[G4] G4 RAM Eccentricities

Al Poulin alpoulin at cox.net
Mon Jun 30 16:29:27 PDT 2008

There are a number of possibilities.  Perhaps your Digital Audio is  
running  OS X which is less tolerant of non-standard manufacture RAM  
where the design did not adhere strictly to standard specifications.   
Perhaps your sticks are not all of the same manufacture.

Al Poulin

On Jun 29, 2008, at 1:34 PM, Mike Bechtold wrote:
> Yesterday, I picked up three sticks of 512MB PC-133 RAM to max out my
> Digital Audio from a local computer repair guy. I took a G3 iMac with
> OS9.2.2 with me as a portable memory tester, and that system
> successfully recognized all three sticks.
> But when I installed them in my G4 Digital Audio, one stick prevents  
> the
> system from booting past the post chime - but only when it's installed
> in the RAM socket right next to the first PCI slot. If I install in on
> the third slot, all three work fine.
> I'm a graduate EE with thirty five years of electronics experience,  
> and
> I've dealt with a lot of funny stuff. But this one's got me puzzled.
> I'm not worried as long as the system works, but curious. Does anyone
> have any suggestions as to why this might be happening? Is it a
> capacitive loading issue, something in the mobo, or ???
> Thanks for any enlightenment you might provide!

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