Ok. Thanks for the info guys

Todays FPS on PS3 or Xbox360 use not even the 720p resolution. Games like Halo3 & Co. are calculated in a lower resolution and stretched to 720p or 1080p, because the PS360 are far to low powered for real HD-Resolution in FPS games.

fillrate was the best answer so far

Killzone 2 - for example - has native 720p rendering, so technically it is a real HD-resolution FPS. Unless you meant 1080p, in which case yes, the PS3 and 360 are probably not up to the job for your average shooter.

720p rendered games can be displayed at 1080p for most new-ish games by checking off the 720p display option in the display menu. Some of the older ones will actually kick the resolution down to 480p instead.

Nothing new, but it still works for games like Killzone 2. Kind of pointless, other than to say you're playing KZ2 at "1080p" resolution.

But really, 720p games are best viewed at their native render resolution, whether it be on an Xbox or a PS3 unless you prefer a softer image.

Personally, I'm not a fan of the Xbox approach to upscaling every game to 1080p due to the softer picture, but I leave it checked anyway for HD-DVD playback.

But a lot really depends on the size of the display and viewing distance because past a certain size/distance ratio, you're really just splitting hairs anyway.

If you really insist on playing at 1920x1080 native render or higher, you'll have to buy or build a decent PC instead. But based on the popularity of the 360 and PS3, it really doesn't seem to be a sticking point for most gamers.