"I've got $1k to spend..." Take a hike, that's a crap budget!
"I've got $3.5k to spend..." We recommend spending $1k for these crappy parts.
LOL WTF?! I don't understand the recommendations here at all. If he has $3.5k and wants Intel/Nvidia then he wants X299 and a 1080ti.
PCPartPicker part list:
https://pcpartpicker.com/list/ZWtHFd
Price breakdown by merchant:
https://pcpartpicker.com/list/ZWtHFd/by_merchant/
CPU: Intel - Core i7-7820X 3.6GHz 8-Core Processor ($599.00 @ Amazon)
CPU Cooler: Noctua - NH-D15 82.5 CFM CPU Cooler ($88.15 @ Amazon)
Motherboard: Asus - STRIX X299-E GAMING ATX LGA2066 Motherboard ($349.99 @ B&H)
Memory: Corsair - Vengeance LPX 32GB (4 x 8GB) DDR4-3600 16-16-16-36 ($389.99 @ Newegg)
Storage: Samsung - 960 EVO 500GB M.2-2280 Solid State Drive ($219.99 @ Amazon)
Storage: Toshiba - X300 4TB 3.5" 7200RPM Internal Hard Drive ($115.99 @ Amazon)
Video Card: EVGA - GeForce GTX 1080 Ti 11GB SC2 Video Card ($719.99 @ Newegg)
Case: Fractal Design - Define S ATX Mid Tower Case ($69.99 @ Newegg)
Power Supply: SeaSonic - PRIME Platinum 750W 80+ Platinum Certified Fully-Modular ATX Power Supply ($127.89 @ Newegg)
Operating System: Microsoft - Windows 10 Home OEM 64-bit ($89.89 @ OutletPC)
Case Fan: Fractal Design - X2 GP-14 (White) 68.4 CFM 140mm Fan ($12.99 @ NCIX US)
Monitor: Acer - XB271HU bmiprz 27.0" 2560x1440 165Hz Monitor ($699.99 @ B&H)
Total: $3483.85
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2017-06-28 12:51 EDT-0400
7820k has high clock speeds so it can match a 7700k in single threaded workloads, but has twice the cores to smash it's face in when real work needs to be done.
NH-D15 because it's the best air cooler (that easily competes with AIO water), one of (if not) the quietest coolers for it's TDP capacity, and for a high end system like X299 you
need airflow over the VRMs and other components (which water wouldn't provide).
I haven't done research/reading on X299 MOBOs yet, so I just chose a mid-range option from the tier 1 manufacturer. There are other good brands too, and perhaps there's a better fit for your needs and/or a better value (you usually do get more for your money with ASRock and Gigabyte).
With a budget like this, this system will be around for years, so skimping on RAM is just stupid. You're paying for more cores and quad channel to feed it, so you want 4 sticks...with the optimal total being 32GB. So I've selected a 32GB kit with a higher range speed and low latency. I also considered the height restrictions with the NH-D15, so this RAM should be an excellent fit for the system.
960 Evo is an obvious choice, great balance of speed, reliability, and cost. Then a standard disk for mass storage. You can add more and/or larger drives if you wish...
You wanted Nvidia, this is their best gaming GPU...and EVGA is the premier Nvidia manufacturer.
Case is always a personal preference kinda thing. So I simply selected a properly sized (again, NH-D15), silence oriented, high quality, well reviewed case in a standard unoffensive black box shape. I also included an additional matching 140mm for you to place in the front panel to provide the extra airflow that a high end system will need.
A quality PSU is always important, but especially for a power hungry system like this. Seasonic Prime PSU's are probably the best available, and I think 750w is the ideal size for this system as is. I expect it'll use 350-400w under load (not stress load), and it's best to keep your typical load at 50-65% of the max power on your PSU.
Win 10 64bit, I don't really see any other option for a modern gaming system. You could get pro vs home if you had a reason.
I'll admit I don't know much about high end Gsync displays (I've got my own preferences)...so I selected one of the two that were recommended by Newbian.