Improve My Build

[tecurlee]

This was my first build ever and I completed it a couple of years ago.  Just curious what I did right and what I did wrong.  Help me to improve this system.

 

PCPartPicker part list / Price breakdown by merchant

Type	Item	Price
CPU	Intel - Core i5-4690K 3.5 GHz Quad-Core Processor	$270.00 @ Amazon
Motherboard	MSI - Z97-GAMING 5 ATX LGA1150 Motherboard
Memory	Kingston - HyperX Fury Black 8 GB (2 x 4 GB) DDR3-1866 Memory	$67.99 @ Amazon
Storage	Samsung - 850 EVO-Series 250 GB 2.5" Solid State Drive	$89.89 @ OutletPC
Storage	Western Digital - Caviar Blue 1 TB 3.5" 7200RPM Internal Hard Drive	$39.99 @ Monoprice
Video Card	MSI - GeForce GTX 970 4 GB Twin Frozr V Video Card
Case	Antec - Nine Hundred ATX Mid Tower Case	$79.99 @ Newegg
Power Supply	EVGA - SuperNOVA GS 550 W 80+ Gold Certified Fully-Modular ATX Power Supply	$89.89 @ OutletPC
Optical Drive	Asus - DRW-24B1ST/BLK/B/AS DVD/CD Writer	$14.99 @ Newegg Business
Operating System	Microsoft - Windows 10 Home OEM 64-bit	$98.89 @ OutletPC
Monitor	Acer - G236HLBbd 23.0" 1920x1080 60 Hz Monitor
Monitor	Asus - VG278HV 27.0" 1920x1080 144 Hz Monitor
Keyboard	Logitech - K350 Wireless Ergonomic Keyboard	$32.86 @ Amazon
Mouse	Logitech - M510 Wireless Laser Mouse	$14.24 @ Amazon
Speakers	Logitech - Z323 30 W 2.1ch Speakers	$34.79 @ Amazon
	Prices include shipping, taxes, rebates, and discounts
	Total (before mail-in rebates)	$873.52
	Mail-in rebates	-$40.00
	Total	$833.52
	Generated by PCPartPicker 2018-11-25 13:17 EST-0500

 

[Raudi_]

16GB of ram 
No wireless mice or keyboards (Back at that time I would of said it was a big no no)
The PSU for that Price you could of gotten something with a little more headroom that was Semi-Modular

[Fasauceome]

Honestly not bad, similar to my first rig from a few years back. Only thing is I got all my stuff used for a great price so the only error you made was buying 4th gen Intel stuff new of you did that