Alright, I'll bite. (and challenge accepted!)
CPU: Intel Core i7-3930k, overclocked to 4.8Ghz, cooled with a Corsair H110i GTX with four Noctua 140mm iPPC-2000 PWM fan's in push-pull configuration.It's an older hexacore (12 logical) model at this point, but it still clocks high enough to stay competitive with overclocked newer chips, so I haven’t had a reason to upgrade since I got it in late 2011
RAM: 64GB (8x8GB) DDR3-1866. (I forget the brand)32 of these are used for a RAM Disk on which I load RO2 at boot. Fast map loads FTW.
GPUs: Two EVGA GeForce 980Ti ACX2.0+ SC+ in SLI. One with 82% ASIC, the other 72%.The coolers are removed, and I have installed Corsair's HG10 N980 cooling bracket. Each GPU is thus cooled with a Corsair H90, and each has two of the same Noctua fans I use for the CPU.
Motherboard: ASUS P9x79 WS, X79 LGA2011 board
SSD: Intel SSD750D 400GB PCIe SSD.
HDD: None. I rely on my 48TB custom built NAS in my basement for my file storage needs.
NIC: 10Gbit Brocade BR-1020 with a fiber optic transducer direct connected to NAS above for local-like speeds. (Rest of network is via onboard gigabit NIC)
Sound: Creative Sound Blaster X-Fi Titanium HDThis is hooked up via RCA line out to my dedicated Schiit Audio headphone amp, and my Beyerdynamic DT770 Pro headphones.
I also have a set of LOUD Logitech z623 2.1 speakers, which I barely ever use.
Case: Corsair 750D Airflow Edition full tower case.
PSU: Silverstone Strider ST1200 Gold, Modular, 80+ Gold, 1200W.
Mouse: Logitech G502 Proteus Core (I liked my old, dead G500 better)
Mouse Pad: Ratpadz, of course. Only the original and best will do.
Keyboard: Unicomp Buckling Spring mechanical keyboard. (based on the old school IBM boards)
Monitors: Center: Samsung JS9000 48" 4k HDTV, Sides: One 20" Dell 2007FP in portrait mode on each side.
I have no idea how much I've spent on this thing from the start.I rarely if ever do new builds from scratch. I replace parts as needed. I consider my desktops to be constant works in progress. Oldest parts in this one are from late 2011. Newest parts are the case and coolers. I'd probably be horrified if I tallied it all up, but that being said, some people's hobby is to work on cars, mine is computers and server/enterprise network hardware. (my hobby is cheaper )
Some pics from before I installed the HG10 N980's: (Click for bigger)
Sound: I want to get an external Schiit Bifrost DAC, and run an optical SPDIF cable to it from the Titanium HD instead of my current setup, for better sound.
GPU: I hate SLI with a passion (but not as much as I hate crossfire). Buggy, adds input lag, having to muck with SLI profiles, etc. etc. not to mention poor scaling. When big Pascal is launched, I will be evaluating if a single top end model can replace my two 980ti's for 4k in the games and at the settings I play. If not, I'll be waiting for the next gen top end AMD GPU and evaluating it. (I have no brand loyalty)
What do you do for Nvidia? Got any juicy details on Pascal?