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PowerBook 1400c With Mysterious CPU

Schafeman

Well-known member
I acquired another 1400c, since my previous one I had purchased was DOA (now a parts machine).  The one I picked up this week (for practically nothing) had a bad hard drive and was extremely dirty but otherwise powered on.  Swapped in my spare 1400 hdd and it booted right up into OS 8.  The label on the front claims its a 1400c/166 but in the System Profiler it says it has a PowerPC 745 at 67mhz? I know the 745 is a G3, so apparently this has a G3 upgrade.  How can I figure out, besides disassembling the whole thing and pulling the CPU, what model upgrade this has so I can load the appropriate extensions? Seems very speedy already but the speed being reported strange has me intrigued.

 

MOS8_030

Well-known member
Just remove the heat sink and have a look. Probably don't need to dig any farther than that.

 

Trash80toHP_Mini

NIGHT STALKER
Great find! One of my G3 cards came from a cheap, beat up ugly duckling on eBay.

How much cache is reported? Sonnet has a utility for accurately reporting CPU info. So does one of the other mfrs.

 

Schafeman

Well-known member
Mystery solved!  Installing the Sonnet drivers did the trick, it has a Sonnet upgrade card, G3 @ 217mhz.  L1 Cache: 32k inst/32k Data, Secondary Cache: 512k/108mhz according to Metronome.  With the drivers installed, this thing FLIES with OS 8.  Very impressed.  

 
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