QUOTE(Bomb Bloke @ May 11 2010, 08:10 AM)

You probably won't notice any difference unless you're intending to set the system to use a higher display resolution (which requires setting the console to NTSC, assuming it's not set that way already). You're locked in standard definition with your current cables, but it may be your TV doesn't support HD display modes regardless.
Alright I got them. Seems like it made a bit of difference.
I do have a HDTV. but I haven't checked on how I can optimized HD settings in XBMC.