Adobe Creative Suite 4
Adobe Creative Suite 4 (CS4) was announced on September 23, 2008, and officially released on October 15, 2008.[23] All applications in CS4 featured the same user interface, with a new tabbed interface for working with concurrently running Adobe CS4 programs where multiple documents can be opened inside multiple tabs contained in a single window.[24]
Adobe CS4 was also developed to perform better under 64-bit and multi-core processors. On MS Windows, Adobe Photoshop CS4 ran natively as a 64-bit application. Although they were not natively 64-bit applications, Adobe After Effects CS4 and Adobe Premiere Pro CS4 had been optimized for 64-bit computers.[25] However, there were no 64-bit versions of CS4 available for Mac OS X.[26] Additionally, CS4 was the last version of Adobe Creative Suite installable on the PowerPC architecture on Mac OS X,[27] although not all applications in the suite are available for PowerPC. The unavailable products on PowerPC include the featured applications within the Production Premium collection (Soundbooth, Encore, After Effects, Premiere, and OnLocation). In early testing of 64-bit support in Adobe Photoshop CS4, overall performance gains ranged from 8% to 12%, due to the fact that 64-bit applications could address larger amounts of memory and thus resulted in less file swapping — one of the biggest factors that can affect data processing speed.[28]