Rank #6 in Best 128GB SD Cards 2026: 10 Ranked, and Three Adverts That Contradict Themselves
Integral Ultima PRO 128GB SDXC Card (100MB/s)
Price and rating as shown on Amazon when we collected them. Both change.
The Integral 128GB SDXC card sits sixth in this guide to 128GB SD cards. At £25.95 it is one of the dearer cards in the set, and it carries a strong record: 4.5 out of 5 from 12,645 ratings, with 74 of the 100 ratings shown in the breakdown sitting at five stars and 4 sitting at one star.
The finding for this card is inside its own model number. The model is given as INSDX128G-100/90V30, which reads as 100MB/s read and 90MB/s write. The bullets in the same advert say "up to 100MB/s read speed and 50MB/s write speed", and the media speed field is listed as 50. Two of those numbers agree with each other; the 90 in the model number turns up nowhere else in the advert. Everything below — speeds, capacity, compatibility, warranty — is taken from the Amazon listing as it stands, not from any testing we have done on the card.
How those 12,645 ratings break down
An average hides its own shape. This is the spread behind the 4.5 stars.
Specification
Exactly as published on the Amazon listing, field for field.
| Price | £25.95 |
|---|---|
| Rating | 4.5 out of 5, 12,645 ratings |
| Capacity | 128GB, SDXC |
| Advertised read speed | Up to 100MB/s |
| Write speed in the bullets | 50MB/s |
| Media speed field | 50 (as listed) |
| Model number | INSDX128G-100/90V30 |
| Speed class | V30, U3, UHS-I, Class 10 |
What buyers actually say
Quoted from customer reviews on Amazon
Verified purchase“Brilliant, bought so I could download the latest satnav update from hyundai for my tucson , tried to do it with a SanDisk 32gb which I had but failed after several attempts to download, however using this new integral 32gb it downloaded straight away”
Verified purchase“Works absolutely fine with my canon R7 in the 2nd slot. No issues.”
What it is up against
The rivals it was ranked against in Best 128GB SD Cards 2026: 10 Ranked, and Three Adverts That Contradict Themselves.
Questions people ask
How fast is the Integral 128GB SD card?
The bullets claim up to 100MB/s read and 50MB/s write. The spec fields separately list the read speed as 100 megabytes per second and the media speed as 50.
What does the 100/90 in the Integral model number mean?
The advert does not explain the model number INSDX128G-100/90V30, and the 90 does not match the 50MB/s write figure given in the bullets and the media speed field of the same listing.
Is the Integral 128GB card suitable for 4K video?
The advert lists it as V30, U3, UHS-I, Class 10 and 4K Ultra-HD video ready, on an SDXC card.
Which cameras does the Integral listing say it works with?
The compatible devices field names the Canon M50 Mark II, Canon T8i (850D), Nikon D5600, Panasonic FZ300/330, Panasonic LX10/LX15 and Sony ZV-1.
What warranty does the Integral card come with?
The listing gives a lifetime warranty and claims high temperature resistance, water resistance, shock proofing and X-ray proofing. The brand also claims over 50 million memory cards sold.
Does the Integral 128GB card include a reader?
No reader is mentioned anywhere in the advert. The listing is for one item, in one pack, weighing 4g and measuring 32 by 24 millimetres.
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