Need Some Professional Advice

[B]Looking for suggestions for a dedicated ssd for windows files.

PCIe SSD?[/B]
Amazon.com: Plextor M8Pe 256GB M.2 PCIe NVMe Internal Solid-State Drive with Heatsink (PX-256PeG) : Electronics

OR SATA III?

https://www.amazon.com/gp/product/B01LZ09A68/?tag=tec06d-20

[SIZE=6]PARTS 4 NEW Build:[/SIZE]

[SIZE=5]Windows 10 Pro[/SIZE]

[SIZE=5]Monitor:
Dell 43" 4k Multi-Client Monitor (P4317Q)[/SIZE]

[SIZE=5]CASE:
NZXT Phantom 820 Computer Case
[/SIZE]
Amazon.com: NZXT Hue 2 Underglow Accessory - Two 300mm RGB LED Strips - 15 LEDs Per Strip - CAM-Powered - Immersive Desktop Lighting System : Everything Else

[SIZE=5]MOBO:
ASUS ROG Crosshair VI Hero AMD Ryzen AM4 [/SIZE]

Amazon.com: Asus ROG Crosshair VI Hero AMD Ryzen AM4 DDR4 M.2 USB 3.1 ATX X370 Motherboard with Aura Sync RGB Lighting : Electronics

[SIZE=5]CPU:
AMD Ryzen 7 1700 Processor[/SIZE]
(might go with 1800x for the extra 200mhz boost)

Amazon.com: AMD YD1700BBAEBOX Ryzen 7 1700 Processor with Wraith Spire LED Cooler : Electronics

[SIZE=5]RAM:
Corsair Vengeance LPX 16GB (2x8GB) DDR4 DRAM 3200MHz
[/SIZE]
Corsair Vengeance LPX DDR4 RAM 16GB (2x8GB) 3200MHz CL16-18-18-36 1.35V Intel AMD Desktop Computer Memory - Black (CMK16GX4M2B3200C16) at Amazon.com
[SIZE=5]
GPU:[/SIZE]
2 GTX 960’s (From old PC, planning on upgrading when a new series of nvidia gpu comes out)

[SIZE=5]SSD:[/SIZE]
[SIZE=4]Plextor M8Pe 128GB HHHL PCIe NVMe Internal Solid-State Drive with Heatsink
[/SIZE]

Amazon.com: Plextor M8Pe 256GB M.2 PCIe NVMe Internal Solid-State Drive with Heatsink (PX-256PeG) : Electronics

[SIZE=5]Storage:[/SIZE]
1T WD Caviar Drive, 3T Seagate backup plus & 4T seagate personal external HDs

PSU: (Already bought)

CPU COOLER:
Still deciding on a water cooler…suggestions are welcome.

Asrock Taichi is good choice for motherboard. Availability is somewhat poor but will get better.

That site http://www.asrock.com/news/events/ContentCreation/index.html is mostly advertising BS.

You don’t need 1200W PSU, even 650W is more than enough.

This SSD is better and cheaper Amazon.com: Mushkin REACTOR 1TB Internal Solid State Drive (SSD) 2.5 Inch SATA III 6Gb/s MLC 7mm MKNSSDRE1TB,Black : Electronics

Everything else seems like OK.

Ryzen 7 1800x is really not worth it, 1700 can be boosted to 4 GHz, the same as 1800x, it only doesn’t have automatic overclocking and has lower base frequency. 2 GTX 960 are really good, you should upgrade only if they are not enough for you. If I will buy new computer, I will save most money on case and buy some for 50 dollars, not for 200, but that’s only my opinion.