Finalizing build, have a fairly good idea, just wanting an outside opinion.

Personally I would drop down to a 3570k, overclock the bejeebus out of it and get 2x670's instead of sinking money in to the CPU. I suppose it depends on the other uses, but take a look at the gaming benchmarks here:

http://www.anandtech.com/bench/Product/552?vs=701

Notice the 3570k keeping up pretty well... a little slower, but not scaling with cost.

Then take a look at the 680 vs 680 sli (670 should be about the same, they didn't have 670 sli on the list.

http://www.anandtech.com/bench/Product/555?vs=585

Notice how in most games at high resolutions you essentially double the frame rate.

I just think it's a better allocation of funds in a gaming machine.

It'll run stuff absolutely fine, but there's definitely a few curious choices.

Sandy Bridge E is all well and good but as a platform it doesn't really offer any major advantages in gaming and costs a fortune. Conventional wisdom dictates the 3570K and 3770K are far better value depending on your requirements.

1050W PSU is good for 3 of those graphics cards, and in general I find the HX range to be a little overpriced for the quality.

H100i is a really good cooler but it's really noisey and expensive.

1 stick of ram means no dual channel, plus your selected motherboard supports quad channel ram. The gains are not dramatic, (barely significant really) but it's one of the features of the X79 platform.

4Gb graphics card is fairly pointless from a gaming perspective, especially if you plan on stacking them up later.

Downgrade the CPU to a 3770K and pick up a GTX 680 with the savings. 2 4GB sticks of ram for dual channel.

Unless you only plan on have couple games installed at once I would get either a larger SSD or add on a storage HDD. Is your external drive connected via SATA? After I installed my 120GB SSD with Windows 7 and all my other programs I only had about 50GB of extra storage space available. Enough for 2-3 games max. I like being able to have all of my games available whenever I want them.

You have some odd choices there.
First off, check out this article: http://www.tomshardware.com/reviews/ssd-recommendation-benchmark,3269-6.html
Your Intel 520 SSD ranks about 25% of the way down the Hierarchy list, but it and the Samsung 840 cost roughly the same.

The i7 series is designed for serious multitasking, its good for say, rendering 3d videos, but its a bit much for gaming, The i5 3750k is one of the most popular CPU's on the planet amongst enthusiasts at the moment, plus it's slightly faster at factor clock speeds (3.4ghz).

I looked at the H100 CPU cooler for my own build, and determined that the Noctua NH-D14 provided BETTER cooling, plus removed the risks of (a) liquid in your computer (b) a pump that can (and has a history of) failing, and (c) it just moves the heat a little farther away from the cpu before radiating it. I'll give the H100 this over the Noctua though: it DRAMATICALLY reduces clutter in the case, the Noctua is a beast, it sits overtop of ram slots and leaves very, very little room to reach around the edges to install screws and connectors.
Tomshardware article comparing liquid coolers to the NH-D14: http://www.tomshardware.com/reviews/h100i-elc240-seidon-240m-lq320,3380-13.html

Your power supply could run a village in Africa for a month. Thats way, way overkill for one GPU. Granted, if you plan to expand, it may be nice, but how much do you really plan to expand your computer? P.S. make sure its modular, I will never again buy a power supply that isn't.

Your motherboard has 8 ram slots, and you only plan to use one? If you go and get 2 gb sticks you just doubled your memory with almost no extra cost (and it appears from this list that cost is no issue) and if you go to 4 gb sticks then you quadrupled it, again at very little additional cost. And unless you have some kinda fetish for Corsair, I would look at Ripjaws or Crucial brand memory.

And about your hard drive situation: You say it doesn't need to be fast, but thats where most of your games/ programs are. By the time I installed windows 7, Spybot S&D (antivirus) and Microsoft security essentials, over half of my 128gb SSD had been used up, and some games are maaaasive, most high end games available on steam take around 10gb for their install alone, not counting save information. Hard drives are cheap, a 2tb Barracuda (7200 rpm, not the fastest hard drive ever made, but it gets the job done in a reasonable amount of time) is running about 100 bucks on amazon right now. Plus factor in the connection, SATA is much faster than USB (the reason most external HDD's use USB is that it provides power, SATA does not) bumping it up to a 10k rpm HDD will roughly double the cost, and a 15k is 6-8 times the cost.

Thats my two cents, just seems like you are putting a lot of money into this but its not balanced very well.

Planning for future upgrades is always tricky because the value window is constantly shifting. As a generalisation I'd always say to build the best system you can today with your budget rather than plan to add things at say 6months or a year (there are massive exceptions to this of course).

CPU requirements haven't moved a whole lot in the last few years, if you bought well 3 years ago then you can probably still run more or less everything, it's mainly graphics that have pushed forwards. Support for multi core CPUs is definitely increasing and we can speculate what effect the new consoles might have on this too, but imo it's unlikely that anything more than quad core is going to be utilised in the foreseeable future (required, at least).

My main issue with the PSU is that without a "plan", it's pointless. A PSU only draws what it needs, but when you are so far over on your requirements, you work out width the operating window covered by the 80Plus standard and the 80Plus Gold sticker on your PSU is worthless. If you are planning on going to 3way SLI it suggests you have also changed your monitor setup, as there isn't much that warrants 3way SLI with GTX670s.

I'm not knocking you, everything will work fine, but I think you can get a lot more quality and a lot more value by rethinking your needs. Also just reread this and I sound really negative. I like the case. Fixed.

But where are you going to go later? There are really only a couple of LGA2011 consumer level choices, and with unlocked multipliers there isn't much point in spending a grand to go to a 3970X. You're even pretty stuck on the 1155 platform too since Haswell is around the corner and gets a new socket, so it's not like a huge number of new 1155 processors will be coming out. If you plan to keep your machine for two-three years or so there probably won't be a viable upgrade path anyway.



Any good quality 750 is fine if you plan 2 top end video cards, but yours is fine if you plan in going 3xSLI in the future. The returns of performance over cost in 3xSLI is generally not great though (depending on your setup and stuff you are doing)



RAM is super cheap, but halving (or quartering) your RAM performance now for a possible upgrade in the future seems a little silly. Why not buy a 4x4GB set now (if you go with the 2011) or 2x4GB (for 1155), since in both cases you have room to grow and get your performance now.

I still think the 3930K is not a good gaming value over a 3770k or even 3570k.

That's much more in the ballpark of a senisble gaming machine. If you plan on video encoding or other CPU heavy tasks you can swap i5 for i7, but for solely gaming there isn't much diff.

Extreme 9 is good but expensive, if you need the features, otherwise the Extreme 4 or 6 offer better general value.

Ram is 1.65V, I'd probably just stick with 1.5V 1600Mhz or 1866Mhz.

I'd probably change the PSU too, there's nothing wrong with it but at that price level it's likely you can get something Gold rated (or better). Think XFX Core/Black, Rosewill Capstone/Fortress, Seasonic X/SSR series.

Definitely on the right track though.