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SanDisk Extreme microSD Card vs SanDisk Extreme 64GB microSDXC

Buy the 64GB card for almost everyone. It doubles capacity and is rated U3/V30, which is the safer fit for 4K video in drones and action cameras. The 32GB card is A2-rated and lists higher read and write speeds, but those figures apply to the larger capacities in the line, and 32GB fills fast with 4K footage. Owners rate both highly; the 64GB edges ahead on ratings and is the better long-term pick.

  • Choose the SanDisk Extreme 32GB if you shoot mostly photos and 1080p video and want a spare card for a phone or a second camera.
  • Choose the SanDisk Extreme 64GB if you record 4K video on a drone or action camera and want more room before you offload footage.

Prices

  • SanDisk Extreme microSD Card: $34.99 at posrgoutlet.com (last seen Nov 8)
  • SanDisk Extreme 64GB microSDXC: $42.90 at tme.com (last seen Nov 8)
  • Difference: the SanDisk Extreme microSD Card is $7.91 cheaper than the SanDisk Extreme 64GB microSDXC at the latest prices (Nov 8)
SanDisk
SanDisk Extreme UHS Memory Card

SanDisk Extreme microSD Card

SanDisk Extreme UHS Memory Card

4.7(11,000 ratings)
$34.99at posrgoutlet.comObserved Nov 8, 2026, 8:11 PM
See all prices and details
Visit posrgoutlet.com
Pros
  • A2 rating speeds up apps stored on the card
  • Higher stated read and write speeds
  • Ships with a full-size SD adapter
  • Rated waterproof, shockproof, temperature-proof and X-ray proof
Cons
  • 32GB fills quickly with 4K video
  • Speed ratings for this capacity are lower than the headline figures
SanDisk
SanDisk Extreme 64GB microSDXC Memory Card

SanDisk Extreme 64GB microSDXC

SanDisk Extreme 64GB microSDXC Memory Card

4.8(3,100 ratings)
$42.90at tme.comObserved Nov 8, 2026, 7:03 PM
See all prices and details
Visit tme.com
Pros
  • Double the capacity for long 4K shoots
  • U3/V30 rating suited to 4K in drones and action cameras
  • Slightly higher owner rating
  • Same durability protections as the Extreme line
Cons
  • Lower stated read and write speeds than the 32GB listing
  • No adapter listed
  • No A2 app rating stated

What separates them

SanDisk Extreme microSD CardSanDisk Extreme 64GB microSDXC
Capacity32 GB64 GB
Video speed ratingUHS-I with A2 app rating; U3/V30 listed for the lineClass 10, UHS-I; U3/V30 for 4K
Stated read speedUp to 190 MB/sUp to 160 MB/s
Stated write speedUp to 130 MB/sUp to 90 MB/s
App performance ratingA2Not stated
Durability ratingsWater, shock, temperature and X-ray proofSame Extreme line durability
Included adapterYesNot listed
Owner ratings4.7 from about 11,000 ratings4.8 from about 3,100 ratings

Price history

$29.99$24.00
Nov 8Nov 9
  • SanDisk Extreme microSD Card: lowest $24.00 on Nov 8 at Advexure; $24.00 on Nov 9.
  • SanDisk Extreme 64GB microSDXC: lowest $29.99 on Nov 9 at Adorama.

Prices at every store

SanDisk Extreme microSD Card

  • posrgoutlet.comNew

    In stock

    $34.99Observed Nov 8, 2026, 8:11 PM
    Visit posrgoutlet.com
  • WalmartNew

    In stockSold by First Choice Online

    $36.89Observed Nov 8, 2026, 8:11 PM
    Visit Walmart
  • SearsNew

    In stockSold by Teds Electronics

    $41.99Observed Nov 8, 2026, 8:11 PM
    Visit Sears
  • Teds ElectronicsNew

    In stock

    $42.99Observed Nov 8, 2026, 8:11 PM
    Visit Teds Electronics

Also available at

  • AdvexureCheck price at Advexure
  • eBayCheck price at eBay
  • eBayCheck price at eBay

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All 10 stores and price history →

