First own PC build for gaming in 4K

[Deleted]

I want to build a PC mainly for casual gaming. Most of my time I will be playing League of Legends, which isn't very demanding, but I will be playing other single player games casually, like Assassin's Creed Origins (as an example). I like to play them at high settings with the best graphical experience possible, but still smooth game-play (no stuttering, etc.)

I just purchased a 4K monitor and would like to play in 4K as well, but if my GPU (currently a single GTX1070) cannot handle it, I'm willing to play in lower resolutions (1440 or 1080). Eventually I want to SLI my 1070 so I can run 4K in 60 FPS. I'm not sure if that is viable or if I'd need a 1080 SLI setup for that.
My budget is about 1500 euros in about 4 months. If necessary I'm willing to wait a little longer till I have enough to build the PC I really want.

I live in the Netherlands, but Germany has Amazon and I have family there who could be willing to purchase products for me if it is significantly cheaper.

PCPartPicker part list / Price breakdown by merchant

CPU: Intel - Core i7-8700K 3.7GHz 6-Core Processor (€424.90 @ Alza)
CPU Cooler: Cooler Master - Hyper 412S 52.6 CFM CPU Cooler (€31.34 @ Amazon Deutschland)
Motherboard: Asus - ROG Strix Z370-H Gaming ATX LGA1151 Motherboard
Memory: Corsair - Vengeance LPX 16GB (2 x 8GB) DDR4-3000 Memory (€182.93 @ Mindfactory)
Storage: Samsung - 850 EVO 500GB M.2-2280 Solid State Drive (€169.90 @ Amazon Deutschland)
Video Card: Asus - GeForce GTX 1080 Ti 11GB STRIX GAMING Video Card (€899.99 @ ARLT)
Power Supply: Corsair - RMx 750W 80+ Gold Certified Fully-Modular ATX Power Supply
Operating System: Microsoft - Windows 10 Home OEM 64-bit (€93.17 @ Mindfactory)
Total: €1802.23
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2017-11-18 19:42 CET+0100

Update 18/11: I made a few changes. Added the 1080 Ti, upped the RAM to 3000 MHz, changed PSU from 850 to 750.

I have doubts about the CPU, I want something that is future proof, but I don't want to overshoot either.

Finally, I have no clue about the motherboard and PSU. I just picked something that looked compatible and was recommended. I looked at how many slots it has for RAM, PCI slots, etc. but I still have a feeling I don't really know if there are better (cheaper) alternatives.

[Svisalith]

Get ~3000mhz RAM as a baseline, RAM performance has pretty big performance impacts in some games

[Thunderball]

What do you have currently on hand? PSU, motherboard, GPU?1070 is not fit for anything remotely demanding in 4K, and SLI is not really an option, I suggest selling your 1070 and getting a 1080/1080Ti.

[Deleted]

What do you have currently on hand? PSU, motherboard, GPU?1070 is not fit for anything remotely demanding in 4K, and SLI is not really an option, I suggest selling your 1070 and getting a 1080/1080Ti.

I currently only have the GPU. Some people did also recommend getting the 1080 ti and I will be getting that and selling the 1070.

My current setup is pretty outdated, so motherboard is not compatible with anything recent: Asus P8P67 with i7-2600. My PSU is decent but I can already hear the fan rattling sometimes, so I think it might not last more than a few months. Basically, 6 year old PC which was pretty high end when I bought it.

[draynay]

Did you already have Assassin's Creed? I'd point out that the ASUS GPUs bundle it with their cards, but only for the next few days.

[Thunderball]

PCPartPicker part list / Price breakdown by merchant

CPU: Intel - Core i5-8600K 3.6GHz 6-Core Processor (€369.00 @ ARLT)
Motherboard: ASRock - Z370 Extreme4 ATX LGA1151 Motherboard (€163.84 @ Mindfactory)
Memory: G.Skill - Ripjaws V Series 16GB (2 x 8GB) DDR4-3200 Memory (€152.56 @ Amazon Deutschland)
Storage: Intel - 600p Series 512GB M.2-2280 Solid State Drive (€175.92 @ Mindfactory)
Video Card: EVGA - GeForce GTX 1080 Ti 11GB SC2 Video Card (€768.78 @ Mindfactory)
Case: Fractal Design - Meshify C ATX Mid Tower Case (€90.35 @ Mindfactory)
Power Supply: SeaSonic - FOCUS Plus Gold 650W 80+ Gold Certified Fully-Modular ATX Power Supply (€90.68 @ Mindfactory)
Other: TR HR-02 Macho Rev.B Multiple Heatpipe Kühler, Intel LGA 775/1366/1156/1155/2011/1150/2011-3, AMD AM2(+)/AM3(+)/FM1/FM2(+), TY 147A PWM Lüfter (300 - 1.300 U/min, 15 - 21 dBa, 28,7 - 125 m³/h) (€47.12 @ Amazon Deutschland)
Total: €1858.25
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2017-11-19 06:15 CET+0100

Or:

PCPartPicker part list / Price breakdown by merchant

CPU: Intel - Core i7-8700K 3.7GHz 6-Core Processor (€424.90 @ Alza)
CPU Cooler: Fractal Design - Celsius S24 87.6 CFM Liquid CPU Cooler (€105.99 @ ARLT)
Motherboard: ASRock - Z370 Extreme4 ATX LGA1151 Motherboard (€163.84 @ Mindfactory)
Memory: G.Skill - Ripjaws V Series 16GB (2 x 8GB) DDR4-3200 Memory (€152.56 @ Amazon Deutschland)
Storage: Intel - 600p Series 512GB M.2-2280 Solid State Drive (€175.92 @ Mindfactory)
Video Card: Palit - GeForce GTX 1080 8GB GameRock Video Card (€528.00 @ Amazon Deutschland)
Case: Fractal Design - Meshify C ATX Mid Tower Case (€90.35 @ Mindfactory)
Power Supply: SeaSonic - FOCUS Plus Gold 650W 80+ Gold Certified Fully-Modular ATX Power Supply (€90.68 @ Mindfactory)
Total: €1732.24
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2017-11-19 06:16 CET+0100

Get Windows from Kinguin. I suspect you can get at least 300 for your 1070, so your budget should be around 1800 EUR. Obviously ideally you go with a combination of those, but that's going to be far beyond your budget, so I suggest going with #1.

[Tommi]

CPU Cooler: Fractal Design - Celsius S24 87.6 CFM Liquid CPU Cooler (€105.99 @ ARLT)

I have the Celsius S36 cooling my 8700K, and it's an amazing cooler. My 8700K idles at 26C and the fans are only spinning 500rpm and are virtually silent.