Air 540 Build

OK folks, I'd appreciate any input (and sorry for the wall of text).  This will be for 4K gaming.  I'm currently at 2560 x 1600 but will upgrade to a 4K monitor once I can find a good one that's about 30 - 32".  I'm also a bit torn.  Should I wait for AMD's 390X or just go Titan.  I definitely need a new rig and June seems a bit away but I'm having problems in my head justifying spending $400 - $600 more on potentially something that may not be as good.  I know, I know if you wait for the next best thing you'll never get anything but the cost reduction and the better tech just around the corner definitely has me balking at buying right now. 

Some other questions I have:
1). I'll go 3 120mm fans in the front.  Should they be SP or AF?  From all I've read SP versions are better but don't understand why unless the concern is the front filter.  In addition, does anyone have any idea if that means I would need to get the FAN Upgrade option?  Also, is there an additional charge for different fans than those offered as I guess that could be seen as a special order.

2). Do people think that a filter for the bottom of this case is necessary?  There is a place online that now sells them (not Corsair however). 

http://www.demcifilter.com/p0431/Corsair-Air-540-Dust-Filter-Kit.aspx

I was also wondering if they could modify the case to put a fan on the bottom (not sure that can be done due to the hot swap bays I think).

3). Was thinking of x3 SLI.  However, with the Titan, it seems like heat could be a problem and spacing on the mother board.  This was brought to my attention in a different thread by  which I appreciate.  On further research, I think AnandTech during their review indicated that the VRAM side of the board can get ridiculously hot.  Thus I'm thinking x2 should be good enough (provided I don't wait for the 390X).  I'm assuming DS could also change the fan profile to start cooling at lower than 80 degrees which is the default on the Titan now.

4). Overclocking.  For the CPU - stage 1 or stage 2?  For the Titans?

OK enough of the questions, this is what I was going to go with:

Configuration Code:	1165004
Configuration URL:	https://www.digitalstormonline.com/configurator.asp?id=1165004

Specifications:

Chassis Model: Special Deal Hot Seller - Corsair Carbide Series Air 540
Exterior Finish: - Standard Factory Finish
Trim Accents: - Standard Factory Finish
Processor: Intel Core i7 Extreme Edition 5960X 3.0GHz (Eight-Core) (Extreme Performance)
Motherboard: ASUS X99 RAMPAGE V (Intel X99 Chipset)
System Memory: 16GB DDR4 2666MHz Corsair Vengeance LPX (High-Performance)
Power Supply: 1200W Corsair AX1200i (Digitally Controlled Power)
Expansion Bay: - No Thanks
Optical Drive: ASUS Blu-Ray Player/DVD Writer (Play Blu-Ray and Burn DVDs) (Model: BC-12B1ST)
Storage Set 1: 1x SSD (512GB Samsung 850 PRO)
Storage Set 2: 1x Storage (2TB Western Digital - Black Edition)
Storage Set 3: - No Thanks
RAID Config: - No Thanks
RAID Card: - No Thanks
Internet Access: High Speed Network Port (Supports High-Speed Cable / DSL / Network Connections)
Graphics Card(s): 2x SLI Dual (NVIDIA GeForce GTX TITAN X 12GB (Includes PhysX)
Sound Card: Integrated Motherboard Audio
HPC Processor: - No Thanks
Extreme Cooling: H20: Stage 2: Corsair H110i GT - 280mm Radiator Liquid CPU Cooler (Extreme Performance)
H20 Tube Color:- Not Applicable, I do not have a FrostChill or Sub-Zero LCS Cooling System Selected
Chassis Fans: Standard Factory Chassis Fans
Internal Lighting: Remote Controlled LED Lighting System (Multiple color options and lighting effects)
Airflow Control: - No Thanks
Chassis Mods: - No Thanks
Noise Reduction: - No Thanks
LaserMark: - No Thanks
Boost Processor: Stage 1: Overclock CPU 4.0GHz to 4.4GHz
Boost Graphics Card(s): - No Thanks, Please do not overclock my video card(s)
Boost Memory: - No Thanks, Please do not overclock my memory
Boost OS: - No Thanks, Please do not tweak the services on the operating system
Windows OS: Microsoft Windows 8.1 Professional (64-Bit Edition)
Recovery Tools: Windows Recovery Toolkit (Bundled with Windows CD)
Virus Protection: FREE: McAfee AntiVirus Plus (1 Year Service Activation Card) (Not Pre-installed) ($35 Value)
Office: - No Thanks
Game: - No Thanks
Display: - No Thanks
Surge Shield: - No Thanks
Speakers: - No Thanks
Keyboard: - No Thanks
Mouse: - No Thanks
Portable Gaming: - No Thanks
Branded Gear: - No Thanks
Priority Build: - No Thanks, Ship Within 10-15 Business Days After Order Is Successfully Processed
Warranty: Life-time Expert Care with 3 Year Limited Warranty (3 Year Labor & 1 Year Part Replacement)

Edited by Dax Doomslayer - 19 Mar 2015 at 8:37am

The other option to get the third GPU with an extra slot spacing is to special order one of the EVGA motherboards.

Could you point to the reference for the fan profile of the Titan X? I had heard that NVIDIA was looking to potentially turn off the fan at low temperatures, but I haven't yet seen it confirmed. Also, I am thinking the fan comes on a much lower temperatures...80 degrees C is where the card starts to throttle its performance to not overheat.

Good point on the warranty...while EVGA does have good warranty service, as well, it is nice to have a single place to call for all problems.

You could still wait for the R9 390X's...they should fair better with close proximity of multiple GPUs with their integrated AIO cooler, similar to the R9 295X2. You can barely fit it in the Air 540, but it looks doable with each of the 3 120mm rads and fans from the GPUs on the front and the H110i GT on the top.

Maybe Alex or Nav can answer whether the Titan X cards completely idle the fans at low temperatures once they get those cards in stock.

.

Edited by Gnicky - 19 Mar 2015 at 6:35pm

Thanks Alex and Nav! Interesting that they don't stop them completely. I'm guessing there were substantial benefits to keeping at least a minimal air flow through the heat sink.

Dax if i were you i would ask DS if they could special order one of the Swiftech H-X water coolers, if need be you can expand them later to the graphics cards

Edited by ArkansasWoman777 - 19 Mar 2015 at 7:36pm