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Deal.ai › SanDisk › Memory Cards
SANDISK
SanDisk Extreme UHS-I U3 MicroSDXC Memory Card 512GB

SanDisk Extreme UHS-I U3 MicroSDXC Memory Card 512GB

Best price now

$189.98at NeweggChecked Nov 8

Compared across 2 stores. Prices are checked against each store and labelled with when. Store links may earn us a commission. Price via Klarna.

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Price facts

  • Last seen at $189.98 at Newegg on Nov 8.
  • Checked at 2 stores.

Our take on the SanDisk Extreme UHS-I U3 MicroSDXC Memory Card 512GB

The SanDisk Extreme is a UHS-I microSDXC card rated V30, U3 and A2, aimed at action cameras, drones, phones and handheld consoles. Its A2 rating means faster app loading on Android devices, and V30 covers 4K video recording at up to 30 fps. It sits above the Ultra line and below the Extreme Pro, which adds faster sequential writes for heavy burst shooting. Owners generally report reliable 4K capture and quick transfers, though sustained write speed drops on long continuous recordings.

Best forAction cameras and drones shooting 4KNintendo Switch and Android phone storageDash cams and security camerasPhotographers who need one card for stills and video
Pros
  • V30 and U3 ratings handle 4K video at 30 fps
  • A2 app performance class speeds up Android app loading
  • 512GB holds hours of 4K footage or a large game library
  • UHS-I works in most cameras, phones and consoles without adapters
  • Rated for temperature, water, shock and X-ray resistance
Cons
  • UHS-I interface caps sequential speed below UHS-II and UHS-III cards
  • Sustained write speed falls during long continuous 4K recording
  • Not the fastest option for high-frame-rate burst photography
  • Full-size SD slots need an adapter, which is not included

SanDisk Extreme UHS-I U3 MicroSDXC Memory Card 512GB prices at every store

  • NeweggNew

    In stock

    $189.98+ $7.85 shippingChecked Nov 8
    Visit Newegg
  • Best BuyNew

    In stock

    $206.94Free shippingChecked Nov 8
    Visit Best Buy

Store links may earn us a commission. Some prices via Klarna.

SanDisk Extreme UHS-I U3 MicroSDXC Memory Card 512GB price history

$189.98$189.98
Nov 8Nov 9

Lowest price we've seen: $189.98 on Nov 8 at Newegg. Tracked across 2 stores since Nov 8.

What reviewers say

Reviewers and owners treat the Extreme as a dependable mid-tier card for 4K action cameras, drones and the Switch. Most praise stable recording and fast offloads; some report slower sustained writes on long clips and occasional card errors after heavy use.

What people mention
  • Write speedMixedOwners say burst and short-clip writes are quick, but sustained speed falls during long 4K recordings.
  • ReliabilityMixedMost report years of trouble-free use, while some describe corruption or a dead card after heavy use.
  • 4K recordingPraisedAction camera and drone users say V30 keeps 4K footage stable without dropped frames.
  • Transfer speedPraisedReviewers note fast read speeds when offloading footage to a computer.
  • CapacityPraisedBuyers like fitting a large game or photo library on one card without swapping.
  • ValueMixedSome say the Ultra line covers everyday needs for less, while others think the extra speed is worth it.

Specifications

Video Speed Class
V30Source
SD Type
microSDXCSource
Memory Size
512 GBSource
App Performance Class
A2Source
UHS Interface

Questions and answers

Is this card fast enough for 4K video?
Yes. The V30 rating guarantees a minimum 30 MB/s write speed, enough for 4K at 30 fps in most action cameras and drones. Higher frame rates or high-bitrate codecs may need a faster card.
Will it work in a Nintendo Switch?
Yes. The 512GB capacity and A2 rating suit the Switch, and the card installs without any adapter. Games load from it at similar speeds to the internal storage.
How is it different from the SanDisk Extreme Pro?
The Extreme Pro uses the same UHS-I interface but has higher sequential write speeds, which helps with burst shooting and long high-bitrate clips. The Extreme is the better fit for casual 4K and everyday storage.
Does it come with an SD adapter?
Retail packs usually include a full-size SD adapter, but card-only listings may not. Check the pack contents if you need one for a camera with a standard SD slot.
Is it compatible with Android phones?
Yes, if your phone has a microSDXC slot. The A2 rating helps apps stored on the card launch faster, though adoptable storage support varies by phone.
Can I use it in a dash cam?
Yes, but dash cams write continuously and wear cards faster. SanDisk's high-endurance line is built for that workload; the Extreme works but may not last as long under constant recording.
Where is the SanDisk Extreme UHS-I U3 MicroSDXC Memory Card 512GB cheapest?
At Newegg, for $189.98, as of our latest check.
Where can I buy the SanDisk Extreme UHS-I U3 MicroSDXC Memory Card 512GB?
2 stores we checked sell it, including Newegg, Best Buy.

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Stores we've priced the SanDisk Extreme UHS-I U3 MicroSDXC Memory Card 512GB at

  • Best Buy deals and prices
  • Newegg deals and prices

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UHS-ISource
UHS Speed Class
U3Source