Im relatively new to the specs of cards and whats the best so im sure some of you will be nice 
Ive recently bought Fallout 4 and to my slight disappointment, my computer is slighty under spec for the recommended. When I say slightly, I mean everything is covered apart from the graphics card. The game runs on the lowest settings but the FPS can be horrendous.
Fallout 4 recommends an Nvidia GTX 780 3GB which is in the region of £250. However a friend has suggested Nvidia 960 4GB which is in the region of £75 cheaper. He said whatever I buy, make sure it ends in a '60'
What should I go for and will a 960 4GB be as good as a 780 3GB?
Regardless, I need to get some money saved.

Ive recently bought Fallout 4 and to my slight disappointment, my computer is slighty under spec for the recommended. When I say slightly, I mean everything is covered apart from the graphics card. The game runs on the lowest settings but the FPS can be horrendous.
Fallout 4 recommends an Nvidia GTX 780 3GB which is in the region of £250. However a friend has suggested Nvidia 960 4GB which is in the region of £75 cheaper. He said whatever I buy, make sure it ends in a '60'
What should I go for and will a 960 4GB be as good as a 780 3GB?
Regardless, I need to get some money saved.