onewingedenigma :
Glad to see you're still with me, Morgoth. It's a $75 price difference - so it's a bit more significant - but it seems the Extreme4 also has:
- DisplayPort (useful, as my work laptop also uses DisplayPort, i.e. one connector)
- 2 x PCI-e 2.0 slots
Not sure if this justifies the price difference, but I'm inclined to get the newer board as I'll upgrade my rig periodically over the next few years.
Hello - welcome. You have posted a very thorough and thoughtful thread request, that is rare. I have a few thoughts.
1. I own the AsRock Extreme 4 Gen 3 mobo and I can recommend it. I have had no problems with it. Whatever board that you get, I would make sure it is gen 3 - compatible with the new Ivy Bridge CPUs coming out soon and PCI-e 3.0 compliant
2. Though the GTX 570 is an excellent card, I think it is overpriced. The ATI 6950 is $100 less in many cases and it nearly equals it in performance. Still the 570 is an amazing card.
3. Go with 1866 RAM - you can get it for $65 on Newegg. There is a noticeable improvement in speed. 2 x 4GB is enough. CL8 or CL9 is sufficient. This is the sweet spot of performance vs price. You might also want to keep a look out for 2133 RAM on Newegg - I saw some 2133 Gskill 2 x 4GB RAM on sale for $75 the other day - a screaming deal
4. I own the HX 850 and it is an absolutely superb PSU - and this is from first-hand experience actually using the PSU. It is far better than your other choice for the following reasons:
a) It has a seven-year warranty backed by the legendary customer service of Corsair
b) Your build will max out at 400W - 500W load if you go SLI. In that capacity range, the HX 850 is close to 92% efficient, which is nearly platinum level. It actually is more efficient than the gold rated Corsair AX 850 up to about 75% capacity
c) It is modular and includes an amazing selection of connecting cables. This makes the unit a joy to build with
d) It will be silent and not heat up your case. I am not sure I have ever heard my HX 850 fan even come on. I have never heard the PSU once in my 2600K build. Many PSUs are noisy and hot.
e) It is by far one of the most stable PSUs in existence. The power over the various rails displays almost no ripple and variation
f) If you do overload it, this PSU can handle it. In one professional review it put out nearly 1100 W before it lost stability - this is amazing
5. I would suggest that you go with the Noctua NH-D14 for your CPU cooler. It is perhaps the highest rated, best reviewed air cooler in existence (I also own this). It is about $40 - $45 more than the CM cooler that you list but it will perform better.
The D-14 is about equal with the Corsair H80 and actually beats it in several reviews. It is quieter than the H100 and the H80. You listed silence as a requirement. You can run the D-14 at low fan and it will be silent and STILL deliver amazing cooling. I run mine at high fan and I cannot hear it over my case fans when the side cover is on.
Also the mounting hardware and the fans with the D-14 are superb. The fans are ball-bearing and are widely considered to be among the best of the best by nearly all professional reviewers. The mounting hardware is easy to use strong and pretty much idiot proof.
6. The Corsair 650D is a conservative design and is fairly quiet (not as quiet as the Fractal case that you list). It does have the same look that you are after. The 650D offers many advantages as it cools better, it has quick release side panels, it is USB 3.0 compliant, it is tooless (a joy to build in), it has a Sata III hot-swap bay, it has a built-in fan-controller and it is very high in quality.
I own this case and if you run the fans on low it is nearly silent and it is still very good at cooling. On high fan, if you remove the top HD cage (the HD cages are removable by loosening two thumb screws), the case becomes a top cooler, but you can hear the fans when they are set to high speed (the air makes noise because your are moving a lot of it)
7. You do not list an SSD - having just built my computer and used a Corsair Force 3 GT (emphasize the GT) SSD 120GB for the operating system I would strongly recommend you consider using an third generation SSD with your system.
The Mushkin Chronos Deluxe 120GB is that baddest, fastest SSD on the market right now but look at the Corsair GT, the Kingston Extreme Hyper X and the Patriot Wildfire also. The Kingston Hyper X is on sale at Newegg for $180.
8. Go with the Samsung Spinpoint F3 1 TB HDD. I own it and it is very fast. I got it for $50 on Newegg with free shipping. It regularly goes on sale for $50. This will save you some money
9. Amazon regularly has better prices for the 2600K CPU than Newegg. I got mine for $292 on Amazon
Good luck with your build