MOTU confirms they’re working on a 64-bit version of Digital Performer and their plug-ins. Today, Apple quietly released Logic 9.1 and MainStage 2.1, providing 64-bit support. But you don’t get native, 64-bit memory – yet. A few tools, like Apple’s EXS24 and Native Instruments’ Kontakt samplers, can address greater memory through the use of virtual memory and memory server schemes. By contrast, under the current Mac OS, each 32-bit application can access up to 4GB of RAM. 64-bit computing offers marginal (but measurable) performance improvements, and more importantly the ability to address more RAM - a lot more RAM, currently more than is even physically available in any shipping consumer computer. Mac OS X Snow Leopard (10.6) represents the end of a long-running transition of the Mac operating system from 32-bit to 64-bit support.
