Well .. Using these 3 links (*,**,***) I resolved to play some games in 480P and using some filters (software filter: TRILINEAR hardware filter: ADVANCE MAME 2X, 10x11 Aspect Ratio) on some emulators (madmab in this case) ... Indeed, my worry with the 720 or 1080, it's what I observed the following phenomenon : -The scollings were gorgeous, but too many sprites pixelating (especially the avatar) (if anyone knows precisely what it's called ...) I have not made any tuning on CoinOps yet, but it will not be long ... However, if someone could introduce us to different concepts of HD (filter, resulution ...) on emulators, especially on CoinOp it would be very nice ... (*) http://forums.xbox-scene.com/index.php?showtopic=679899 (**) http://fancyxbox.info/?doc=1&secao=coinops (***) http://gueux-forum.net/index.php?showtopic=241473 P.S. : Thank you to the authors of those topics