PPC 750 (G3) CPU in an IBM 43p-140 Boots Linux

From: greg (gkv_at_interflight.com)
Date: 07/06/03 

Date: Sun, 06 Jul 2003 15:25:37 -0500

I'm surprised I haven't seen any threads on this.

The socket on the IBM 43P-140 motherboard is the same as the Macintosh
Beige G3's and B&W G3's.

All I had to do was remove the cache SIMM, dropped a 300-mhz marked G3
in the socket and put the Mac heatsink on top (the 604e fan/heatsink's
clip was too short). I didn't have to change the VRM module.

Computer turned on ok and booted Linux (2.4.19 kernel) no problems.

>From cpuinfo:

cpu : 740/750
clock : 166MHz
revision : 2.2 (pvr 0008 0202)
bogomips : 398.13
machine : PReP IBM 43P-140 (Tiger1)
upgrade cpu : not present
scsi fuse : ok
simms : 0:128MiB
l2 cache : not present

Not sure why it's reporting 166mhz.

The original 604e cpuinfo file:

cpu : 604e
clock : 199MHz
revision : 2.2 (pvr 0009 0202)
bogomips : 398.13
machine : PReP IBM 43P-140 (Tiger1)
upgrade cpu : not present
scsi fuse : ok
simms : 0:128MiB
l2 cache : sync burst, parity, 1MiB

I tried Byte Benchmarks, and the performance is roughly the same.

The difference is the G3 CPU runs alot cooler than the 604e.

Haven't tried AIX yet.