I have a 15" rMBP that I use with a Dell U2412M when I'm at my desk.
If I have the Dell set up as my main display and play D3 with the rMBP open (not closed in clamshell) is any video performance lost as opposed to playing D3 on the Dell with the rMBP in clamshell?
If I have the Dell set up as my main display and play D3 with the rMBP open (not closed in clamshell) is any video performance lost as opposed to playing D3 on the Dell with the rMBP in clamshell?