Bridge CC vs. CS6: software-rendering

Hi,

question about software vs. GPU accerlated rendering in Bridge CC vs. CS6 (Win10/64).

Graphics Card: NVidia Quadro K2200 with 4096 MB GDDR5

Bridge CC:

→ Does this greyed out option mean Bridge CC can't use GPU acceleration?

... vs. Bridge CS6 (same PC, Win10/64):

→ however CS6 uses GPU rendering?

Thanks!

Carlos