Rank #4 in Best 512GB MicroSD Card 2026: 10 Ranked, and Why Read Speed Misleads
Lexar Blue 512GB microSDXC UHS-I Card
Price and rating as shown on Amazon when we collected them. Both change.
The Lexar Blue 512GB microSDXC sits at number four in our guide to 512GB microSD cards, priced at £99.99 with a 4.7 rating from 3,169 Amazon reviews. Lexar markets it as a UHS-I card with reads up to 160MB/s, A2 app performance, V30 video class and IPX7 waterproofing.
The reason it is not higher up is the same reason the two SanDisk cards at the top of the list are not immune: the headline read figure and the rest of the listing do not line up. Lexar's first bullet promises up to 160MB/s, yet the specification table on the same page lists Media Speed of 40 MB/s — a quarter of the advertised figure, and the number that governs how fast files actually move. The card also has a compatibility field that reads 'Gaming Console' while the bullets talk about drones, dash cams, IP cams, tablets and phones. Everything on this page is taken from the Amazon listing for this card; we have not benchmarked it ourselves.
How those 3,169 ratings break down
An average hides its own shape. This is the spread behind the 4.7 stars.
Specification
Exactly as published on the Amazon listing, field for field.
| Price | £99.99 |
|---|---|
| Rating | 4.7 out of 5 from 3,169 ratings |
| Advertised read speed | Up to 160 MB/s |
| Media speed (as listed) | 40 MB/s |
| Speed classes (as listed) | Class 10, U3, V30, A2 |
| Capacity | 512 GB (bullet mentions up to 2TB "coming soon") |
| Warranty | 10-year limited manufacturer warranty |
| Durability | IPX7 waterproof, temperature resistance, X-ray protection, shock resistance to 1.5 m |
What buyers actually say
Quoted from customer reviews on Amazon
Verified purchase“Worked immediately with a file transfer speed (laptop) of 50 -60 Mb/s.”
Verified purchase“Great little device that can store up to 30,000 songs”
What it is up against
The rivals it was ranked against in Best 512GB MicroSD Card 2026: 10 Ranked, and Why Read Speed Misleads.
Questions people ask
How fast does the Lexar Blue 512GB microSD card actually transfer files?
The listing gives two different figures. The first bullet claims read speeds of up to 160MB/s, while the specification table on the same page lists Media Speed of 40 Megabytes Per Second.
Can the Lexar Blue 512GB card record 4K video?
The listing states it captures and plays back Full-HD and 4K UHD video, and lists a V30 video speed class alongside Class 10 and U3.
Is the Lexar Blue microSD card waterproof?
Yes, as listed. Lexar states IPX7 waterproofing plus temperature resistance, X-ray protection and shock resistance up to 1.5 metres.
What devices does the Lexar Blue 512GB card work with?
The listing is inconsistent here. Its 'Compatible Devices' field says Gaming Console, while the bullets name gaming consoles, tablets, portable gaming devices, drones, IP cams and dash cams.
Does the Lexar Blue card come with a warranty?
The listing gives a 10-year limited warranty, with the warranty type field simply marked 'Limited' and the manufacturer given as Lexar Co.,LTD.
Is a 512GB Lexar Blue card the largest size available?
This page is for the 512GB version. The Lexar listing says capacities up to 2TB are 'coming soon'.
Comments
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