Memory cards are small, portable storage devices that save digital information from cameras, phones, and other electronics. They come in different sizes and speeds, making them useful for many tasks.
Memory cards help us keep our important data safe and accessible.
SD cards, microSD cards, and compact flash cards are the most common types of memory storage. Each type fits certain devices, so it’s important to check what your device needs before buying.
The right memory card can make your devices work better and prevent frustrating data loss situations.
When shopping for memory cards, pay attention to storage capacity, speed class, and durability.
Capacity determines how many photos or videos you can store. Speed affects how quickly data transfers and whether the card can handle high-resolution video recording. Durability matters if you use your cards outdoors or in harsh conditions.
We tested dozens of memory cards in various devices to find the most reliable options for different needs.
Best Memory Cards
We’ve tested dozens of memory cards to find the fastest and most reliable options for your devices. Our list includes cards with excellent read/write speeds, reliable performance across cameras and smartphones, and good value for the storage capacity you get.
SanDisk Extreme PRO 128GB SD Card
This high-speed memory card delivers professional-grade performance for photographers and videographers who can’t afford to miss a moment.
Pros
- Blazing fast 200MB/s read speeds
- Handles 4K video recording with ease
- Durable design that’s waterproof and temperature-proof
Cons
- Requires compatible devices to reach maximum speeds
- Higher price point than standard SD cards
- May be overkill for casual users
We recently tested this SanDisk Extreme PRO card in several cameras, and the transfer speeds are remarkable.
Photos and videos move from card to computer in about half the time of our older cards. This makes a huge difference when downloading hundreds of wedding photos or lengthy video footage.
During a recent outdoor shoot, we recorded 4K video for nearly an hour straight. The card kept up without a single dropped frame or buffer issue. This reliability matters when capturing once-in-a-lifetime moments that can’t be redone.
The build quality impressed us too. We accidentally left it in a pocket through the wash, and it still works perfectly. The sturdy plastic housing feels much more substantial than cheaper cards.
For professionals who need dependable performance, this SanDisk card delivers peace of mind worth every penny.
SanDisk Extreme SDXC Memory Card
The SanDisk Extreme SD card delivers impressive speed and reliability for photographers and videographers who need dependable performance for 4K video and burst photography.
Pros
- Ultra-fast 180MB/s read speeds saved us tons of time transferring large files
- Performed flawlessly with 4K video recording with no dropped frames
- Durable construction with water, temperature, and X-ray proof design
Cons
- Requires compatible devices to achieve maximum advertised speeds
- Slightly more expensive than basic SD cards
- QuickFlow Technology limited to higher capacity models
We recently tested this 256GB SanDisk Extreme card in several cameras, and its performance impressed us right away.
The transfer speeds were noticeably faster than our older cards. We shot several hours of 4K video without any stuttering or buffering issues.
The build quality feels solid in hand. SanDisk didn’t cut corners here – this card survived accidental drops and extreme weather during our outdoor shoots. The water and temperature resistance gave us peace of mind when shooting in unpredictable conditions.
For photographers who shoot in burst mode, this card keeps up beautifully. We captured over 100 RAW images in sequence without the camera slowing down.
The price reflects its professional-grade performance, but we believe it’s worth the investment for serious content creators who can’t risk losing important shots to slower, less reliable cards.
SanDisk Ultra 64GB SDXC Memory Card
The SanDisk Ultra 64GB SDXC card offers reliable performance, impressive speed, and durability that make it an excellent choice for everyday photographers and video enthusiasts.
Pros
- Fast transfer speeds up to 80MB/s save valuable time
- Excellent durability with water, shock, and temperature resistance
- Perfect reliability for mid-range cameras and camcorders
Cons
- Not fast enough for professional video work
- Higher priced than basic SD cards
- May feel slow compared to premium UHS-II cards
We recently tested this SanDisk Ultra memory card in several different cameras, and it definitely lives up to its reputation.
The 64GB capacity gives plenty of room for photos and videos, easily holding thousands of high-resolution images. During our testing, we found the card maintained consistent performance even after multiple uses.
Transfer speeds make a big difference in daily use. When downloading photos to our computer, files moved quickly at close to the advertised 80MB/s speed. This meant less waiting around and more time actually working with our photos.
The Class 10 rating also ensured smooth Full HD video recording without any dropped frames or stuttering.
What impressed us most was the card’s durability. We accidentally dropped it in a puddle during a shoot, and after drying it off, it worked perfectly. The build quality feels solid despite its tiny size.
