Most of the Adobe Creative Suite 4 applications have enhanced features designed to take advantage of your display card's GPU (Graphics Processing Unit) to accelerate application performance.

This is the first commercial software we are aware of that leverages GPU acceleration, which dramatically improves the performance of certain components of the application. Features such as Camera Raw support and image blending were improved, 64-bit and 3D support added.

Changes made through image zoom and through a new rotate canvas tool were applied almost instantly. Another wonderful feature was the import of a 3D model into Photoshop, adding text and paint on a 3D surface and having that surface directly rendered with the 3D models’ reflection map.

The display cards that were tested and are supported in Photoshop CS4 are listed in "List of tested graphics display cards in Photoshop CS4" .

Note: Photoshop CS4 takes advantage of only one GPU on your display card, even if more GPUs are present.

Click here to read more about the Support.

Photoshop CS4 -System Requirements. (Based on the Adobe)

Windows

• 1.8GHz or faster processor
• Microsoft® Windows® XP with Service Pack 2 (Service Pack 3 recommended) or Windows Vista® Home Premium, Business, Ultimate, or Enterprise with Service Pack 1 (certified for 32-bit Windows XP and 32-bit and 64-bit Windows Vista)
• 512MB of RAM (1GB recommended)
• 1GB of available hard-disk space for installation; additional free space required during installation (cannot install on flash-based storage devices)
• 1,024x768 display (1,280x800 recommended) with 16-bit video card
• Some GPU-accelerated features require graphics support for Shader Model 3.0 and OpenGL 2.0
• DVD-ROM drive
• QuickTime 7.2 software required for multimedia features
• Broadband Internet connection required for online services*.

Mac OS

• PowerPC® G5 or multicore Intel® processor
• Mac OS X v10.4.11–10.5.4
• 512MB of RAM (1GB recommended)
• 2GB of available hard-disk space for installation; additional free space required during installation (cannot install on a volume that uses a case-sensitive file system or on flash-based storage devices)
• 1,024x768 display (1,280x800 recommended) with 16-bit video card
• Some GPU-accelerated features require graphics support for Shader Model 3.0 and OpenGL 2.0
• DVD-ROM drive
• QuickTime 7.2 software required for multimedia features
• Broadband Internet connection required for online services*

Adobe uses Graphics Chip for faster Photoshop CS4. Photoshop is a famously taxing piece of software, but beginning with the upcoming CS4 version, it'll be able to employ the muscle of your computer's graphics chip for the first time. The new version of Adobe's this flagship software product takes its first steps in using the graphics processing unit.

The graphics chip helps Photoshop CS4 for zoom in and out, rotate the canvas so artists can do a image for the best sketching angle, display and manipulate 3D objects, and handle color correction and etc.

Photoshop CS4 leverages the graphics display card's GPU, instead of the computer's main processor (the CPU) to speed its screen redraw. For Photoshop to access the GPU, your display card must contain a GPU that supports OpenGL and has enough RAM to support Photoshop functions--at least 128 MB of RAM--and a display driver that supports OpenGL 2.0 and Shader Model 3.0. Read detail...

I would like to share some of important Videos about Photoshop CS4.

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Photoshop CS4 Zooming and Panning



Adobe Photoshop CS4: 3D Capabilities



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Photoshop CS4 new Retouching Tools



Using the New Layer Palette in Photoshop CS4



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Using 3D in Photoshop CS4



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Photoshop CS4 - Layout

Download Photoshop CS4

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