building a pc for this game

[PerrythePlatypus]

you're not gonna find much really if you plan on building it yourself for anything thats worth it less than $1,100 to $1,300

My calculations come to $1100 before tax, and thats without a after market cooler. so ya...spot on.
I'd advide another $30 for a Coolermaster 212+, or go all the way and get a Noctua D14.
Overclock that sucker.
Z87 mobo, I5, 7970( best bang for buck down to $300 these days), psu, case, Windows (oem)

The best budget CPU you can get currently would be a "Intel Core i7-4770K Haswell 3.5GHz LGA 1150" for roughly $340

The best budget GPU you can get currently would be a "GeForce GTX 660" for roughly $200

That puts you at roughly at $540/800 of your budget... You may want to think about upping that budget to around $900ish to comfortably get everything else required.

False on a few points. Don't get a I7 for gaming. That's just dumb.
Get a 4670k
And a 660 was NEVER best budget gpu. 7870/7870 Tahiti wipes the floor with the non ti and meets a 660 ti.
And you can get a 7870 ( tahiti core) for $200..why would you get a non ti 660 for $200.( discontinued btw)
AMD's offering are much better bang for buck ( as usual). You can get a 7970 for $300...or a gtx 770 for over $400.
Or a 7950 for $240 when a gtx760 is $280. Again, better bang for buck, and don't bother with the AMD driver hyperbole, drivers have been fine for quiet some time.

Seriously though... you shouldn't tell someone that wants to build a pc primarily for gaming to get a I7. hyper threading does squat for gaming. I'll leave it to you to Google benchmarks that confirm this.

I was recently in the same situation as you! I was buying a computer for this game and was completely lost.

I bought an x51 from Alienware (despite people's negative reviews around here on Alienware.) It's GREAT. It handles this game easily, 40-60 FPS even in the most congested areas.

For 999.99 I got an i7 4770k, GTI660, and 8 GB RAM. I was having a hard time finding a similar deal on stuff even custom built. I recommend you check it out. They have daily sales from time to time. The only downside is you have to wait awhile for it to get to you but I couldnt be happier with it.

It's not so much "Alienware" those that know better advise against so much as buying prebuilt /big box at all.
I could have built you better, for less. You over payed payed for a shiny logo, a generic or unknown brand of PSU, bloatware, and parts you could have switched out ( I7 for gaming is pointless, non ti 660 is meh)
But hey it's got a cool logo on it.

[reality_check]

It's not so much "Alienware" those that know better advise against so much as buying prebuilt /big box at all.
I could have built you better, for less. You over payed payed for a shiny logo, a generic or unknown brand of PSU, bloatware, and parts you could have switched out ( I7 for gaming is pointless, non ti 660 is meh)
But hey it's got a cool logo on it.

1. It's a bigger hassle to build your own computer for people who don't know how to build computers.

2. 999.99 isn't at all overpriced for the system I got. All about finding the sales with the prebuilts.

3. There's no custom building a rig with a chassis as compact as an X51. Not everyone has the room for a big hulking computer in their entertainment station.