Is this card fast enough for 4K video?

Yes. The V30 rating guarantees a minimum sustained write speed of 30MB/s, which covers 4K recording on most action cameras, drones and phones.

What is the difference between this and the SanDisk Ultra?

The Extreme has higher write speeds and an A2 app performance rating, so it handles 4K video and phone apps better. The Ultra is aimed at basic photo and HD video use.

Do I need a special reader to get the claimed speeds?

A UHS-I reader helps. SanDisk says maximum speeds come with its PRO-READER, and a slow USB 2.0 reader will bottleneck transfers.

Will it work in a Nintendo Switch?

Yes. The Switch accepts microSDXC cards, and the A2 rating helps with game load times.

Is the 512GB capacity the usable space?

No. Some space is used by the card's formatting and file system, so the usable capacity is slightly lower.

Does it come with an SD adapter?

Retail packs of the SanDisk Extreme microSDXC usually include a full-size SD adapter for use in SD slots.

What do buyers say about the SanDisk Extreme microSDXC Class 10 UHS-I U3 V30 A2 512GB?

Rated 5 out of 5 from 43 ratings.

Where can I buy the SanDisk Extreme microSDXC Class 10 UHS-I U3 V30 A2 512GB?

3 stores we checked sell it, including Walmart, Newegg, eBay.

SanDisk Extreme microSDXC Class 10 UHS-I U3 V30 A2 512GB

Best price now

$105.99at WalmartChecked Nov 8

Prices are checked against each store and labelled with when.

Visit Walmart

SanDisk Extreme microSDXC Class 10 UHS-I U3 V30 A2 512GB

Best price now

$105.99at WalmartChecked Nov 8

Prices are checked against each store and labelled with when.

Visit Walmart

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Price facts

Last seen at $105.99 at Walmart on Nov 8.

Our take on the SanDisk Extreme microSDXC Class 10 UHS-I U3 V30 A2 512GB

The SanDisk Extreme microSDXC 512GB is a UHS-I card rated V30, U3 and A2, with claimed read speeds up to 190MB/s and write speeds up to 130MB/s. That combination suits 4K video in action cameras and drones, plus app storage on Android phones. It sits above basic Ultra cards on write speed and app performance, but it is still UHS-I, so it trails UHS-II and newer UHS-I cards with higher sustained writes in long bursts. Owners rate it highly for reliability in cameras and handhelds.

Best forAction camera and drone 4K recordingAndroid phone and tablet storage expansionNintendo Switch and handheld gamingDash cams and trail cameras

Pros

V30 and U3 ratings cover 4K video recording
A2 rating speeds up app installs and launches on phones
High read speed makes offloading footage quick
512GB holds hours of 4K footage
Widely compatible with microSDHC and microSDXC host devices

Cons

UHS-I interface caps sustained write speed versus UHS-II cards
Full claimed speeds need a UHS-I reader such as the SanDisk PRO-READER
Sustained writes can drop once the card's cache fills
No Wi-Fi, so transfers need a reader or cable

SanDisk Extreme microSDXC Class 10 UHS-I U3 V30 A2 512GB prices at every store

WalmartNew
In stockSold by First Choice OnlineReturns: Sold by a Walmart Marketplace seller; returns go to the seller under the seller's returns policy.
$105.99Free shippingChecked Nov 8
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SanDisk Extreme microSDXC Class 10 UHS-I U3 V30 A2 512GB price history

$118.95$118.95

Nov 8Nov 9

Lowest price we've seen: $118.95 on Nov 8 at Newegg. Tracked across 1 store since Nov 8.

What reviewers say

5 / 543 ratings

Buyers rate the card very highly, praising its speed and reliability in action cameras, drones and phones. Complaints are rare and mostly concern sustained write speed under long continuous recording.

What people mention

SpeedPraisedOwners say transfers are quick and 4K recording runs smoothly.
ReliabilityPraisedBuyers report the card holding up in cameras, drones and phones.
CapacityPraisedThe 512GB size is seen as roomy for long 4K shoots and game libraries.
Sustained writeMixedSome note write speed falls during long continuous recording once the cache fills.
Reader dependenceMixedReviewers point out that top speeds require a capable UHS-I reader.

About the SanDisk Extreme microSDXC Class 10 UHS-I U3 V30 A2 512GB

The SanDisk Extreme microSDXC™ memory card lets you save time transferring media with read speeds of up to 190MB/s powered by SanDisk QuickFlow™ Technology(64GB - 1TB). Pair with the SanDisk Professional PRO-READER SD and microSD™ to achieve maximum speeds (sold separately). With write speeds up to 130MB/s, it’s ideal for your Android™ smartphone, action cameras, or drones. This high-performance microSD™ card handles 4K UHD video recording, Full HD video, and high-resolution photos. Plus, it’s A2-rated, so you can get fast application performance for an exceptional smartphone experience. Compatibility Compatible with microSDHC, microSDXC, microSDHC UHS-I, and microSDXC UHS-I supporting host devices Product Features

Specifications

Video Speed Class: V30Source
SD Type: microSDXCSource
Memory Size: 512 GBSource
Wi-Fi: NoSource

Questions and answers

Is this card fast enough for 4K video?: Yes. The V30 rating guarantees a minimum sustained write speed of 30MB/s, which covers 4K recording on most action cameras, drones and phones.
What is the difference between this and the SanDisk Ultra?: The Extreme has higher write speeds and an A2 app performance rating, so it handles 4K video and phone apps better. The Ultra is aimed at basic photo and HD video use.
Do I need a special reader to get the claimed speeds?: A UHS-I reader helps. SanDisk says maximum speeds come with its PRO-READER, and a slow USB 2.0 reader will bottleneck transfers.
Will it work in a Nintendo Switch?: Yes. The Switch accepts microSDXC cards, and the A2 rating helps with game load times.
Is the 512GB capacity the usable space?: No. Some space is used by the card's formatting and file system, so the usable capacity is slightly lower.
Does it come with an SD adapter?: Retail packs of the SanDisk Extreme microSDXC usually include a full-size SD adapter for use in SD slots.
Where is the SanDisk Extreme microSDXC Class 10 UHS-I U3 V30 A2 512GB cheapest?: At Walmart, for $105.99, as of our latest check.
What do buyers say about the SanDisk Extreme microSDXC Class 10 UHS-I U3 V30 A2 512GB?: Rated 5 out of 5 from 43 ratings.
Where can I buy the SanDisk Extreme microSDXC Class 10 UHS-I U3 V30 A2 512GB?: 3 stores we checked sell it, including Walmart, Newegg, eBay.