$2600 pc build any good?

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I’d propose this if you’re really after AMD. Better psu, cpu, monitor - get 144hz and gsync.

PCPartPicker part list / Price breakdown by merchant

CPU: AMD - Ryzen 7 2700X 3.7GHz 8-Core Processor ($329.99 @ Amazon)
CPU Cooler: Cooler Master - MasterLiquid ML240L RGB 66.7 CFM Liquid CPU Cooler ($59.99 @ Amazon)
Motherboard: Gigabyte - X470 AORUS ULTRA GAMING ATX AM4 Motherboard ($139.99 @ Amazon)
Memory: Corsair - Vengeance LED 16GB (2 x 8GB) DDR4-3000 Memory ($194.99 @ Newegg Business)
Storage: Crucial - MX500 1TB 2.5" Solid State Drive ($244.89 @ OutletPC)
Video Card: MSI - GeForce GTX 1080 8GB DUKE OC Video Card ($599.99...
Which this budget, I would suggest the new 2700x on a X470 motherboard, your b350 motherboard will have some thermal issues with ryzen 7, especially when you overclock and having an aio, vrm is just not good on all b350 boards. Also do you need 32 gb of ram? Because most b350/x370 board can only run 2 dimm at very high speed (2666+) 4 dimm are capped much lower speed. So I suggest if you are not using that much ram, drop it to 2 dimm.

Also your power supply, I would stay away from rosewill, Corsair rmx series or seasonic focus plus series are really good.
 
I’d propose this if you’re really after AMD. Better psu, cpu, monitor - get 144hz and gsync.

PCPartPicker part list / Price breakdown by merchant

CPU: AMD - Ryzen 7 2700X 3.7GHz 8-Core Processor ($329.99 @ Amazon)
CPU Cooler: Cooler Master - MasterLiquid ML240L RGB 66.7 CFM Liquid CPU Cooler ($59.99 @ Amazon)
Motherboard: Gigabyte - X470 AORUS ULTRA GAMING ATX AM4 Motherboard ($139.99 @ Amazon)
Memory: Corsair - Vengeance LED 16GB (2 x 8GB) DDR4-3000 Memory ($194.99 @ Newegg Business)
Storage: Crucial - MX500 1TB 2.5" Solid State Drive ($244.89 @ OutletPC)
Video Card: MSI - GeForce GTX 1080 8GB DUKE OC Video Card ($599.99 @ Newegg)
Case: Cooler Master - MasterBox Lite 5 RGB ATX Mid Tower Case ($59.99 @ Newegg)
Power Supply: SeaSonic - FOCUS Plus Gold 650W 80+ Gold Certified Fully-Modular ATX Power Supply ($79.98 @ Newegg)
Operating System: Microsoft - Windows 10 Home OEM 64-bit ($89.89 @ OutletPC)
Monitor: Dell - S2716DG 27.0" 2560x1440 144Hz Monitor ($453.52 @ Amazon)
Keyboard: ROCCAT - Isku FX Wired Gaming Keyboard ($99.99 @ Amazon)
Mouse: ROCCAT - TYON Wired Laser Mouse ($79.99 @ Best Buy)
Headphones: Corsair - VOID PRO RGB USB (White/Black) 7.1 Channel Headset ($59.99 @ Amazon)
Total: $2493.19
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2018-04-21 20:34 EDT-0400

Edit: for a few $ more you swap for an 8700k and Asrock z370 Extreme4.
 
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