# SanDisk Extreme 128GB SDXC Card (180MB/s)

Source: https://www.ranked10.co.uk/tech/best-128gb-sd-cards/sandisk-extreme-sd-128gb
Ranked #4 in "Best 128GB SD Cards 2026: 10 Ranked, and Three Adverts That Contradict Themselves": https://www.ranked10.co.uk/tech/best-128gb-sd-cards

- Price: £30.89 (checked on Amazon UK on 2026-09-19)
- Amazon rating: 4.7 from 22,065 ratings
- Buy on Amazon: https://www.amazon.co.uk/dp/B09X7DZ9LG?tag=ranked10-21

The SanDisk Extreme SD 128GB is the number four card in this guide, priced at £31.00 with 4.7 stars from 22,047 ratings. It is a UHS-I card rated U3 and V30 for 4K UHD video and burst shooting, and it shows the pattern this guide keeps running into: the headline figure describes offloading to a computer, not shooting.

That headline is 180MB/s, and it appears twice — in the first bullet and in the Read Speed field of the spec table. The same bullet block adds that maximum speeds need a SanDisk Professional PRO-READER, sold separately, and puts shot speeds at up to 90MB/s. Then the spec table, two fields further down, carries a field headed Media Speed reading 20 megabytes per second. The listing never explains the gap. Everything on this page comes from the Amazon listing for the card and not from any test of our own.

## Specification

| Field | Value |
|---|---|
| Price | £31.00 |
| Rating | 4.7 out of 5 from 22,047 ratings |
| Read speed (bullets and spec field) | 180MB/s |
| Shot speed (bullets) | Up to 90MB/s |
| Media speed (as listed) | 20 megabytes per second |
| Capacity, class and video class | 128GB, Class 10, U3, V30 |
| Item weight | 2 g |
| Model number | SDSDXVA-128G-GNCIN |

## Questions people ask

**What read speed does the SanDisk Extreme 128GB claim?**

The first bullet and the Read Speed field of the spec table both say 180MB/s, and the bullet says that offload speed is powered by SanDisk QuickFlow Technology.

**What are the SanDisk Extreme's shot speeds?**

The third bullet says shot speeds up to 90MB/s, and repeats read speeds up to 180MB/s in the same line.

**Why does the spec table say 20MB/s?**

The listing does not say. Its Media Speed field reads 20 megabytes per second while the bullets claim up to 90MB/s shot speed, and nothing in the advert reconciles the two figures.

**Do I need to buy a reader to get the quoted speeds?**

The second bullet says maximum speeds are achieved by pairing the SanDisk Extreme with a SanDisk Professional PRO-READER SD and microSD, which is sold separately.

**Is the SanDisk Extreme suitable for 4K video?**

The listing describes it as perfect for shooting 4K UHD video and sequential burst mode photography, with UHS Speed Class 3 (U3) and Video Speed Class 30 (V30).

**How is the SanDisk Extreme 128GB rated?**

4.7 out of 5 from 22,047 ratings, with 81 of the ratings breakdown supplied sitting at five stars and 14 at four.