Awesome! ..thread.
I recently shelled out for a highish-end gaming computer; it's a bit of an animal. Pretty proud, since I had to salvage my old rig, build the new one, do the cable management (none-modular PSU... -__-) and ... then install and set up Windows. x_x Took over 6 hours to have it all sorted, but it was worth it! To be fair, it was the first time I'd fitted an Intel CPU/cooler, unless you count P2s from way back when.
The tower itself has cost me about £1000. x_x If you include the OS, that is. (OS was around £80) May have been more if you take into account things like cables and the thermal paste, ... actually, luckily the cooler (Hyper 212 EVO) came with Cooler Master paste.
It has amazing performance.
Specs are:
Zalmon Z11 case with the red fan theme, with tons of storage space, great cable management support, and sleek design.
CPU is the
i5 4690K @ Stock, typically the sweet-spot for the upper-end of gaming performance.
GPU is the
ASUS 760 OC @ Stock, which uses 2x 8-pin power sockets, and has 2GB video RAM.
DDR3 RAM is
Corsair XM3 1600MHz currently
@ 1333MHz, since the difference between the two is negligible.
Motherboard is the modern
ASUS Z97-K with its UEFI BIOS that hosts a lot of useful features, such as limited DC 3-pin fan control.
PSU is the
Corsair TX750 Enthusiast Edition, sadly none-modular; I've had it for quite some times, and it's done the job well.
HDDs are 1x
500GB, 1x
1TB, and 1x
1TB external. All
S-ATA 3, of course. xD
CD drive... is some
CD/DVD RW that I can't remember.
OS is
Windows 8.1
I plan to add an SSD at some point, but it's pretty fast without, so I dunno if that'll happen. I'd like to replace the front fan (powered by Molex) as it's a bit too loud of my liking.
If you're curious, I use an ASUS IPS monitor, 23", and 1080p
Performance is basically all the modern games play at ultra or near to ultra with 60fps constant, at 1080p, unless they're badly optimised, which, nowadays, they often are. xD
I play Farcry 3, Borderlands 2, Sleeping Dogs, and Skyrim at the moment, all at 60fps with max or near-max settings.

I'm loving Skyrim as it's got over 20 graphical mods; looks pretty cool, and runs at a sweet 60fps, with max settings, too!
Prior to this PC, I had an AMD FX-4100 @ the highest of 4.2GHz which was a good CPU, but it was
seriously bottlenecking my ASUS 760 OC, so I'm very glad I went with such a good gaming Intel CPU.
As for temps: after over 4 hours of gaming on Farcry 3, the rig hit 78c on the GPU, and 66c on the CPU, both perfectly safe, 'though ideally, I'd like the GPU to be a few degrees lower, but it's nothing to worry about. My window was closed and the rig heated my room up nicely.

Totally saves on central heating as I just play games and my room gets toasty in no time.
Sorry if that was a little
too much info, but you asked!