Detail specs of Surface pro 4

I'm an architecture student and as  a sub computer I'm considering buying a Surface Pro 4 (Core i7,256gssd, 16g ram, $1699)

even it will be a sub computer, i need it to run auto-cad, rendering programs, Photoshop and etc perfectly.

One of my colleague has said it runs most of the programs we need with no difficulty. and since it's super light,

I am kinda really into buying that one. but before I jump into conclusion, there are several things to make sure.

I hope I could get clear answers for these.

1. There are no specific detail specs for surface pro 4.

on this website, I only find that its CPU is i7 with 256g SSD and 16g ram.

I want to know what generation of i7 is being used, how's the clock speed, what graphic card is being used and etc.

I assume those will be quite good enough to run the programs that i need but as a buyer, and as a person who is trying to compare many different kinds of laptop including surface, i really need to know these information. with same amount of money, why not buy the ones with better specs? checked on several other web pages for laptops and i can't simply give some comparison!

Personally I give more priority on specs than lightness.

I want my laptop to be light but it should pass my expectation. yes, performance is number 1 thing to consider for me.

2. Monitor compatibility

I was told that I can connect my monitor to surface. But I'm concerned about the resolution it can support and if there is any specific monitor that fits/runs perfectly with the surface.

3. Weight

As mentioned earlier, I am thinking of buying Su rface Pro 4 (Core i7,256gssd, 16g ram, $1699).<<

How much does it weigh?

4. Windows/ MS Office installed?

Are windows/ ms office already installed? is additional purchase needed? ****

Thanks for reading my post and for the reply! 

***Subject edited for clarity by the moderator.***