Just took a quick look at some real world CF scaling numbers in GTAV, all normal settings were maxed out with advanced settings disabled. Frequencies as follows: 4.7ghz, 4.4ghz cache, 3200MHz C15, 1080/500MHz.
1080p 8xAA: CF off - 47.6, CF on - 144.7, 304%
1440p 4xAA: CF off - 49.1, CF on -...