Custom screen resolution on laptop screen?

I have a dell XPS laptop with the native screen resolution of 1440x900.
The nVidia properties show 1440x900 as the max resolution so do the monitor properties. The "list all modes" also has the mentioned resolution as the maximum. Is there a way to increase it beyond this ?
Update: i do not mind incompatibility or distorted view ..just wanna know if this is possible in any way
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