03-11-2006, 04:42 AM
That would be it - Just finished BSG, or would have been here sooner. 
In most cases - if a module shows up as half size in an older machine - it's because your machine needs the lower density module type.
Just like a 512MB showing as 256MB, a 256MB build with 256MBit density devices shows as 128Mb. (512MB PC66/100/133 also typically built with 256MBit devices).
You need a 16x8 based (128MBit) 256MB module. It will have 16 chips vs. the 8 that the modules you have now have.
Nothing to do with the memory - it's what the memory controller can support.

In most cases - if a module shows up as half size in an older machine - it's because your machine needs the lower density module type.
Just like a 512MB showing as 256MB, a 256MB build with 256MBit density devices shows as 128Mb. (512MB PC66/100/133 also typically built with 256MBit devices).
You need a 16x8 based (128MBit) 256MB module. It will have 16 chips vs. the 8 that the modules you have now have.
Nothing to do with the memory - it's what the memory controller can support.