Adobe have announced that they will be releasing their CS4 line in 64Bit Versions. They will not however be releasing the Mac OS X version in 64Bit until after the Windows Version. Where the 32 bit versions can generally only currently support 3-4 GB depending on the OS and application. After Effects supports up to 2 GB per processor on a multicore machine by assigning different processes to different cores. The 64-bit versions of Windows and Mac OS X 10.5 will potentially be able to access up to a theoretical limit of over 17 billion GB of RAM.