
Originally Posted by
Dave Baumann
Memory clock switching does not occur in mutli-monitor scenarios for the with hardware PowerPlay systems for the reason OpenGL guy commented on (which, as he pointed out, I've also commented on previously). With R700, the flash in multimon mode wasn't so much of an issue because it basically only does it when you boot a game, and in many instances it may also be changing resolution as it loads up, so that wasn't deemed an issue; with hardware PowerPlay, because we can get much lower lows and because it is hardware activity based PowerPlay states will move around frequently - both at the desktop and even in games - and so in multi-panel mode we have restricted the memory clock switching so that the screen flashing as it moves states on some of them do not occur.
Even though, in multi-mon modes, we have to restrict the engine clock a little more than we can in single panel modes, we still achieve better power savings than we could with 2D/3D switching.
Bookmarks