some (dumb) pc building questions.

its not so hard to build a pc yourself..but better buy one if youve never done it before.

First of all you should really clarify how much you are willing to spend, because you could build a PC that runs 90% of the games at full capacity at 1920x1080, or you could have a monster PC that can support three monitors, has two video cards, etc. that costs a heap more.

I have a respectable but by no means amazing Phenom X4 965 Black Edition, 8Gb RAM DDR3 1333GHz, 120Gb SSD, and a Radeon HD 6870, and I can run pretty much anything at max (haven't tried Crysis 3 but doubt it can handle it).

And then you could have an i7, 16Gb RAM 2000GHz, an nvidia Titan and a 512Gb SSD or even more, and the cost would be astronomically larger.

If you have old parts lying around you should definitely practice before buying your new computer. Just try taking them apart and putting together something that works :D Some components don't like each other ;)

I would recommend taking a look at amazon for your purchases... I'm from Portugal and I found unbeatable prices there... For choosing a good CPU/GPU these websites might be useful:

1) Videocard Benchmark;

2) CPU Benchmark.

Hope it helps! =)

What games do you want to play and at what resolution?

A white PC? What is this, the 90s?

Edit: Not really intended as an insult, and I didn't bother looking up the 'nzxt lexa s'. I just haven't seen a white computer that wasn't a mac lately.

I have no idea what your budget is.. but this is what I suggest..

Give you room to overclock and sli it later whenever you wish.
The SSD is for your bootstart and your main programs.
Pretty sure you can get a lower wattage on the PSU, but you shouldn't cheap out on it.

I think you should spend a little more money (60-70 USD) on a liquid cooler since it is more quite and it cools off better than most of the fan cooler. <--- (this is all up to you)

Buy a quad channel RAM. And I'd suggest getting an Nvidia GPU, because it supports physix! Also, buy the unlocked CPU, you'll be able to overclock it a lot.

Get a case with dust filters. I've had my current build for two years now and the parts inside barley have any dust on them.
Go for the K version i5, you will want to overclock it eventually.
Nvidia have better driver support for new games.

Ditch the Seagate.

Go for a 550w PSU.
Something I learned from a tech guru from the forums.
1 GPU = 550w
2 GPUs = 650w
3 GPUs = 850w.

So 750w isn't really needed. But rather than that it's a good build.

Consider a COOLER MASTER Storm Stryker case. Similar price, and I think more useful features than the Corsair Graphite 600T.

Also consider getting the Z77 you picked out. It's a full ATX board. With the 75M, a micro-ATX, the 7950 might rest against a neighboring card. The Z77 you picked out has enough space between the first and second full PCI-E slots that you could mount a HUGE aftermarket heat sink and fan on your 7950, which I suggest you do to prolong the life of the card and allow overclocking when you finally run across a game you can't run on ultra at 60fps, which someday will happen.

The K-series is identical to the regular CPUs if you're not into overclocking. Also note that the i5-2500 series is nearly identical in performance, so if you find a large discount somewhere, look into it.

Not all cards are alike. The XFX model is not tested here, but this should give you an idea of how different each brand can be.

link

Overall your selections don't look bad. My personal preferences:

• "Future-proofing" is an outdated concept. Buying a case that has 1 extra hard drive bay "just in case" isn't a big deal, but buying a $300 motherboard that supports 3x video cards so "some day you can try SLI/Crossfire" is. Focus on what'll work and what are solid components. If you feel like upgrading in the future you can always sell your current rig (minus hard drives, which you'd likely retain) and retain some value from that purchase that you can carry over to your next build.
• Buy a cheaper case. One of the cases you have listed is at over $120 USD, which is asinine for a computer case. It's gonna' sit on the floor or next to your tower--either way it's cosmetic, buy a case that has the minimum level of features you want (i.e. a window, 90-degree rotated motherboard mounting, top PSU, # of 5.25" bays, max # of hard drive mountings, etc.) and purchase it.
• I'd recommend an NVIDIA video card. I used to be an ATI fan until NVIDIA started excelling at driver support. While NVIDIA has some issues, typically those issues are present in the current drivers for newly-released products. Any product you'd be able to afford won't be a top-end, brand-new card, so I'd expect you to have relatively few issues regardless of which card you ultimately purchase.
• Consider having an SSD for your main partition. Even if you can only afford a 64GB SSD to get Windows and a few key apps installed it'll make a world of difference in your purchase. If you save enough money cutting down your case purchase to $40-$50 USD you can re-appropriate that budgeted amount towards an SSD.
• Don't go for the 750W PSU. Totally not worth it. My recommendation is this SeaSonic S12II 520W PSU: http://www.newegg.com/Product/Product.aspx?Item=N82E16817151094 -- but you can pick any PSU that'll have at least ~32A on the +12V rail (based on a few recommendations by video card reviewers, 32A seems to be roughly the "high end" of the draw.)

It's a good build, just add an ssd. The 550W PSU is enough, you don't need the 750W one. You might not need the dvd writter at all, just saying. Ask yourself if you're still using this kind of media. And the i5-3570 vs i5-3570K, well, are you gonna overclock it? If so, go with the 3570K with an after-market cooler. If not, take the non-K one. They're absolutelly the same, the K one is just unlocked for overclocking.

ASRock FM2A85X Extreme6 with AMD A10-5800K Trinity on the inexpensive side.
ASRock 990FX Extreme3 with AMD FX-8150 Zambezi for only a few bucks more.
For afforadable video 1 (or2) ECS Black Series NBGTX560-1GPI-F GeForce GTX 560 ,
or if you can afford it 1 (or 2) GIGABYTE GV-N66TWF2-2GD GeForce GTX 660 Ti