.

    The setting I used is below:

    00000101 1 being up and 0 being down, relative to the bottom of the
    MoBo.

    Show Config indicated the CPU was running at 533. I tried booting
    Linux, the kernel got lost looking for the PCI bus. I took the CPU
    out. It was pretty warm, considering it had been running a few minutes
    under light load.

    I put the old CPU in with heat sink. It ran a lot cooler but still
    would only go 533. I didn't bother trying to boot, alhtough I bet I
    could've got Windows 2000 to come up off ARC.

    I noticed that the little silver heat transfer sheet, which had never
    melted under the 500 cpu in 5 years of active use, had fused to the
    new 533 CPU.

    Marco's post showed the following jumper settings

    433 01011001
    500 01111001
    600 00000101

    does anyone know if these are right? If so, are my CPUs somehow
    internally limited for clock speed?

    Unlike on a PC, changing the CPU frequency on the Miata seems to
    change some IRqs as well as PCI and memory frequencies. So I guess a
    successful overclock means some pretty serious reworking of my Linux &
    Tru64 OSes, maybe even a rip-out and re-install?

    Well, has anyone else tried this? How did it go?

    Thanx

    jn

  2. Re: Overclocking PWS500/jumpers?

    Il Mon, 08 Dec 2003 22:36:31 -0800, jon_norstog ha scritto:

    > To the list,
    >
    > Irecently got a second PWS500a/u, this one a GL model with the USB ports.
    > I'd heard that the Miatas can be overclocked and decided to try it with
    > the older machine.


    Nonsense on a workstation.
    Let kids overclock their peecees

    Bye!
    gl

  3. Re: Overclocking PWS500/jumpers?

    Tis is a followup to my own msg.

    A search of the axp-list@redhat.com arhcives found the following from
    1999:

    ************************************************** *****************************
    From: Mark Brown
    To: axp-list redhat com
    Subject: Overclocking a PWS 433au ?
    Date: Wed, 22 Dec 1999 10:22:51 +1030 (CST)

    --------------------------------------------------------------------------------

    This machine is running as our main departmental server but is falling
    sadly behind in the clock speed stakes :-( I had hoped to try it at
    500MHz.

    Earlier in the year Jeff DeMaagd posted a list of settings as follows
    Known Calculated Calculated Status
    Values Values Values

    Left to Right Left to
    Right to Left Right

    CLK MMMM MMM MMM MMMM MMMM MMM
    RATE 6543 210N N012 3456 6543 210N

    266 -> -> 1001 0000 -> 0000 1001 - not tested
    300 -> -> 1001 0010 -> 0100 1001 - not tested
    333 -> -> 1001 0100 -> 0010 1001 - not tested
    366 -> -> 1001 0110 -> 0110 1001 - not tested
    400 -> -> 1001 1000 -> 0001 1001 - not tested
    433 -> 0101 1001 -> 1001 1010 -> 0101 1001 - PWS 433a
    466 -> -> 1001 1100 -> 0011 1001 - didn't work
    500 -> 0111 1001 -> 1001 1110 -> 0111 1001 - PWS 500a - orig system
    533 -> -> 1010 0000 -> 0000 0101 - PWS 533a
    566 -> -> 1010 0010 -> 0100 0101 - PWS 566a
    600 -> -> 1010 0100 -> 0010 0101 - stalled on boot
    633 -> -> 1010 0110 -> 0110 0101 - not tested
    667 -> -> 1010 1000 -> 0001 0101 - not tested
    700 -> -> 1010 1010 -> 0101 0101 - not tested
    733 -> -> 1010 1100 -> 0011 0101 - not tested
    766 -> -> 1010 1110 -> 0111 0101 - not tested - Kryotech?
    800 -> -> 1011 0000 -> 0000 1101 - get a life. Or an
    XP1000.

    and I have been waiting to try it out but haven't had the chance until
    now.
    Sadly the settings don't seem to work. The existing settings for 433
    are
    as above but inverted - ON on the switch bank is the side away from
    the processor.
    I tried various related combinations but none seem to work. I am
    assuming there
    is no difference at this level between a 433a and a 433au - I think
    that is
    just the boot firmware.

    I get various disk noises like it might be booting but get no video
    except with the original settings - a Matrox Millenium II in a PCI64
    slot,
    looks like the original TGA2 card will spend its entire life in a
    cardboard box :-(.
    I haven't been game to leave it on long enough to maybe boot and see
    if it appears
    on the net in case I am doing something nasty to it!

    So if anyone has any hints on what else I might try or why maybe it
    might be working
    but there is some reason for there being no video signal .......

    Thanks,

    Mark.

    .... and a Merry Christmas to all ...

