Just bought the Samsung T5 500GB SSD and ran some speed tests against the PS4 slim HDD. Not scientific by any means but got some some interesting results. See comment below. Btw
Sony PlayStation 4 Slim Storage Upgrade 2TB SSD PS4 Gaming Console, Jet Black, with Mytrix Dual-Controller Fast Charger - Enhanced PS4 with Large Capacity Internal Fast Solid State Drive - Walmart.com
870 EVO SATA 2.5" SSD 500GB Memory & Storage - MZ-77E500B/AM | Samsung US
Sony PlayStation 4 Slim Storage Upgrade 1TB SSD PS4 Gaming Console, Jet Black, with Mytrix Chat Headset - Enhanced PS4 Internal Fast Solid State Drive - Walmart.com
PlayStation 4 Slim 480GB SSD + 500GB HDD External - Game Console | alza.sk
Ps4 SSD PlayStation 4 已換500GB SSD, 電子遊戲, 電子遊戲機, PlayStation - Carousell
No PS5? How to Upgrade Your PS4 Hard Drive to an SSD for Faster Load Times | PCMag
OWC 500GB DIY Internal HDD to SSD Upgrade Bundle... at MacSales.com
Original Sony PlayStation 4 Slim 1TB Console - 500GB SSD Upgrade at Rs 17000 | Graphics Card in Chennai | ID: 25394898055
Original Sony PlayStation 4 Slim 1TB Console - 500GB SSD Upgrade at Rs 17000 | Graphics Card in Chennai | ID: 25394898055
Seagate 500gb Solid State Hybrid Drive Sshd Hard Disk Ssd Hdd Harddisk Hd Sata Iii 6gb/s 5400 Rpm 64m Cache 2.5" For Laptop Ps4 - Hard Disk Drive - AliExpress