Is this card fast enough for 4K video?

It is rated Class 10 and UHS-I with up to 100 MB/s read, but no write speed or V rating is published. It handles 1080p well; for sustained 4K, a V30 card is the safer choice.

Does it come with an SD adapter?

Yes. The card ships with a full-size SD adapter so it fits standard SD slots in laptops and card readers.

Will it work in a phone or tablet?

Yes, it is a microSDXC card for devices with a microSD slot. Check that your device supports 512GB cards, since some older phones cap at 256GB or lower.

Is it compatible with action cameras and drones?

It fits any device with a microSD slot, but check the camera maker's recommended card list. Demanding 4K modes often call for V30 or faster cards.

How does it compare with UHS-II cards?

UHS-I tops out around 104 MB/s, so UHS-II cards are much faster in devices that support them. This card is the budget option for everyday use.

What do buyers say about the Lexar 512GB High Performance 633X MicroSDHC UHS-I?

Rated 3.6 out of 5 from 14 ratings.

Lexar 512GB High Performance 633X MicroSDHC UHS-I

Best price now

$90.90at WalmartChecked Nov 8

Prices are checked against each store and labelled with when.

Visit Walmart

Lexar 512GB High Performance 633X MicroSDHC UHS-I

Best price now

$90.90at WalmartChecked Nov 8

Prices are checked against each store and labelled with when.

Visit Walmart

Ask our agent about this product

It checks today's price at every store, compares the alternatives and answers in about a minute.

Price facts

Last seen at $90.90 at Walmart on Nov 8.

Our take on the Lexar 512GB High Performance 633X MicroSDHC UHS-I

The Lexar High-Performance 633x is a UHS-I, Class 10 microSD card rated up to 100 MB/s read, sold in a 512GB capacity with a full-size SD adapter in the box. It is aimed at phones, tablets, action cameras and drones that record 1080p and some 4K. The large capacity suits people who want to keep a whole trip or library on one card. Against rival UHS-I cards it is a budget-leaning option: the headline speed is read speed, and the write speed is not rated, so it trails UHS-II and V30-marked cards for sustained 4K recording. Its 3.6-out-of-5 rating from 14 buyers points to a mixed reception, with complaints about reliability and real-world speed.

Best forPhone and tablet storage expansion1080p action camera and drone recordingCarrying a large photo and video library on one cardBuyers who want an SD adapter included

Pros

512GB capacity holds a large library of photos and video
Rated up to 100 MB/s read for quick file transfers
Class 10 and UHS-I, fine for 1080p and many 4K cameras
Includes a full-size SD adapter for laptops and card readers
Works across phones, tablets, action cameras and drones

Cons

Write speed is not rated, so sustained 4K recording is a gamble
No V30 or A2 marking for video or app performance
Mixed buyer ratings, with reports of failures and lost files
UHS-I only, slower than UHS-II cards in compatible devices
No listed warranty terms or endurance rating

Lexar 512GB High Performance 633X MicroSDHC UHS-I prices at every store

WalmartNew
In stockSold by KenzUSAReturns: Sold by a Walmart Marketplace seller; returns go to the seller under the seller's returns policy.
$90.90Free shippingChecked Nov 8
Visit Walmart

What reviewers say

3.6 / 514 ratings

Buyer feedback is mixed. Some owners are happy with the capacity and transfer speed for phones and 1080p cameras, while others report cards that failed or slowed down and cost them data.

What people mention

ReliabilityCriticisedSeveral buyers report cards that failed or corrupted files, which is the main drag on its rating.
Write speedMixedThe 100 MB/s figure is read speed; owners say writes are slower and can stutter with 4K recording.
CapacityPraisedBuyers like fitting a large photo and video library on a single card.
AdapterPraisedThe included SD adapter is seen as handy for laptops and card readers.
ValueMixedOwners see it as a cheap way to add space, but some feel the savings are not worth the risk.

About the Lexar 512GB High Performance 633X MicroSDHC UHS-I

This is a 512GB Lexar High-Performance 633x microSD card with UHS-I technology. It is designed for smartphones, tablets, and action cameras. It lets you capture, play back, and transfer 1080p Full HD, 3D, and 4K video, as well as photos, movies, and songs.

The card is Class 10 and reads at speeds up to 100 MB/s. It comes with an SD adapter for easy file transfer.

Capacity: 512GB
Card type: microSD (microSDHC/microSDXC) UHS-I
Speed class: Class 10, 633x
Read speed: Up to 100 MB/s
Video support: 1080p Full HD, 3D, 4K
Compatibility: Smartphones, tablets, action cameras
Color: Black
In the box: microSD card, SD adapter

Specifications

color: BlackSource
size: 512GBSource

Questions and answers

Is this card fast enough for 4K video?: It is rated Class 10 and UHS-I with up to 100 MB/s read, but no write speed or V rating is published. It handles 1080p well; for sustained 4K, a V30 card is the safer choice.
Does it come with an SD adapter?: Yes. The card ships with a full-size SD adapter so it fits standard SD slots in laptops and card readers.
Will it work in a phone or tablet?: Yes, it is a microSDXC card for devices with a microSD slot. Check that your device supports 512GB cards, since some older phones cap at 256GB or lower.
Is it compatible with action cameras and drones?: It fits any device with a microSD slot, but check the camera maker's recommended card list. Demanding 4K modes often call for V30 or faster cards.
How does it compare with UHS-II cards?: UHS-I tops out around 104 MB/s, so UHS-II cards are much faster in devices that support them. This card is the budget option for everyday use.
Where is the Lexar 512GB High Performance 633X MicroSDHC UHS-I cheapest?: At Walmart, for $90.90, as of our latest check.
What do buyers say about the Lexar 512GB High Performance 633X MicroSDHC UHS-I?: Rated 3.6 out of 5 from 14 ratings.