Help with gaming pc buld

The 7900X is a powerful CPU but not the best for gaming. The core speeds of the i7-7700K are much faster and it has more than enough threads. As well the Z270 mobos are basically the same as the X299 but the Z270's are much cheaper.

Added a quality SSD, you will be glad that you have this. Its not the fastest out there but it is plenty fast and gaming performance is not directly affected.

The power supply is really not a good one, replaced it with a Titanium 850W.

I dropped the sound card, unless you will be using it for something like sound editing it really is not needed.

Went with the X61 cooler, considered to the one of the best if not the best on the market.

I left the RAM at 32GB in case you want to do some streaming but you really don't need that much for gaming alone, 16GB will be more than enough.

PCPartPicker part list: https://pcpartpicker.com/list/TdgBBP
Price breakdown by merchant: https://pcpartpicker.com/list/TdgBBP/by_merchant/

CPU: Intel - Core i7-7700K 4.2GHz Quad-Core Processor ($308.87 @ Amazon)
CPU Cooler: NZXT - Kraken X61 106.1 CFM Liquid CPU Cooler ($119.99 @ B&H)
Motherboard: Asus - MAXIMUS IX HERO ATX LGA1151 Motherboard ($206.98 @ Newegg)
Memory: Corsair - Vengeance LPX 32GB (4 x 8GB) DDR4-3600 Memory ($369.99 @ Newegg)
Storage: Samsung - 850 EVO 500GB M.2-2280 Solid State Drive ($184.94 @ OutletPC)
Storage: Seagate - Barracuda 2TB 3.5" 7200RPM Internal Hard Drive ($66.89 @ OutletPC)
Video Card: Gigabyte - GeForce GTX 1080 Ti 11GB AORUS Xtreme Edition 11G Video Card ($769.99 @ Amazon)
Case: Fractal Design - Define R5 w/Window (Titanium) ATX Mid Tower Case ($92.99 @ NCIX US)
Power Supply: SeaSonic - PRIME Titanium 850W 80+ Titanium Certified Fully-Modular ATX Power Supply ($196.99 @ SuperBiiz)
Optical Drive: Pioneer - BDR-209DBK Blu-Ray/DVD/CD Writer ($58.88 @ OutletPC)
Operating System: Microsoft - Windows 10 Home Full - USB 32/64-bit ($102.99 @ SuperBiiz)
Sound Card: Creative Labs - 70SB157000000 Sound Card ($38.87 @ OutletPC)
Wireless Network Adapter: TP-Link - Archer T9E PCI-Express x1 802.11a/b/g/n/ac Wi-Fi Adapter ($66.99 @ Best Buy)
Case Fan: Fractal Design - GP14-WT 68.4 CFM 140mm Fan ($12.99 @ SuperBiiz)
Case Fan: Fractal Design - GP14-WT 68.4 CFM 140mm Fan ($12.99 @ SuperBiiz)
Total: $2611.34
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2017-08-01 15:12 EDT-0400

No its not worth the money at all.
Its a ridiculous build for consumer use full stop let alone for gaming.

The i9 is not a consumer chip , its aimed at workstation use

You could get exactly the same gaming performance for £1500.

That vs PSU isn't good quality enough to run a £400 PC let alone a £2.5k one.

PCPartPicker part list / Price breakdown by merchant

CPU: Intel - Core i7-7700K 4.2GHz Quad-Core Processor (£298.00 @ Amazon UK)
CPU Cooler: Corsair - H100i v2 70.7 CFM Liquid CPU Cooler (£105.97 @ Amazon UK)
Motherboard: MSI - Z270 GAMING M5 ATX LGA1151 Motherboard (£162.30 @ Amazon UK)
Memory: Corsair - Vengeance LPX 32GB (2 x 16GB) DDR4-3000 Memory (£253.98 @ Amazon UK)
Storage: Crucial - MX300 525GB M.2-2280 Solid State Drive (£144.46 @ Amazon UK)
Storage: Seagate - Barracuda 2TB 3.5" 7200RPM Internal Hard Drive (£67.50 @ Amazon UK)
Video Card: EVGA - GeForce GTX 1080 Ti 11GB SC2 HYBRID GAMING Video Card (£623.88 @ Amazon UK)
Case: Phanteks - Enthoo Pro M ATX Mid Tower Case (£66.94 @ Amazon UK)
Power Supply: Corsair - 750W 80+ Gold Certified Fully-Modular ATX Power Supply (£134.50 @ Amazon UK)
Optical Drive: LG - WH14NS40 Blu-Ray/DVD/CD Writer (£63.68 @ Amazon UK)
Operating System: Microsoft - Windows 10 Home OEM 64-bit
Wireless Network Adapter: TP-Link - Archer T9E PCI-Express x1 802.11a/b/g/n/ac Wi-Fi Adapter (£51.99 @ Amazon UK)
Monitor: Asus - MG279Q 27.0" 2560x1440 144Hz Monitor (£499.99 @ Amazon UK)
Total: £2473.19 ( + Windows)
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2017-08-01 20:42 BST+0100

You should go for a monitor like the above to exprerience full potential of your build , with 3600mhz Ram frequency you wont notice any difference in gaming against 3000mhz . Also i didnt add sound card .

