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Lexar High-Performance 633x 256GB — Review & Specs | Pricepect | Pricepect

Home Memory CardsLexar High-Performance 633x 256GB

Lexar High-Performance 633x 256GB — image 1

Lexar

Lexar High-Performance 633x 256GB

$30.79

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LSDMI256BBNL633ABlack256GB lifetime

Expert Review Analysis

The Lexar High‑Performance 633x 256GB microSDXC is a Class 10 UHS‑I card offering up to 100 MB/s read speed and a 45 MB/s quoted write speed, with a V30 rating for reliable 4K video capture. It includes a microSD‑to‑SD adapter, A1/A2 app performance, and a limited lifetime warranty, positioning it as a solid mid‑range storage solution for smartphones, tablets, and action cameras.

✓ Best for: Smartphone and tablet owners needing ample extra storage, action‑camera users who record 4K video, and content creators who want a reliable, warranty‑backed card with an included SD adapter for quick transfers.✗ Not ideal for: Professional videographers or photographers requiring the fastest possible write speeds, users who need UHS‑II or UHS‑III bandwidth for 8K video, and anyone looking for the absolute highest read/write performance currently available.

Pros

✓Up to 100 MB/s sequential read speed enables fast file transfers and quick media playback.
✓UHS‑I technology with U3/V30 rating provides sustained 30 MB/s write speed for reliable 4K video recording.
✓

Price History

Current

$30.79

Average

$27.50

Lowest

$16.99

Highest

$30.79

Price trend (90d):0.0%

Best Seller Rank History

Now#127Best#76Worst#1,383 +396

Lower = better sales rank

Specifications

Accessories

Included AccessoriesmicroSD to SD adapter

Design

Height13.46 mm mm

Width14.99 mm mm

Depth1.02 mm mm

Weight453.6 g g

Package Weight11.34 g g

General

BrandLexar

ManufacturerLexar International

ModelLSDMI256BBNL633A

ColorBlack

Release Date2022-07-01

Performance

Read SpeedUp to 100 MB/s MB/s

Write Speed45 MB/s MB/s

Speed ClassClass 10

UHS Speed ClassU3, V30

Minimum Write Speed30 MB/s MB/s

Storage

Capacity256GB GB

Card TypemicroSDXC

Application Class

App PerformanceA1/A2 rating for improved app launch and operation when used as internal storage

Warranty

Card WarrantyLimited lifetime warranty for the microSDXC card

Adapter WarrantyOne‑year limited warranty for the included SD adapter

Quality Assurance

TestingExtensively tested in Lexar Quality Labs across thousands of cameras and devices

Video Support

Video Speed ClassV30 rating guarantees sustained 30 MB/s write speed for reliable 4K recording

Dimensions & Weight

Height0.53 inches

Width0.59 inches

Depth0.04 inches

Weight1.0 pounds

Research Sources

bhphotovideo.com

betteroffice.store

cameramemoryspeed.com

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User Reviews

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4.6

(13,673 reviews)

Includes a microSD‑to‑SD adapter, allowing use in full‑size SD card slots and easy data transfer to computers.

✓A1/A2 application class rating improves app performance when the card is used as internal storage on smartphones.

✓Limited lifetime warranty on the card and a one‑year warranty on the adapter give long‑term peace of mind.

✓Extensive testing in Lexar Quality Labs ensures compatibility with thousands of cameras and devices.

✓Wide compatibility with any UHS‑I device while remaining backward compatible with Class 10, V10 and U1 standards.

Cons

✗Write speed capped at 45 MB/s on paper, which is slower than newer Lexar BLUE cards that advertise up to 160 MB/s read speeds.
✗Only supports UHS‑I interface; lacks UHS‑II or UHS‑III bandwidth for the highest‑end professional workflows.
✗Mid‑range performance tier may not satisfy users who need the absolute fastest sequential write speeds for intensive 8K video capture.
✗No direct competitive comparison data provided, making it harder for buyers to gauge value against similar products.

From Expert Reviews

Praised by Experts

✓Independent benchmark with CrystalDiskMark recorded a peak sequential read of 96.7 MB/s, confirming the card meets its high‑speed claim.
✓The same benchmark showed a peak sequential write of 69.3 MB/s, substantially exceeding the manufacturer‑stated 45 MB/s write speed.
✓Consistent specifications across multiple years demonstrate Lexar’s commitment to maintaining performance standards.
✓V30 video speed class reliably supports 4K video capture without frame drops, as confirmed by professional testing.

Criticized by Experts

✗Professional reviewers note the card sits in the mid‑range segment, offering solid but not industry‑leading performance compared to newer high‑speed alternatives.
✗The UHS‑I only interface limits its suitability for workflows that demand the higher bandwidth of UHS‑II or UHS‑III cards.

From User Reviews

Users Love

✓Smartphone and tablet owners appreciate the extra 256 GB of storage for photos, videos, and apps, especially when the device supports UHS‑I.
✓Action‑camera enthusiasts value the V30 rating, which provides the sustained write speed needed for stable 4K recording during outdoor adventures.
✓Content creators like the included SD adapter because it simplifies moving large media files from mobile devices to desktop computers.
✓The lifetime warranty gives everyday users confidence that the card will last through regular daily use.

Expert Opinion

Professional testing shows the Lexar 633x card delivers real‑world read speeds near 97 MB/s and write speeds around 69 MB/s, surpassing its advertised specifications and confirming its suitability for 4K video capture. Reviewers acknowledge its solid mid‑range performance but point out that newer Lexar BLUE models provide higher peak speeds, making the 633x less compelling for users seeking top‑tier throughput.

What Users Say

Everyday users praise the large 256 GB capacity, the included SD adapter for easy file transfer, and the peace of mind from the lifetime warranty. They also highlight the card's reliable 4K video performance and compatibility with a wide range of devices. However, some users note the write speed feels modest compared to newer offerings, and the lack of UHS‑II support limits its appeal for high‑end professional use.

How It Compares

vs. Lexar BLUE microSDXC UHS‑I Card

Advantages

✓Higher advertised read speeds up to 160 MB/s provide faster file transfers.
✓Potentially higher write speeds make it more suitable for demanding 4K/8K workflows.

Disadvantages

✗May be priced higher than the 633x model, affecting budget‑conscious buyers.
✗Specific performance figures for write speed are not detailed in the source data.

Choose the 633x for reliable, warranty‑backed performance at a lower price, but opt for the Lexar BLUE if maximum speed is the top priority.

Rating Trend

Rating4.6/ 5Reviews13,673+-384 reviews +0.09

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