    ************************************************** ********************

    So I guess I'll try some of those settings.

    later

    jn



    thursday@allidaho.com (jon_norstog) wrote in message news:...
    > To the list,
    >
    > Irecently got a second PWS500a/u, this one a GL model with the USB
    > ports. I'd heard that the Miatas can be overclocked and decided to
    > try it with the older machine.
    >


  4. Re: Overclocking PWS500/jumpers?

    Follow-up:

    I used the 600 mhz setting in the left-hand column below with my $20
    eBay CPU. SRM recognized the CPU as 600mhz. Unlike 533mhz, the
    machine booted RedhAT 7.2 without hesitation. AlphaBios took some
    time reconfiguring, after which W2K came up in its usual clunky way.

    The improvement in speed was noticeable, with no stability problems
    under either OS. The CPU was good and warm, maybe 125-130 F- same
    temp as it ran at its rated 533.

    I will run it a monhth and maybe post an update.

    jn


    >
    > Earlier in the year Jeff DeMaagd posted a list of settings as follows
    > Known Calculated Calculated Status
    > Values Values Values
    >
    > Left to Right Left to
    > Right to Left Right
    >
    > CLK MMMM MMM MMM MMMM MMMM MMM
    > RATE 6543 210N N012 3456 6543 210N
    >
    > 266 -> -> 1001 0000 -> 0000 1001 - not tested
    > 300 -> -> 1001 0010 -> 0100 1001 - not tested
    > 333 -> -> 1001 0100 -> 0010 1001 - not tested
    > 366 -> -> 1001 0110 -> 0110 1001 - not tested
    > 400 -> -> 1001 1000 -> 0001 1001 - not tested
    > 433 -> 0101 1001 -> 1001 1010 -> 0101 1001 - PWS 433a
    > 466 -> -> 1001 1100 -> 0011 1001 - didn't work
    > 500 -> 0111 1001 -> 1001 1110 -> 0111 1001 - PWS 500a - orig system
    > 533 -> -> 1010 0000 -> 0000 0101 - PWS 533a
    > 566 -> -> 1010 0010 -> 0100 0101 - PWS 566a
    > 600 -> -> 1010 0100 -> 0010 0101 - stalled on boot
    > 633 -> -> 1010 0110 -> 0110 0101 - not tested
    > 667 -> -> 1010 1000 -> 0001 0101 - not tested
    > 700 -> -> 1010 1010 -> 0101 0101 - not tested
    > 733 -> -> 1010 1100 -> 0011 0101 - not tested
    > 766 -> -> 1010 1110 -> 0111 0101 - not tested - Kryotech?
    > 800 -> -> 1011 0000 -> 0000 1101 - get a life. Or an
    > XP1000.


  5. Re: Overclocking PWS500/jumpers?


    "jon_norstog" wrote in message
    news:f9b3265.0312101038.6c70cc54@posting.google.co m...
    > Follow-up:
    >
    > I used the 600 mhz setting in the left-hand column below with my $20
    > eBay CPU. SRM recognized the CPU as 600mhz. Unlike 533mhz, the
    > machine booted RedhAT 7.2 without hesitation. AlphaBios took some
    > time reconfiguring, after which W2K came up in its usual clunky way.
    >
    > The improvement in speed was noticeable, with no stability problems
    > under either OS. The CPU was good and warm, maybe 125-130 F- same
    > temp as it ran at its rated 533.
    >
    > I will run it a monhth and maybe post an update.
    >
    > jn
    >


    Ive been running my 21164 533MHz (on a Ruffian board) at 633MHz for several
    months, no problems to report. I changed the stock fan to a more meaty (tho
    unfortunately noisy) model. It should also be noted, I dont do anything
    "important" on this machine!

    It will post at 667 but crashes shortly after post.


    Matt



  6. Re: Overclocking PWS500/jumpers?

    "gl " wrote in message news:...
    > Il Mon, 08 Dec 2003 22:36:31 -0800, jon_norstog ha scritto:
    >
    > > To the list,
    > >
    > > Irecently got a second PWS500a/u, this one a GL model with the USB ports.
    > > I'd heard that the Miatas can be overclocked and decided to try it with
    > > the older machine.

    >
    > Nonsense on a workstation.
    > Let kids overclock their peecees
    >
    > Bye!
    > gl


    ARE YOU A CHILD ABUSING BASTARD?

  7. Re: Overclocking PWS500/jumpers?

    > > Nonsense on a workstation.
    > > Let kids overclock their peecees
    > >
    > > Bye!
    > > gl

    >
    > ARE YOU A CHILD ABUSING BASTARD?


    Are you a crack smoker?



  8. Re: Overclocking PWS500/jumpers?

    "Jafir Elkurd" wrote in message news:...
    > > > Nonsense on a workstation.
    > > > Let kids overclock their peecees
    > > >
    > > > Bye!
    > > > gl

    > >
    > > ARE YOU A CHILD ABUSING BASTARD?

    >
    > Are you a crack smoker?


    yes, and also heroin and speed

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