[G4] Memory Mixing Problems (pc100 & pc133)

[Casey Coulon]

Hello everyone,

I am trying to add additional memory to my G4 450 AGP. I have 3 128mb 
pc100 chips installed and am trying to add a 512mb pc133. I placed the 
new 512 in the 4th slot (DIMM3/J24) when I tried it. System ran fine 
for about 2 hours after installation, then programs began to crash at 
random. After a restart, the entire system started locking up and I had 
to use the reset button each time to restart. I finally pulled the 
chip, repaired permissions and now everything is fine once again.

I looked on the G4 forum and several other people have mixed memory 
(both pc100 and pc133) and they work great. Apple web site says to use 
only pc100 on a G4 450 AGP, but other web sites say its ok to use 
pc133. Any ideas? Thanks for your help.

Here is my G4's info:

   System Version:		Mac OS X 10.3.7 (7S215)
   Kernel Version:		Darwin 7.7.0
   Machine Model:		Power Mac G4 (AGP graphics)
   CPU Type:			PowerPC G4  (2.8)
   Number Of CPUs:		1
   CPU Speed:			450 MHz
   L2 Cache (per CPU):		1 MB
   Memory:				384 MB
   Bus Speed:			100 MHz
   Boot ROM Version:		4.2.8f1

Details on currently installed memory:

DIMM0/J21:
   Size:	128 MB
   Type:	SDRAM
   Speed:	PC100-322S

DIMM1/J22:
   Size:	128 MB
   Type:	SDRAM
   Speed:	PC100-333S

DIMM2/J23:
   Size:	128 MB
   Type:	SDRAM
   Speed:	PC100-333S

DIMM3/J24:
   Size:	Empty
   Type:	Empty
   Speed:	Empty

Thanks again.

Casey
-----
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