Dell Precision M4800 help

Greetings Gurus,

1. How much more will the 9 cell battery weigh than the 6 cell battery: or more importantly, how much will the 6.35 lbs total weight go up to?

2. How many hours (#.#) approximately will the 9 cell battery go, or in a range if that is easier?

3. So the NVidia K2100 2gb video card is as good as it gets? Will it carry 3 monitors easily for futures (or stock) trading? There is no 3d, but just 2d charts getting bombarded with up to thousands of tic data per second.

4. Generally, how is the:
noise, temperatures, and maintenance of the M4800?

This is such a good system compared to the heat, noise, and maintenance of ws towers with ups's: or that's the plan anyway until told otherwise.

 

Never mind, I saw the M4800 owner's thread and it answered most of my questions on the first thread. Please forgive me!