SD Card Speed = 90MB/s Easily - PS4+XBOX1 Were using Slow Laptop 5400RPM 70MB/s~ most of your library (99.9%) will run just fine on Steam Deck (Just slower loading) the 399$ Model
SD Cards: Speed Class vs Speed Performance - MyMemory Blog
Samsung announces high-speed 64GB UHS-I SD and microSD cards
SanDisk unveils microSD card that goes up to 95MB/s
Micro SD Cards for Development Boards - Classes, Tools, Benchmarks, Reliability, and Tips & Tricks - CNX Software
A Guide to Speed Classes for SD and microSD Cards - Kingston Technology
Speed Class | SD Association
Top 10 Best MicroSD Memory Cards | ePHOTOzine
Speed Test microSD, SD & CF Cards - YouTube
microSD and SD Card Buying Guide | TechSpot
SanDisk's microSD Cards With Transfer Speeds up to 100MB/s Start at Less Than $9 Today
Picking the Right SD Card: What do the numbers mean? | Expert photography blogs, tip, techniques, camera reviews - Adorama Learning Center
Micro SD Card 256GB with Adapter High Speed Card for Nintendo Switch, Class 10 Memory Card for Android Smartphone Digital Camera Tablet and Drone - Walmart.com
A Tale of Tablet Storage: USB 3 vs micro-SDXC - Ed Tittel