Native resolution

[truestblue]

Hi Guys
I just got a new LG W2253TQ-PF

http://www.lge.com/us/computer-products/monitors/LG-lcd-monitor-W2253TQ-PF.jsp


And I have a N-vidia GTX 260 connected to this LCD via a DVI-D Cable
Now when i try and change my resolution in the N-vidia control panel
From PC 1920 x 1080 (Native) to HD 1080i, 1920 x 1080
The monitor goes Out of Range

I really don't understand this
Can someone please explain me what native res is ?
And why does it go out of range ?
And does this mean I'm not getting Full HD ?
Thanks

 

[aford10]

Make sure the refresh rate is at 60hz.

 

[truestblue]

When i try to set the resolution to HD 1080i , 1920 x 1080
there only 30Hz and 29Hz
But in PC 1920 x 1080 (native)
There's 60Hz and 59Hz

 

[aford10]

Does either 30Hz or 29Hz help?

 

[cjl]

Why would you want to change your resolution to 1080i? It's lower quality than 1080p.

 

[truestblue]

hmmmmm
okay when i open the Nvidia Control Panel
I have 2 options
HD,SD & PC
IN HD there is

1080i, 1920 x 1080
720p , 1280 x 720
480p, 720 x 480

And in PC
There is 1920 x 1080 (native)
1768 x 992
etc

I'm currently using native res
But I thought that the HD Resoultion would give better results than the native resoultion ?

 

[TheDuke]

if the native is 1920x1080 it is HD and that will give you the best results

 

[cjl]

1080i is lower quality than 1080p, which is your monitor's native resolution (1920x1080). If you leave it on native, it should give the best possible quality.