GPU upgrade in SG05

[Sidneylopsides]

I've got my main machine in an SG05 an am planning to upgrade the GPU for Fallout 4, among other things.
Currently I have an ASUS HD6850 1GB, which has done fine really as I'm mainly playing older games.
I'm aiming to spend under £200, preferably more like £150 so I'm tihnking the GTX 960 is the way to go.

Is there anything else that I should be looking at?

 

[Sidneylopsides]

I've been putting it off a while, and planning to spread the costs over a few months I pre ordered the Pip Boy edition so that'll be £100 in November.

Ideally I'd like to swap out this card for something cooler and quieter.