On 3/21/02 12:37, "Terry Allen" <[EMAIL PROTECTED]> wrote:

> Just at the moment, I can pick up a Powerlogix Powerforce G3 400
> for use in my 7300 for US$120 + freight - can anyone recommend if this is a
> good card for that machine or should I look to some other brand such as
> Sonnet etc...

Hey Terry!

YMMK, as another poster said different systems act differently

I have used a Powerlogix G3 ZIF and ZForce carrier for about 1.5 years now.
One of the two pieces has 512K of L2 cache. It has been in a PM 7200, 7600
and now a 8600. These two items are no longer supported by Powerlogix as
they can not get faster chips, reasonably.

Theoretically, this combo can reach 500 Mhz and a faster bus speed. 350 is
the ceiling _my Macs_ have found. It runs stable below the 155 F range, but
beyond that, no. I did have an extra fan installed in the 7600. The 8600
comes with a pusher and a puller.

It has been stable up to 350 MHz and 175 MHz on the cache. Beyond that it is
not stable. I think that I have bumped up the bus speed and gotten away with
a little bit more, in the past.

When I put it into the 8600 I was having fits trying to get it to boot. Even
at lower speeds. There was some weird conflict, that was preventing it to
boot or even chime. I could not even boot with the Extensions off. I had to
pull the card and reinstall a 200Mhz Apple card, change the extensions and
try again. I had even pulled all non-stock PCI cards and drives, and all
SCSI, USB & FW connections.

Finally I installed Sonnets software and all of the conflicts went away.
Tried it with my old extension set, except the Powerlogix, and it was fine.
Still would not boot above 350 Mhz.

I switched away from the Powerlogix Profiler before, because when monitoring
the chip's temperature, only Powerlogix caused the temp to jump 8F by just
starting up, and the least accurate.

I wanted to it to try as stock a set up as possible and to see if I could
get sustain higher speeds.

It is a nice speed bump for the 8600/200 mobo. The 8600/250 and 300 used a
different mobo.

HTH, (& promise no more Volvo stories. < Off list story.)

Brent


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