I always have my 360 set to 720p, i dont see the point in having the GPU produce even more heat than it already does.
All games run at 60hz in HD so no reason not to select 50hz, it just allows older xbox games and streamed material that is 50hz to be displayed correctly.
No they don't.
Even on MS site , they tell you to change to 60hz for certain games that do not support PAL 50hz.
Which means if the game has both 50 & 60 modes, but even then 60 is better for fast games.
The image on your screen is black, distorted, or choppy while playing an Xbox 360 game
50/60 Hz Output Confusion
There has been some confusion in regards to 50/60 Hz output, due to the various dashboard updates which have changed the output settings, and also the separate issue of both gaming and video output (and throw in DVD output, which is again separate to video playback from the dashboard).
50 Hz output it optimal for playback of PAL video at 25 FPS.
First of all, the dashboard (including all non DVD playback through the dashboard, media center extender, USB, UPnP ...) will always default to 60 Hz if you are using any of the HDTV/component modes (including 576p). There is currently no way to force 50 Hz output mode in HDTV mode. The only way to make the dashboard video playback in 50 Hz mode is to use the SDTV mode, and this means resorting to 576i output - there is an option to set to PAL-50 or PAL-60 under "PAL Settings".
For gaming, the "PAL Settings" actually do affect the gaming refresh rate in HDTV gaming mode, even though the "PAL Settings" option only appear when SDTV is used. For example, you can force 50 Hz game output in HDTV mode by first switching to SDTV mode, set the "PAL Settings" option to PAL-50, save the setting and then switch back to HDTV mode. Note that some games do not support 50 Hz output mode, and you will get an error message when attempting to play these games at 50 Hz.
For DVD/HD DVD playback, things are somewhat different again. When you make changes to the HDTV output settings (eg. to change from 720p to 1080i), you will be asked if your screen supports 50 Hz output mode, if you select "Yes", the screen will refresh to 50 Hz temporarily and ask you again if you can see the screen. Regardless of whether you select "Yes" or "No" to this 50 Hz test, the screen will refresh back to 60 Hz after this test. If you did see the screen and you did select "Yes" to being able to use 50 Hz mode, then DVD and HD DVD playback will automatically switch to 50 Hz mode if the content being played is at 25 FPS. Otherwise, it will stay in 60 Hz mode. As mentioned before, this only affects DVD and HD DVD playback, not the playback of any other video files through the dashboard interface.
Not all games are native 720p
No, there are what, 6 games that are native 1080p?Not all games are native 720p
Well the 360 runs hot anyway, any hotter would be George Foreman grill territory.and I've never seen anything to say the 360 runs hotter when scaling as it has a hardware scaler - eg the GPU isnt doing it