Oops, missed the GBP symbol. Here is the build again in pounds, only had to change the OS. FYI, I did not include a monitor in my build as M04D18 did. If a monitor and/or keyboard/mouse are needed then I would change some of my selections.

PCPartPicker part list: https://uk.pcpartpicker.com/list/vGYNbj
Price breakdown by merchant: https://uk.pcpartpicker.com/list/vGYNbj/by_merchant/

CPU: Intel - Core i7-7700K 4.2GHz Quad-Core Processor (£298.00 @ Amazon UK)
CPU Cooler: NZXT - Kraken X61 106.1 CFM Liquid CPU Cooler (£101.80 @ Alza)
Motherboard: Asus - MAXIMUS IX HERO ATX LGA1151 Motherboard (£227.36 @ More Computers)
Memory: Corsair - Vengeance LPX 32GB (4 x 8GB) DDR4-3600 Memory (£365.16 @ Amazon UK)
Storage: Samsung - 850 EVO 500GB M.2-2280 Solid State Drive (£158.98 @ Ebuyer)
Storage: Seagate - Barracuda 2TB 3.5" 7200RPM Internal Hard Drive (£55.80 @ Aria PC)
Video Card: Gigabyte - GeForce GTX 1080 Ti 11GB AORUS Xtreme Edition 11G Video Card (£690.86 @ CCL Computers)
Case: Fractal Design - Define R5 w/Window (Titanium) ATX Mid Tower Case (£96.96 @ Ebuyer)
Power Supply: SeaSonic - PRIME Titanium 850W 80+ Titanium Certified Fully-Modular ATX Power Supply (£216.06 @ Amazon UK)
Optical Drive: Pioneer - BDR-209DBK Blu-Ray/DVD/CD Writer (£58.14 @ Aria PC)
Operating System: Microsoft - Windows 10 Home OEM 64-bit (£82.20 @ Aria PC)
Sound Card: Creative Labs - 70SB157000000 Sound Card (£38.80 @ Alza)
Wireless Network Adapter: TP-Link - Archer T9E PCI-Express x1 802.11a/b/g/n/ac Wi-Fi Adapter (£51.00 @ Aria PC)
Case Fan: Fractal Design - GP14-WT 68.4 CFM 140mm Fan (£9.63 @ Ebuyer)
Case Fan: Fractal Design - GP14-WT 68.4 CFM 140mm Fan (£9.63 @ Ebuyer)
Total: £2460.38
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2017-08-01 20:56 BST+0100

Well your budget is quite high , thats why we choose 32gb ram / monitor / expensive parts etc , you can have close to same performance for under 2k .
16 Gb Rams are plenty for gaming at the moment but the least you must buy with a 1000+ budget

Are you going to professionally edit videos? Or is it Windows Movie Maker?

Heres the 1500 quid build I promised you,I based it part on logains build & cost cut without compromising quality.
I dont think you need the ryzen 1700 or 32gb of ram at all so theyve gone.
The 1600 is fine on the stock cooler,you can overclock it with ease.

That 1080ti is not available for anywhere near the price partpicker lists,its 700 quid & unless youre going 4k is just an obscene waste of money.
The 1080 is more than enough .

I left logain's choice of drive storage in there because in all honesty theyre exactly what I would buy myself
In all fairness the build below is still way too powerful to be running on a 1080p tv but the future proofing is there so imo its worth it.
Its just not worth spending any more realistically.

PCPartPicker part list / Price breakdown by merchant

CPU: AMD - Ryzen 5 1600 3.2GHz 6-Core Processor (£186.00 @ Amazon UK)
Motherboard: ASRock - Fatal1ty AB350 Gaming K4 ATX AM4 Motherboard (£97.98 @ CCL Computers)
Memory: G.Skill - Trident Z 16GB (2 x 8GB) DDR4-3000 Memory (£130.80 @ Aria PC)
Storage: Crucial - MX300 1.1TB M.2-2280 Solid State Drive (£240.00 @ Amazon UK)
Storage: Toshiba - 3TB 3.5" 7200RPM Internal Hard Drive (£72.26 @ Eclipse Computers)
Video Card: Gigabyte - GeForce GTX 1080 8GB WINDFORCE OC 8G Video Card (£494.92 @ More Computers)
Case: Phanteks - Enthoo Pro M Tempered Glass ATX Mid Tower Case (£89.99 @ Novatech)
Power Supply: EVGA - SuperNOVA G2 650W 80+ Gold Certified Fully-Modular ATX Power Supply (£84.98 @ Amazon UK)
Optical Drive: LG - UH12NS40 Blu-Ray Reader, DVD/CD Writer (£48.30 @ Eclipse Computers)
Operating System: Microsoft - Windows 10 Home OEM 64-bit (£82.20 @ Aria PC)
Total: £1527.43
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2017-08-02 18:13 BST+0100