[Vule.]

I'm buying new PC in december
So i need some help..
I'm probably gonna buy this one
http://pcpractic.rs/proizvodi/deskto...bgt6501tbdvdrw
or this one
http://pcpractic.rs/proizvodi/deskto...83208gb78701tb
So i'm asking which one is better and can they both run BF3/SR3 on highest settings at 70 fps?
+I'll be doing a lot of programming
Thanks!
PS. They both cost around 600-700 euros
PS.2 I'm also scared about 1 thing,will i pay much more for electricity
I will be using it almost 24/7
+i may overclock it..