About Photoshop

Adobe Photoshop is an image-editing program that can open an image captured by a scanner or digital camera, or downloaded from the Web. It can also open captured video images and vector illustrations. In addition, you can create new documents in Photoshop, including vector graphics, which are scalable image files (for example, the images can be enlarged or reduced in size with no loss of clarity)    

Photoshop CS6 comes in two versions: Adobe Photoshop CS6 and Adobe Photoshop CS6 Extended. The Extended version offers everything you find in Photoshop CS6, along with additional tools for editing video, motion-graphics, 3-D content, and performing image analysis.

N.B There is features that are available only in the extended version.

http://prodesigntools.com/whats-the-difference-photoshop-cs6-vs-photoshop-cs6-extended.html

      
Photoshop CS6 system requirements

Windows

•Intel® Pentium® 4 or AMD Athlon® 64 processor

•Microsoft® Windows® XP with Service Pack 3 o rMicrosoft Windows 7 with Service Pack 1. Adobe® Creative Suite® 5.5 and CS6 applications also support Windows 8 and Windows 8.1. See the CS6 FAQ for more information about Windows 8 support.*

•1 GB of RAM

•1 GB of available hard-disk space for installation; additional free space required during installation (cannot install on removable flash storage devices)

•1024 x 768 display (1280 x 800 recommended) with 16-bit color and 512 MB (1 GB recommended) of VRAM

•OpenGL 2.0–capable system

•DVD-ROM drive

•This software doesn't operate without activation. Broadband Internet connection and registration are required for software activation, validation of subscriptions, and access to online services.

Mac OS

•Multicore Intel processor with 64-bit support

•Mac OS X v10.6.8 or v10.7. Adobe Creative Suite 3, 4, 5, CS5.5, and CS6 applications support Mac OS X v10.8 or v10.9 when installed on Intel-based systems.**

•1 GB of RAM

•2 GB 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 removable flash storage devices)

•1024 x 768 display (1280 x 800 recommended) with 16-bit color and 512 MB (1 GB recommended) of VRAM

•OpenGL 2.0–capable system

•DVD-ROM drive

•This software doesn't operate without activation. Broadband Internet connection and registration are required for software activation, validation of subscriptions, and access to online services.

Reference

System requirements: Photoshop (2015) Retrieved from https://helpx.adobe.com/photoshop/system-requirements.html#main_Photoshop_CS6_system_requirements

Adobe Photoshop Family (2015) http://www.adobe.com/products/photoshopfamily.html