SanDisk 128GB

📌 Capacity & Storage

• 128 GB capacity provides room for thousands of photos, hours of Full HD (1080p) and even 4K video, plus apps and files. 

⚡ Performance & Speed Ratings

Different SanDisk 128GB cards have different performance tiers:

✅ Entry / Everyday Use (Ultra)

• Bus type: UHS-I

• Speed class: Class 10, U1

• App class: A1 rated (better app performance)

• Read speeds: Up to ~100–140 MB/s

• Write speeds: Typically ~10 MB/s

• Good for photos, music, apps, and Full HD recording.

🚀 Mid-Range / Faster (Extreme)

• Bus type: UHS-I

• Speed class: Class 10

• Video class: U3 + Video Speed Class V30 (minimum write 30 MB/s)

• App class: A2 support on some models

• Read speeds: Up to ~160–190 MB/s

• Write speeds: Up to ~90 MB/s

• Better for 4K video recording, faster transfers, burst shots, and mobile gaming.

• ⚡ High-End (Extreme PRO)

• Like Extreme but with tighter performance:

  • Read speeds: Up to ~200 MB/s

  • Write speeds: Up to ~90 MB/s

  • Optimized for 4K UHD video, fast workflows, and large file transfers. 

🏎️ What the Speed Ratings Mean

• Class 10 (C10): Supports at least 10 MB/s write speed — good for Full HD video.

• UHS Speed Class (U1/U3): U3 supports higher minimum write speeds (~30 MB/s), better for 4K.

• Video Speed Class (V30): Ensures smooth 4K/360°/high bitrate video.

• A1/A2 App Classes: Optimizes performance for running apps directly from the card (especially useful on Android).

🧰 Durability & Protection

Most SanDisk cards are built tough:

• Shockproof

• Temperature-proof

• Waterproof

• X-ray proof

• (Some cards include a physical write-protect switch when they have an SD adapter). 

📱 Compatibility

These cards work with:

• Android phones & tablets

• DSLRs / mirrorless cameras

• Drones & action cameras

• Gaming devices (e.g., Nintendo Switch)

• Laptops / card readers with microSD or SD adapter support. 

🧠 Summary: When to Choose Which Type