Final Build Before Purchase

since your not running SLI atm, I would downgrade the PSU and the case to something like the haf 922 or 912 and get a better monitor - it's kinda worthless to get a $400 video card and cheap out on the monitor since the monitor can't support it anyways.

your HDD link shows your PSU btw.

No the i7 3770K isn't worth it.

Check out my $1100 build here:
http://www.squidoo.com/electronicandmore
It'll save you some cash but still give you similar performance.

Your motherboard is overkill and not even close to necessary.

To answer your question, the 3770K is not worth the extra $100 or so for the gamer.
Few games use more than 2 or 3 cores, so the extra hyperthreads are largely unused.
You would do better to spend that extra $100 elsewhere.

Perhaps on a GTX680, or, better yet on a SSD for the os and some games.

Think carefully now about any thoughts of planning on sli.
I like the EVGA FTW GTX670. Good pick there.
It will run any game well on a single monitor.

Without sli in the plans, you can use a cheaper Z77 motherboard. Most any will do.
You would only need a 650w psu, even for a GTX690.
Your case cooling needs would be more modest.

In a year or two, we shoould see cards bettering even the GTX690. At upgrade time, just sell the GTX670 and replace it with the next best thing.

Cases are a personal thing. Buy a case that you lust after.
If you love the haf 932, buy it.
To my mind, it is huge, much more than is needed to hold your parts.
And more expensive.

Hey dude
Drop that super expensive motherboard for a Gigabyte UD-5H Z77
Keep the power supply incase you want to get a second GTX 670
Stick with the i5 3750k
You could do a Corsair 500R case with a H100 cooler should be able to hit 4.6-4.7Ghz pretty easy. If not than your current case and cooler will be fine, if your not overclocking.

Thanks for all the great feedback!

I will keep everything and downgrade the case and get a better computer monitor

All the gtx 680's are out of stock  

Anyone have good ideas on a monitor?

What's wrong with my monitor?

well if the size doesn't bother you and the cap of 60fps doesn't bother you nothing in particular... monitors are a very opinion based thing anyways.
I just think you should go for something bigger and/or with more hz.