One physical i7-980x CPU versus two

[radikulram]

Budget aside (I've got £6000/$9200 to spend) I want to build a new computer.

I hope to become a games developer (not designer) but I hope to make my own game while working for a company (I'll be doing everything for my own game, most likely make it with Java/C).

So I would like to know the benefit of having two CPU's over one.
Please don't neglect the benefits and only list disadvantages so I don't actually build a 2CPU system, chances are I wont do this but I just want to know the advantages out of curiosity.

I will be using photoshop/GIMP, but not at a military level ofcourse.

Specifically I would like to know the advantage of two 980X over one, I know one disadvantage is that some programs don't work if you have more than 16threads in your system.

Also will a 2 socket motherboard work with only one CPU installed? (So I can add another at a later date perhaps).

I'm not too sure on how to word this so ask me if you didn't understand something.

 

[amuffin]

You are looking at the newer sandybridge 6 cores.

i7-3930k/3960X, if you look up benchmarks they are MUCH faster than the 980X.

 

[radikulram]

You are looking at the newer sandybridge 6 cores.

i7-3930k/3960X, if you look up benchmarks they are MUCH faster than the 980X.

Any good dual 2011 socket motherboards out atm? The SR3 is said to support 2011, but no idea when that comes out and if it'll only support xeons.

 

[amuffin]

SR-X, it only supports Xeons