How much RAM can Cubase 4 take advantage of? 16Gigs?

Cubase4 isn't a 64 bit application you cannot use all 16 GB. 4 GB is the maximum for a 32 bit application on a Mac
On PC Cubase can address only 2GB . Windows XP can address max. 4GB but can only assign max. 2GB (as standard) to a single process (or application)..

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