SanDisk Extreme 64GB microSDXC

  • tme.comNew

    In stock

    $42.90Observed Nov 8, 2026, 7:03 PM
    Visit tme.com
  • QuillNew

    In stock

    $47.99Free shippingObserved Nov 8, 2026, 7:01 PM
    Visit Quill
  • AntonlineNew

    In stock

    $51.04Free shippingObserved Nov 8, 2026, 7:01 PM
    Visit Antonline
  • Newegg.comNew

    Availability unknownSold by 3C Expert

    $49.99Observed Nov 8, 2026, 7:03 PM
    Visit Newegg.com

Also available at

  • AdoramaCheck price at Adorama
  • Best BuyCheck price at Best Buy
  • eBayCheck price at eBay

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

Specs compared

SpecSanDisk Extreme microSD CardSanDisk Extreme 64GB microSDXC
Speed ClassA2-rated, UHS-IClass 10
SD TypeSDHCmicroSDXC
Memory Size32 GB64 GB
UHS InterfaceUHS-IUHS-I
Read SpeedUp to 190 MB/s—
Write SpeedUp to 130 MB/s—
Card FormatmicroSDXC—
Supported Devicesdrones, action cameras, smartphone—
ResistanceWaterproof, Shockproof, Temperature-proof, X-ra…—
Storage TypemicroSDXC—
Included ComponentsAdapter—
WirelessYes—
Show all 21 specsShow fewer specs
SpecSanDisk Extreme microSD CardSanDisk Extreme 64GB microSDXC
Typical UsersEnthusiasts, Creators—
Form FactormicroSD—
Dimensions0.04" x 0.59" x 0.43" (L x W x H)—
Weight0.26 gms—
SD Format—microSDXC
Format—SD
SD Speed Class—Class 10, UHS Class 1
Color—Black
Capacity—64 GB

What reviewers say

SanDisk Extreme microSD Card

  • 4.7 / 511,000 ratings

Owners rate the Extreme highly, praising its reliability in GoPros, drones and phones and its real-world 4K recording. Complaints center on write speeds falling short of the headline figure and on cards failing after long use.

What people mention
  • ReliabilityPraisedOwners say it holds up in cameras, drones and phones through rough use.
  • Write speedMixedMany find it fast enough for 4K, but some say sustained writes fall short of the headline figure.
  • DurabilityPraisedWater, shock and temperature resistance is cited as a real benefit in the field.
  • App performancePraisedAndroid users note that the A2 rating makes apps stored on the card load quickly.

SanDisk Extreme 64GB microSDXC

  • 4.8 / 53,100 ratings

Owners rate it 4.8 out of 5 across 3,100 ratings, mostly for dependable 4K recording in action cameras and drones and for A2 app performance on phones. Complaints centre on write speed falling during long recordings and on cards running warm in continuous 4K.

What people mention
  • Write speedMixedFast for short bursts, but owners report slower sustained writes during long 4K clips.
  • 4K recordingPraisedOwners say it records 4K UHD in action cameras and drones without dropped frames.
  • App performancePraisedThe A2 rating makes apps stored on the card load noticeably faster on Android phones.
  • DurabilityPraised

Questions and answers

Which card is better for 4K video?
The 64GB card. Its U3/V30 rating is the one built for sustained 4K recording, and the extra capacity means fewer stops to offload clips.
Is the 32GB card faster?
On paper, yes: it lists up to 190 MB/s read and 130 MB/s write. In practice those headline numbers apply to the larger capacities in the line, and the 32GB card runs slower.
Which lasts longer?
Both carry the same water, shock, temperature and X-ray protections. The 64GB card spreads writes over more cells, so it tends to wear more slowly under heavy video use.
Do I need the adapter?
Only if you move the card to a laptop or camera with a full-size SD slot. The 32GB card includes one; the 64GB listing does not.
Is the 64GB worth stepping up to?
Yes for video shooters and drone pilots. The capacity and U3 rating matter more than the higher paper speeds of the smaller card.

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All 7 stores and price history →
Buyers report it surviving cold, wet and rough use in outdoor cameras.