Is this card fast enough for 4K video?

Yes. It carries U3 and V30 ratings, which guarantee the sustained write speed 4K UHD recording needs in most cameras.

Does it work in a UHS-II slot?

It fits, but it runs at UHS-I speeds. You get the card's rated read and write rates, not the higher UHS-II throughput.

The 128GB SDXC card and a full-size SD reader.

Is it worth it over a cheaper U1 card?

For stills and 4K video, yes. The U3/V30 rating and higher write speed avoid the buffer stalls and recording stops that slower cards cause.

Which devices is it compatible with?

Any device with a full-size SDXC slot, including most mirrorless and DSLR cameras and many camcorders. Check that your device supports SDXC cards above 32GB.

Samsung PRO Plus MB-SD128SB Flash memory card 128 GB SDXC UHS-I

Best price now

$44.99at WalmartChecked Nov 8

Prices are checked against each store and labelled with when.

Visit Walmart

Samsung PRO Plus MB-SD128SB Flash memory card 128 GB SDXC UHS-I

Best price now

$44.99at WalmartChecked Nov 8

Prices are checked against each store and labelled with when.

Visit Walmart

Samsung discount code →

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 $44.99 at Walmart on Nov 8.

Our take on the Samsung PRO Plus MB-SD128SB Flash memory card 128 GB SDXC UHS-I

The Samsung PRO Plus is a UHS-I SDXC card rated U3, V30 and Class 10, with claimed read speeds up to 180MB/s and write speeds up to 130MB/s. It targets 4K UHD and FHD video recording in cameras and camcorders, and it ships with a full-size SD reader. Against UHS-II cards it gives up peak throughput, but it costs far less and covers most mirrorless and DSLR shooting. Owners rate it highly, with 4.8 out of 5 from 115 ratings, and praise its speed and reliability.

Best forMirrorless and DSLR stills shooters4K UHD and FHD video recordingBurst shooting and fast card offloadsBuyers who want a reader in the box

Pros

Read speeds up to 180MB/s and writes up to 130MB/s
U3, V30 and Class 10 ratings for sustained 4K video
128GB capacity holds long recording sessions
Full-size SD reader included
Strong owner ratings for reliability

Cons

UHS-I interface, slower than UHS-II cards in compatible slots
Write speed drops in the largest capacities on some UHS-I cards
No V60 or V90 rating for high-bitrate cinema formats

Samsung PRO Plus MB-SD128SB Flash memory card 128 GB SDXC UHS-I prices at every store

WalmartNew
In stockSold by Datavision Computer VideoReturns: Sold by a Walmart Marketplace seller; returns go to the seller under the seller's returns policy.
$44.99Free shippingChecked Nov 8
Visit Walmart

What reviewers say

4.8 / 5115 ratings

Owners rate the card 4.8 out of 5 across 115 ratings and mostly praise its speed and dependability in cameras. Complaints are few and center on the UHS-I ceiling rather than failures.

What people mention

SpeedPraisedOwners say reads and writes are quick enough for burst stills and 4K clips.
ReliabilityPraisedReviewers report no corruption or dropouts in regular camera use.
InterfaceMixedSome note the UHS-I bus limits throughput compared with UHS-II cards.
ReaderPraisedBuyers like that a full-size SD reader comes in the box.

About the Samsung PRO Plus MB-SD128SB Flash memory card 128 GB SDXC UHS-I

This is a 128 GB SDXC flash memory card from Samsung's PRO Plus line. It reads at up to 180 MB/s and writes at up to 130 MB/s.

It is rated UHS-I Speed Class 3 (U3), Class 10 and V30, for recording 4K UHD and FHD video. It includes a full-size SD reader.

Capacity: 128 GB
Card type: SDXC
Interface: UHS-I
Read speed: Up to 180 MB/s
Write speed: Up to 130 MB/s
Speed class: UHS Speed Class 3 (U3), Class 10, V30
Video: 4K UHD and FHD
Model: MB-SD128SB
Included: Full-size SD reader

Questions and answers

Is this card fast enough for 4K video?: Yes. It carries U3 and V30 ratings, which guarantee the sustained write speed 4K UHD recording needs in most cameras.
Does it work in a UHS-II slot?: It fits, but it runs at UHS-I speeds. You get the card's rated read and write rates, not the higher UHS-II throughput.
What is in the box?: The 128GB SDXC card and a full-size SD reader.
Is it worth it over a cheaper U1 card?: For stills and 4K video, yes. The U3/V30 rating and higher write speed avoid the buffer stalls and recording stops that slower cards cause.
Which devices is it compatible with?: Any device with a full-size SDXC slot, including most mirrorless and DSLR cameras and many camcorders. Check that your device supports SDXC cards above 32GB.
Where is the Samsung PRO Plus MB-SD128SB Flash memory card 128 GB SDXC UHS-I cheapest?: At Walmart, for $44.99, as of our latest check.
What do buyers say about the Samsung PRO Plus MB-SD128SB Flash memory card 128 GB SDXC UHS-I?: Rated 4.8 out of 5 from 115 ratings.