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
External hdd hard drive usb 3.0 pc mac xbox one ps4 500gb 750gb 1tb 1.5tb 2tb | eBay
Microsoft Xbox One X 1TB SSD Enhanced Gears 5 Limited Edition Arctic Blue Console, Gears 5
Best SSDs for PS4 and How to Upgrade to PS4 SSD
How to upgrade or replace your PS4 Hard Drive to SSD
PlayStation 4 Pro upgraded with 8TB QVO 870 SSD - Geeky Gadgets
Seagate Game Drive 4Tb Black and blue - PS4 accessories Seagate Technology on LDLC
How to use your Crucial X8 Portable SSD with your Playstation 4 | Crucial.com
PS4 Pro SSD Upgrade: Does SATA III Make a Difference? - PC Perspective
Fantom Drives 2TB PS4 SSHD (Solid State Hybrid Drive/SSD+HDD) Upgrade Kit, Seagate Firecuda, Compatible with PlayStation 4, PS4 Slim, and PS4 Pro - Walmart.com
The 9 Best Hard Drives for PlayStation 4, Tested by Lifewire
Tutorial: How to clone PS4 Original HD to a New SSD HD - YouTube
PS4 Slim vs. PS4 Pro: Which PlayStation should you buy? | Android Central
The 9 Best Hard Drives for PlayStation 4, Tested by Lifewire
Amazon.com: ssd for ps4 pro
What is the Best SSD for PS4? Top 10 Picks - Updated January 2022 - Hayk Saakian
The 5 Best SSDs for PlayStation 4 in 2020: More Storage = More Fun - Game Gavel
The Best SSD Drives for PS4 Game Console | PS4 Storage Expert
Best replacement SSD for PS4 in 2022 | Android Central