On Jan 19, 2009, at 7:23 PM, Bruce wrote:

> QS memory should be PC133 only.
>
> If two of your DIMMs are are actually
> PC100s, that could be a problem.
>
> If two of your DIMMs are marked PC133,
> but the QS only sees them as PC100s,
> that is a problem.
>
> The two DIMMs that are reading as PC100s,
> are they marked PC100, or PC133?

There are numerous reports of System Profiler mistakenly reporting  
true PC133 mistakenly as PC100. Various versions of OS X vary between  
them, so Jaguar may report correctly and Panther incorrectly. I think  
if you can read the speed of the individual chips on the DIMM this  
will tell you the true speed, but I agree you should have all PC133  
sticks, so if any are truly PC100 that's a problem.


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