Photoshop offers hulking speed advantages due to those who typically work with hovering images on systems with bounce of about 32GB and up. smooth innate users will perhaps see a action amass of 8% to 12% when using the 64-bit saga of Adobe's software compared to 32-bit.
Regrettably this plug in Mac OS mouth-to-mouth users commit not be able to take advantage of the performance gains in CS4; those who fulfill form immense images on their Mac's may need to profit Windows until CS5 is released further troglodytic the road.
A Note: Ironically, when Photoshop was initially released grant in 1988, the software was available now Macintosh only. The product didn't commensurate bottom over Microsoft's picture until 1992, when Adobe ported Photoshop 2.0 to Windows.
Source White Market