29 Aug
2003
29 Aug
'03
1:28 a.m.
This system may not be 10 years old, but hopefully someone can answer
this for me anyway...
Quick one here. I have one of those EB64/PC64 motherboards, but only a
200MHz CPU for it. Problem is, the board is set up for a 266MHz CPU. Has
anybody overclocked a 200MHz CPU to 266 in one of these? With
appropriate fans for good cooling, of course.
Also, these boards can run off of a regular AT style power
supply, correct?
--
--- Dave Woyciesjes
--- ICQ# 905818
30 Aug
30 Aug
11:44 a.m.
On Fri, 29 Aug 2003, David Woyciesjes wrote:
Quick one here. I have one of those EB64/PC64
motherboards, but only a
200MHz CPU for it. Problem is, the board is set up for a 266MHz CPU. Has
anybody overclocked a 200MHz CPU to 266 in one of these? With
appropriate fans for good cooling, of course.
Why not set the board for a 200Mhz. CPU? That's one of the documented
options.
Also, these boards can run off of a regular
AT style power
supply, correct?
I'm not so sure about that. IIRC, this thing requires more 3.3V current
capacity than an off-the-shelf power supply could muster. I've yet to see
a 'mini' (aka tower) AT supply which delivered 10A @ 3.3V. I had to buy a
special supply in order to get mine going.
Steve
12:42 p.m.
From: "Steven N. Hirsch"
<shirsch(a)adelphia.net>
To: cctech(a)classiccmp.org
Cc: ClassicCMP <cctalk(a)classiccmp.org>
Subject: Re: Alpha PC64 hardware question...
Reply-to: cctalk(a)classiccmp.org
Date: Sat, 30 Aug 2003 19:37:15 -0400 (EDT)
On Fri, 29 Aug 2003, David Woyciesjes wrote:
Sounds like you haven't checked out Antec's truepower supplies yet.
Adapting ATX plug to this AT plugs using cut off ATX extension
spliced to AT plugs is trivial. Power on wire is active low, pull
that down to ground to turn on.
Oh, yes, they do have seperate AT style plug for 3.3V function.
Antec's truepower series design is seperate 3.3V and 5V circuits, not
combined, most typical power supplies even branded except Antec
are not good. Easy to see if label says combined max wattage for 5V
and 3.3V then it is shared circuit which is not what u want.
Cheers,
Wizard
Quick one here. I have one of those EB64/PC64
motherboards, but only a
200MHz CPU for it. Problem is, the board is set up for a 266MHz CPU. Has
anybody overclocked a 200MHz CPU to 266 in one of these? With
appropriate fans for good cooling, of course.
Why not set the board for a 200Mhz. CPU? That's one of the documented
options.
Also, these boards can run off of a
regular AT style power
supply, correct?
I'm not so sure about that. IIRC, this thing requires more 3.3V current
capacity than an off-the-shelf power supply could muster. I've yet to see
a 'mini' (aka tower) AT supply which delivered 10A @ 3.3V. I had to buy a
special supply in order to get mine going.
Steve
2 Sep
2 Sep
1:36 a.m.
"Steven N. Hirsch" wrote:
Really? Well, I do have a lead on a dead system with the appropriate
power supply (working) and I believe a 275 MHz chip in it. Looks like
this will solve my problem properly! Woo hoo!
--
--- Dave Woyciesjes
--- ICQ# 905818
On Fri, 29 Aug 2003, David Woyciesjes wrote:
I would, except I don't have the required PLL and crystal parts for it.
Quick one here. I have one of those
EB64/PC64 motherboards, but only a
200MHz CPU for it. Problem is, the board is set up for a 266MHz CPU. Has
anybody overclocked a 200MHz CPU to 266 in one of these? With
appropriate fans for good cooling, of course.
Why not set the board for a 200Mhz. CPU? That's one of the documented
options. Also,
these boards can run off of a regular AT style power
supply, correct?
I'm not so sure about that. IIRC, this thing requires more 3.3V current
capacity than an off-the-shelf power supply could muster. I've yet to see
a 'mini' (aka tower) AT supply which delivered 10A @ 3.3V. I had to buy a
special supply in order to get mine going.
Steve 
4:32 a.m.
On 2003.09.02 15:28 David Woyciesjes wrote:
Change the PLL? PLLs are there that you don't need to change
anything
beside some jumpers and perhaps a crystal. On the EB164, e.g., the PLL
has a fixed ratio of 1:10 so you allways need a crystal that is 1/10 of
the CPU clock. The jumpers are there to set the CPU to IO clock ratio.
--
tsch??,
Jochen
Homepage: http://www.unixag-kl.fh-kl.de/~jkunz/
Why not set
the board for a 200Mhz. CPU? That's one of the
documented options.
I would, except I don't have the required PLL and
crystal
parts for it.
5:03 a.m.
Jochen Kunz wrote:
On 2003.09.02 15:28 David Woyciesjes wrote:
Change the PLL? PLLs are there that you don't need to change
anything
beside some jumpers and perhaps a crystal. On the EB164, e.g., the PLL
has a fixed ratio of 1:10 so you allways need a crystal that is 1/10 of
the CPU clock. The jumpers are there to set the CPU to IO clock ratio.
--
Well, I may be wrong about what the parts are called, but I do need to
get two parts in order to use a 200MHz CPU on the board. But since it
looks like I'll be getting my hands on a 275MHz CPU, it doesn't matter
now... :)
--
--- Dave Woyciesjes
--- ICQ# 905818
Why not
set the board for a 200Mhz. CPU? That's one of the
documented options.
I would, except I don't have the required PLL and
crystal
parts for it.
7553
days inactive
7557
days old
5 comments
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participants (4)
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dwoyciesjes＠comcast.net -
jkunz＠unixag-kl.fh-kl.de -
jpero＠sympatico.ca -
shirsch＠adelphia.net