http://en.wikipedia.org/wiki/Screen_Resolution

i had an 8800gtx at the time Crysis was out and there is no way you ran that at 25fps with 2AA on very high at 1920, here's a review,

http://www.overclockersclub.com/reviews/xfx_9600_gt/6.htm,

At the end of the day if you get a bigger monitor it will impact your FPS, and the games your quoting are years old, what about Metro 2033 or Battlefield 3, if your happy turning things down in a game and dont want the best possible eye candy then fine, but it's still true, the better the card the better the performance,

You dont have to buy expensive cards but if you do, you dont have to worry if it will run well and look good

Mind = Blown

That would be true on the consoles. For example, most 360 games are rendered in 1280x720 (720p), but it's possible to have them upscaled (stretched) to 1920x1080 (1080p) and have it displayed as 1080p on the TV. It won't be true 1080p though, cause the game is still rendered in 720p. It's still a 720p game.

On PC however, if you change the resolution you change the resolution it render the game at, which very much improve the graphics. So if you run a PC game in 1080p, then it's true 1080p, and not 720p upscaled to 1080p like on the 360.

A higher resolution is always a better thing, and there is a fairly noticeable difference between 1280x720 and 1920x1080.That said, there are plenty of other ways to improve the graphics, like better textures with more details, more advanced shaders and so on. So it's not like the resolution is the holy grail of graphics. I prefer to run at a lower resolution before turning down the details if things gets choppy.

How do you turn down the resolution and not have the game be stretched in strange ways? I can't stand it when it does that, and most games don't seem to have a windowed mode.

I use a resolution with the same aspect ratio as the monitor. Like 1280x720 for a 16:9 monitor and not 1280x1024 which is a 5:4 resolution. This obviously mean that the monitor do some upscaling, but I never experienced any monitor with bad upscaling unless they deal with very small resolutions like 320x200.

I have a GTX560 Ti which is not super high end, and I run Skyrim maxed out at 1920x1080 with the HD texture pack. Top of the line GPUs aren't necessary for most games.

You can run 3D rendered games at any resolution you want without any weird stretching. Unless you mean stretching by the monitor, but that's because LCD monitors look blurry/low quality when not run in their native resolution.

I've never seen a monitor displaying a non-native resolution that doesn't have at least some stretching. Or maybe I'm just really picky. I can't stand the sight of ovals everywhere.

But then again, I'm not using a monitor, I'm using a TV.

Yes, that is what I mean. My TV does not like running at its non-native resolution.

sorry wrong post

I never said they were neccessary, i said they were better at running games at higher resolutions, which they are, and ive got a gtx 480, which i got for GTA 4 2 years ago, and to run on full it requires over 1gb, your card wouldnt be able to do that, so there are reasons to buy the better cards

If you want your PC to run the same as a 360 set the res to 1280x720. That's all it is. Screen size is irrelevant, resolution is everything in this case.

This is totally untrue and neither possible.

It's easily possible. And I wouldn't be surprised if it were true. The UI is set up for a controller, and it shows.

As has been said, the larger monitor you got most likely has a significantly higher native resolution than your old one. The settings are most likely defaulting to this higher resolution, and rendering at a higher resolutions requires more from your hardware. You should be able to set the game to run at a lower resolution on your new monitor and get rid of your performance issue. Just make sure the resolution you choose is for the correct aspect ratio. If your old monitor was a 4:3 aspect ratio monitor (not widescreen) and the resolution was 1280x1024 (for example) then you could try 1600×900 or 1280x720 on a 16:9 widescreen monitor or go down to 1024x576 if you still have performance issues.

The Xbox is rendering at the same resolution on either TV (so the performance will be the same), and if the old TV was a standard definition television then the new one likely looks better because it is an HD set and is capable of better visual clarity.

There are some significant technical differences between LCD monitors and LCD TVs (like pixel clarity, resolution/refresh support, post-processing, etc.), but I don't think they're relevant to the issue you're seeing.

I think you should have said "for" instead of "on" the xbox.