Photoshop CS6 makes extensive use of graphic card features such as OpenGL and OpenCL. Prices of graphic cards that have those features range from well under $100 to over $4000 for top of the line Pro cards.
If your system is only used for PS then there's no need to invest in features you don't need, such as those needed by video gamers. But you do want the best graphics card performance that PS can make use of.
Has anyone seen a test of various graphics cards to determine at what point additional graphics performance no longer improves PS performance? For example, does the card's clock speed effect PS performance? Does 2G of graphics card RAM offer any improvement over 1G (or 512MB)?
Thanks
R