is P60 right for me?
Justin Smith
I've been contemplating putting a type 4 P60 board in my PS/2
Model 90 XP 486, which currently houses a type 3 486DX50. My
concern is that the early Pentiums are known for their excessive
heat generation. Seeing as I already have a number of items in
my box that could be obstructing potential air paths (the 1.44
and a 6451017 5.25 Internal Adapterless Disk Drive on the top
row, and 2 SCSI drives on the bottom row), I'm not sure that
putting what amounts to a micro space heater in there would be
such a good idea. Any thoughts?
BTW, my new hard drive is literally "sitting" in there right
now... where can I find the appropriate tray doodad to clip it
in there?
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Tony Ingenoso
point on an otherwise fine machine).
(3) HDD, T1 w/cache/DX4, and a couple of card had one of mine audibly
gasping, so I took out two of the drives and it sounds much happier now.
Consider going *external* for the drives. A little 200M internal for IML
and boot, and everything else external might allow a P60 to survive power
wise, but cooling it may be an issue. It won't have a side fan blowing on
it in quite the same way as M95. M90 has a fan, but air flow design around
the complex is considerably different...
Tony
"Justin Smith" <jus10ws...@hotmail.com.invalid> wrote in message
news:12423170...@usw-ex0104-028.remarq.com...
Tony Ingenoso
the cooling on the P60/66's. The side fan provides bredth as well as force
. The T4 is a completely different beast thermally than a T2.
The L2's are pretty much out of the stream and they do run warm as does the
cache controller. I've rigged a P90 similar to Tam's with big sinks on the
L2's and cache controller for my 180MMX Overdrive experiments (that are
going on in a M90 at the moment<g>).
Tony
"Louis Ohland" <ohl...@inwave.com> wrote in message
news:38E3E4DA...@inwave.com...
>
>
> Tony Ingenoso wrote:
> >
> > Sounds like too much to me. The M90's only about a 90 watt PS (the weak
> > point on an otherwise fine machine).
>
> Uh, Tony, look at the sticker again. There were at least two
> diferent PSs- a 194 and a 215 W model.
>
> > Consider going *external* for the drives. A little 200M internal for
IML
> > and boot, and everything else external might allow a P60 to survive
power
> > wise, but cooling it may be an issue. It won't have a side fan blowing
on
> > it in quite the same way as M95. M90 has a fan, but air flow design
around
> > the complex is considerably different...
>
> Tony, that front fan on the 90 seems a helluva lot more
> forcefull than the wimpy side fan IMHO. He won't be able to
> use the blue air baffle, but maybe he can cobble one up out
> of pasteboard and Wisconsin Chrome (duct tape).
>
> The worst part about the 90's case is cable routing. If he
> can find a 76 or 77 cable with the braided sheath, I'd
> suggest popping the HPDB50 header off and crimping on the 50
> pin edgecard connector. I've done that, and it's S-O-O-O
> much easier.
Justin Smith
external enclosure for my second hard drive, that should take
some load off of the power supply. As for the P60, I think I'll
put that idea aside for a while.
As far as building an air baffle for my type 3, I'm not exactly
sure how that would work. In a type 1 it appears that the
baffle redirects air moving along the brown plastic wall from
the fan onto the chip area. But on a type 3, the processor is
on that second board which is out past the brown wall. I'm not
sure how I could devise a way to bend the air outwards to where
the chip is. If nothing else, I could put in an obstacle
that "extends" the brown wall out to the memory riser closer to
the processor... this would prevent air from "escaping" into the
drive area. Ideas anyone?
BTW, what is pasteboard exactly?
Louis Ohland
Cereal box cardboard.
Joe Kovacs
>As far as building an air baffle for my type 3, I'm not exactly
>sure how that would work. In a type 1 it appears that the
>baffle redirects air moving along the brown plastic wall from
>the fan onto the chip area. But on a type 3, the processor is
>on that second board which is out past the brown wall.
There are two different blue air baffles for the model 90, the
one for the Type 1 which you have, and the one for the Type 3.
You use one or the other baffle.
The one for the Type 3 looks like a lightweight shell of a
hard drive, with a sled. You take the HD out of the bottom
middle bay, put it into the top right bay so both bottom bays
are empty, and slide the blue baffle into the bottom right
bay. It directs air, as it comes into the bay, across the
middle bay onto the Processor complex. It's IBM p/n 04G3795,
and I bet it costs all of twelve dollars.
You can do the same thing by putting a piece of cardboard
kittycorner into the bottom right bay so it directs incoming
air onto the processor complex. Move the cables out of the
way. It's perfectly simple but it's looking like it's hard to
describe.
Joe Kovacs
Guelph Ontario Canada