Re: PWS333i+ upgrades
From: Ben Myers (_at_)
Date: 08/04/04
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Date: Wed, 04 Aug 2004 01:49:12 GMT
Rich,
PowerLeap generally plays it straight with potential customers. If they were
non-committal about a Celery 333 working, they may well have run into issues
before with DEC BIOSes. Somehow or other, either in its relationship with the
Phoenix BIOS people or due to its own loss of engineering focus, the later DEC
BIOSes could always be surprising.
The Multia produced a lot of heat in its time. Today's computers of comparable
size run cooler because the important components (CPU & memory) run at much
lower voltages... Ben Myers
On 3 Aug 2004 08:39:08 -0700, jordan@ccs4vms.com (Rich Jordan) wrote:
>The one recommendation I got from Powerleap was for a Celeron 733,
>which they had at the time, but they were very noncomittal about it
>working. And it remained far too expensive for such an old system.
>
>I actually ran the Intel Multia/Powerleap at 400MHz with a tall cooler
>and high volume cooling fan. That would not fit in the case.
>Powerleap also provided a very low profile cooler (at my request),
>which proved unusable at over 233MHz. I installed a low profile all
>copper cooler with fan which allowed me to run without cutting the
>case, but limited the reliable speed to 333MHz when closed, and 366MHz
>with the lid off. I didn't want to cut the lid to fit a tall cooler
>at the time, though in retrospect I could have either drilled a grille
>pattern over the CPU, or cut a hole and installed a wire grille, then
>used foam tape to 'seal' the fan to the lid. Wasn't worth it for the
>10% increase in speed. I had opened up the grille on the side where
>the stock fan exhausted to improve overall airflow.
>
>I did also attach a small aluminum heat sink to the video chip, which
>ran blazingly hot, using double face thermal tape. It helped (no
>screen jittering after long runtimes).
>
>The box was very reliable (as far as any box running windows is) and
>usable with NT for browsing and 'general' nongame purposes. It has
>long since been ebay'd.
>
>Still have two Alpha UDBs on the shelf that I need to decide what to
>do with...
>
>Rich
>
>ben_myers_spam_me_not @ charter.net (Ben Myers) wrote in message news:<410ed978.15427880@news.charter.net>...
>> The 333i+, based on the 440LX chipset, is limited to CPUs which run at 66MHz
>> front-side bus. The fastest ever 66MHz FSB CPU is the 766MHz Celeron, a Socket
>> 370 beast. But if the 333i+ BIOS gets in the way, well, then the 333s are it.
>> I ran into similar difficulties with Intel's (!) 333MHz Pentium Pro OverDrive
>> installed in a Celebris 6200. It just did not work right.
>>
>> If you really want to push the Multia, running the risk of burning out some
>> motherboard component or other, I'm fairly sure that a genuine AMD K6-2 rated at
>> 400MHz can be coaxed to run at full rated speed with the right jumper settings.
>> I've managed to achieve this on some other Socket 7 motherboards... Ben Myers
>>
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