# Integral Premium High Speed 512GB microSD Card

Source: https://www.ranked10.co.uk/tech/best-512gb-microsd-cards/integral-512gb-microsd-card
Ranked #9 in "Best 512GB MicroSD Card 2026: 10 Ranked, and Why Read Speed Misleads": https://www.ranked10.co.uk/tech/best-512gb-microsd-cards

- Price: £68.95 (checked on Amazon UK on 2026-09-15)
- Amazon rating: 4.6 from 55,255 ratings
- Buy on Amazon: https://www.amazon.co.uk/dp/B07K3DVKLS?tag=ranked10-21

The Integral 512GB MicroSD Card Premium High Speed is the ninth card in this guide. Integral's own bullet points put it at up to 100 MB/s read and up to 50 MB/s write, which is the same two-to-one gap the rest of the list shows: the headline read figure comes from offloading through a separate reader, while the 50 MB/s write figure is the one that decides whether 4K footage records without dropping frames.

The listing disagrees with itself twice. The model number is INMSDX512G-100/80V30, and nothing on the page explains what the 80 refers to when the bullets and the spec table both say 50 MB/s write. The app-performance rating also appears twice with different values — the bullet promises an A1 rating, while the Product Features line lists A2 next to V30, U3, UHS-I and C10. Everything on this page is taken from the Amazon listing as it stands, not from a card we tested ourselves.

## Specification

| Field | Value |
|---|---|
| Price | £68.95 |
| Rating | 4.6 out of 5 from 55,255 ratings |
| Advertised read speed | Up to 100 MB/s |
| Advertised write speed | Up to 50 MB/s (bullets and spec table) |
| Model number | INMSDX512G-100/80V30 |
| Speed class | UHS-I, U3, Class 10, V30 |
| App performance rating | A1 in the bullet points, A2 in the Product Features spec (as listed) |
| Capacity and format | 512 GB, microSDXC |

## Questions people ask

**What write speed does the Integral 512GB microSD claim?**

Both the bullet points and the spec table state up to 50 MB/s write, against up to 100 MB/s read.

**Does the model number match the advertised speeds?**

The model number is INMSDX512G-100/80V30. The page states 50 MB/s write nowhere near that suffix, and no part of the listing explains what the 80 stands for.

**Is this card rated A1 or A2?**

Both, depending on which part of the page you read. The bullet says 'A1 rating for reliable app performance'; the Product Features spec line lists 'V30, U3, A2, UHS-I, C10'.

**Is it suitable for 4K video?**

Integral states UHS-I, U3 and Class 10 for 'seamless 4K UHD and Full HD video recording', and the spec table adds V30 and '4K Ultra-HD video ready'.

**Which devices does Integral list as compatible?**

The bullets name smartphones, tablets, drones, action cameras and game consoles; the spec table names Action Cameras, Dash Cameras, Gaming Console, Smartphone and Tablet.

**What warranty is listed?**

The spec table gives Warranty Type as 'Limited'. No warranty period is stated on the page.