Good job on dropping the 270 for a 7950, 4.2 is about right since that's 8350 speeds by default and they are pretty much the same CPU, you can go higher with proper cooling though if your mobo can handle the stress, 4.8 shouldn't be a problem with decent cooling but power draw will shoot up a lot higher. Get yourself some SSDs to RAID-0 next year if you have the money, that's always a major performance bottleneck.

PS: that default CPU fan is annoyingly fucking loud isn't it? haha, I know too well.

Well, it's always better to use them with cool air, but that doesn't mean that using the PSU as an exhaust will damage it. All the old PC cases that had the PSU mount on topused them that way, and now power supplies are better than before.

To put it in perspective, all the closed liquid coolers like the H100 he wants to buy, recommend using them with cool air. But that means that all the hot air goes into the case messing with all the components. That's why most users put them on the roof (or the back) as an exhaust.

Nope, the air intake from modern PSU is from the outside case fan and the intake from the PSU is nowhere near hot and usually only a little higher than your body temperture which is a hell of a lot lower than anything else in the case, which means it's pushing cooler air straight into the GPU on his setup which is a lot more optimal than the GPU fans along. Basically, that PSU has 2 fans, one fan sucking air in from outside the case, and one pushing air upwards inside the case.

I think i would save a little on RAM and PSU and get if you can a 7950 (its a little faster than 270x at stock and it OC prettry well. 1100/1550 mhz almost guaranted) for just a litlle extra you can get real close to hd 7970 numbers with an extra 1 gb of gddr5. I would choose an i5 for CPU if you like starcraft the cheapest one you can find. Or put a K variant an OC with an aftermarket cooling but its way more expesive. Go fx 6300 route an save a little money or go i5 its my advice (dont know if fx 6300 issues on BF4 have been solved, only game where 8320 its faster than 6300 by a decent amount i think)

Get a 1080p monitor or better for an improved experience.

This is the one  I have , everything is top notch except my GPU which is an overclocked GTX 560TI old, but runs everything on ultra, except games like Metro  , I am not interested in buying a GTX Titan just yet, not have enough money for that at the moment. 

Mobo = Z87 Deluxe 

CPU = Haswell i7 (forgot the exact model) , I remembered it is the 4770K, from my specs video on youtube.

GPU = 560 Ti overclocked (out of the box)

Watercooled, but It doesn't actually require it at all, since everything runs well without it. 

Case = Level 10 GT black edition.

Hard drive = 1 TB HDD (old) , and a 2 TB HDD 7500 RPM (or something) 

I don't have this with me at the moment as I am not at my home town so I forgot what models are the HDD and the CPU.

Yea, the PSU is overkill, but I did the exact same thing. I wanted an 850W so I can upgrade things in the future (perhaps dual GPUs) without having to worry about it. It was like 10 bucks more...better than having to pay 60-80 bucks down the road to re-upgrade the PSU.

@PullusPardus: Get a 780Ti if you only plan to use it mainly for gaming. better performance for less money.

thats the thing, I don't use it mainly for gaming, I use other things more frequently lately, so i am holding off at the moment.

I'd look at some benchmarks out there, the 780Ti is faster than a Titan in some tasks too

http://www.anandtech.com/show/7492/the-geforce-gtx-780-ti-review/14

Yeah it is, I was just talking about the titan as a vague term for the latest geforce cards, by the time I would buy a card there would probably be one that is better than the 780 ti.