We compared two 128GB microSD cards: the SanDisk Extreme microSD Card 128GB and the Integral Premium High Speed microSD Card 128GB.
What we looked at
Read and write speeds, speed class ratings, durability, and price.
The verdict
If you shoot 4K video on action cameras or drones and want faster speeds, the SanDisk Extreme is the pick at £24.63. If you would rather save £3.78 and are happy with up to 100MB/s reads, the Integral Premium is the alternative, at £20.85.

A £24.63 card with up to 190MB/s reads, 90MB/s writes and A2.

A £20.85 card with up to 100MB/s reads, 50MB/s writes and A1.
SanDisk Extreme microSD Card + Adapter 128GB, up to 190MB/s — Fastest
Intended for: Marketed as a 128GB microSD card with an adapter, with read speeds of up to 190MB/s and write speeds of up to 90MB/s, UHS-I U3 and Video Speed Class V30 for 4K UHD, an A2 app performance rating, and construction described as temperature-proof, waterproof, shockproof and X-ray proof. Carries 4.7 stars from 101.6K ratings on this listing.
What we liked
- Up to 190MB/s reads and 90MB/s writes per the listing
- A2 rating for app performance
- 4K UHD-ready with U3 and V30
- Highest star rating of the pair (4.7) on a very large review base
Worth knowing
- Costs £3.78 more than the Integral on these listings
- Top speeds need a compatible reader, per the listing
Best for
- Buyers shooting 4K on action cameras, drones or phones
- Anyone who wants an A2 rating for apps
- Those who want the highest-rated option
Not ideal for
- Budget-conscious buyers
- Anyone who only needs a basic storage card
Integral 128GB microSD Card Premium High Speed 4K Video — Best Value
Intended for: Marketed as a 128GB microSD card with up to 100MB/s read and 50MB/s write speeds, a UHS-I U3 Class 10 rating for 4K video, an A1 app performance rating, and water-resistant, shock-proof, temperature-resistant and X-ray-proof construction, from a brand with over 50 million cards sold. Carries 4.6 stars from 55.3K ratings on this listing.
What we liked
- Cheaper than the SanDisk on these listings, at £20.85
- U3 and Class 10 rating for 4K video
- Water-resistant, shock-proof and X-ray proof per the listing
- Large review history (55.3K ratings)
Worth knowing
- Slower stated speeds than the SanDisk (100MB/s read vs 190MB/s)
- A1 app rating rather than the SanDisk's A2
Best for
- Buyers who want the lower price
- Anyone using it in a phone, tablet or console
- Those who do not need top speeds
Not ideal for
- Buyers who want the fastest transfer speeds
- Anyone who wants an A2 app rating



