# SanDisk 512GB Extreme PRO microSDXC Card

Source: https://www.ranked10.co.uk/tech/best-512gb-microsd-cards/sandisk-extreme-pro-512gb-microsdxc
Ranked #1 in "Best 512GB MicroSD Card 2026: 10 Ranked, and Why Read Speed Misleads": https://www.ranked10.co.uk/tech/best-512gb-microsd-cards

- Price: £115.00 (checked on Amazon UK on 2026-09-15)
- Amazon rating: 4.7 from 40,803 ratings
- Buy on Amazon: https://www.amazon.co.uk/dp/B09X7DQJQL?tag=ranked10-21

The SanDisk Extreme PRO 512GB is the card at number one in this guide. It is a microSDXC card, listed as Class 10, U3 and V30, rated A2 for app performance, and supplied with a RescuePro Deluxe licence.

Like every card on the list, it leads with a read speed: 200 MB/s. Its own bullets put the write figure at 140 MB/s for continuous shots, and the spec table's Media Speed field says 140 MB/s as well — so this is one of the few listings here where the two numbers do not contradict each other. The qualification sits in the second bullet: 200 MB/s is an offload speed, and SanDisk says you need to pair the card with the SanDisk Professional PRO-READER SD and microSD, sold separately, to reach it. Everything on this page is taken from the Amazon listing, not from testing we carried out.

## Specification

| Field | Value |
|---|---|
| Price | £115.00 |
| Rating | 4.7 out of 5 from 40,803 ratings |
| Read speed | Up to 200 MB/s |
| Media Speed (as listed) | 140 MB/s |
| Speed class | Class 10, U3, V30, A2 |
| Capacity | 512 GB microSDXC |
| Maximum read speed requires | SanDisk Professional PRO-READER SD and microSD, sold separately |
| Warranty | Lifetime |

## Questions people ask

**Does the SanDisk Extreme PRO 512GB reach 200 MB/s on its own?**

The listing says offload speeds of up to 200 MB/s are powered by SanDisk Quick Flow Technology, and its second bullet says to pair the card with the SanDisk Professional PRO-READER SD and microSD to achieve maximum speeds, sold separately.

**What write speed does the SanDisk Extreme PRO 512GB list?**

Up to 140 MB/s, given for fast continuous shots. The spec table's Media Speed field also reads 140 MB/s, so the two agree here.

**Is the SanDisk Extreme PRO 512GB suitable for 4K recording?**

It is listed as Class 10, U3 and V30 with A2 app performance, and the listing quotes up to 140 MB/s write for continuous shots.

**Which devices does the SanDisk Extreme PRO 512GB support?**

The title names smartphones, action cameras and drones, and the compatible devices field lists camera and smartphone.

**How well reviewed is the SanDisk Extreme PRO 512GB?**

It carries 4.7 out of 5 from 40,803 ratings on the listing.

**What is the warranty on the SanDisk Extreme PRO 512GB?**

Lifetime, as stated in the listing. The card is also described as temperature-proof, water-proof, shock-proof and X-ray proof.