HowTo? appropriate setting for CS6 advanced GPU "30-bit display" setting on PC?

[l_d_allan]

I noticed that CS6-Extended (trial) has an Advanced GPU option for "30 Bit Display", and I'm unclear what the appropriate choice is ... Checked or Unchecked?

• Windows 7-64 and Asus Amd Radeon HD 6770 (2 or 3 year old mid-level) video card
• Dell Ultrasharp U2410 Adobe-98 monitor that quasi-supports 10-bit per channel color (just arrived)
• I don't recall CS4 or CS5 having 30-bit option for GPU. Is this new to CS6? Just for CS6-Extended, and not standard, non-extended CS6?
• Did this option for "30-bit display" show up because the Dell Ultrasharp monitor was detected?
• ...
• Can my Canon Pixma Pro-9000-2 make use of 30-bit color?
• Would I need to use the XPS-16 bit print driver to take advantage of "30 Bit Display"?
• Or is it not worth worrying about?

[Sheldon N]

I don't believe your video card is capable of 30 bit display, so it doesn't have any effect what setting you use.