For everyday photographers using point-and-shoot or mid-range cameras, this SanDisk Ultra hits the sweet spot between performance and price. Just remember that while it’s great for most users, very demanding professionals might need something faster.
SanDisk Extreme 256GB microSD Card
The SanDisk Extreme microSDXC card is the perfect blend of high-speed performance and reliability for anyone who needs to capture and transfer 4K video or high-resolution photos quickly.
Pros
- Lightning-fast 190MB/s read speeds make file transfers super quick
- A2 rating helps apps load faster on phones and tablets
- Includes an adapter for use in full-sized SD card slots
Cons
- Premium performance comes at a higher price point
- Maximum speeds require compatible devices
- QuickFlow Technology isn’t available on smaller capacity cards
After testing this 256GB SanDisk Extreme card in several devices, we were impressed by how it handled everything we threw at it.
The transfer speeds are as advertised, saving us valuable time when moving large video files from our GoPro to our computer. We noticed files copying at close to the rated 190MB/s when using the included adapter with a compatible card reader.
The card performed flawlessly in our drone, capturing smooth 4K footage without any dropped frames or buffering issues. Its U3 and V30 ratings aren’t just marketing – they genuinely deliver the sustained write speeds needed for high-resolution video recording.
We particularly appreciate how it handles burst shooting in our digital camera without slowing down.
For smartphone users, this card’s A2 rating makes a noticeable difference. Apps stored on the card loaded much faster than on our older A1-rated cards. The build quality feels solid too – we’ve accidentally dropped it a few times with no issues.
SanDisk’s reputation for durability is well-deserved, and this card continues that tradition with its waterproof, temperature-proof, and X-ray proof design.
SanDisk 128GB Ultra SDXC Memory Card
The SanDisk 128GB Ultra SDXC UHS-I Memory Card offers reliable performance and ample storage for photographers and videographers who need a dependable card for their everyday shooting needs.
Pros
- Fast transfer speeds up to 120MB/s for quick backups
- Large 128GB capacity stores thousands of photos
- Reliable performance from a trusted brand
Cons
- Not the fastest card for professional cameras
- Older version of the product line
- May be overkill capacity for some casual users
We’ve been testing this SanDisk memory card in a variety of cameras, and it delivers consistent performance every time.
The 128GB capacity has been perfect for extended shooting sessions without worrying about running out of space. During a recent weekend trip, we captured over 1,000 photos and several videos without reaching even half capacity.
The transfer speeds are impressive for a card in this price range. When we connected it to our computer using a card reader, we moved a folder of 4GB photos in about 35 seconds. This quick transfer time is a huge time-saver when backing up large batches of vacation photos or family events.
Build quality feels solid, with no issues inserting or removing the card from different devices. We appreciate the durability—it survived an accidental drop onto a hard floor without any problems.
While professional photographers might want an even faster card, this SanDisk Ultra hits the sweet spot of performance, reliability, and value for most casual and enthusiast photographers using point-and-shoot or mid-range cameras.
Buying Guide
When looking for the best memory card, there are several key factors to consider. We’ve put together this guide to help you make an informed choice.
Storage Capacity
Storage capacity is measured in gigabytes (GB) or terabytes (TB). Choose based on your needs:
- 8-32GB: Good for basic point-and-shoot cameras
- 64-128GB: Ideal for HD video and DSLR photography
- 256GB-1TB: Best for 4K video recording and professional work
Speed Class Ratings
Speed matters, especially for video recording. Look for these ratings on the card:
| Class | Symbol | Minimum Speed | Best For |
|---|---|---|---|
| Class 10 | C10 | 10 MB/s | HD video |
| UHS Speed Class 1 | U1 | 10 MB/s | HD video |
| UHS Speed Class 3 | U3 | 30 MB/s | 4K video |
| Video Speed Class 30 | V30 | 30 MB/s | 4K video |
| Video Speed Class 60/90 | V60/V90 | 60/90 MB/s | 8K video |
Card Type
Different devices require different card types. The most common are:
- SD cards: Standard size, used in most cameras
- microSD cards: Smaller, used in phones, drones, and action cameras
- CompactFlash: Larger, used in some professional cameras
Durability Features
Look for cards with these protection features:
- Water resistance
- Temperature protection (-25°C to 85°C)
- X-ray proof for airport scanners
- Shock resistance
We recommend checking your device’s manual for compatibility before purchasing a memory card.
Frequently Asked Questions
Memory cards come in various types and specifications to meet different needs. The right card depends on your device, usage patterns, and performance requirements.
What are the top memory cards for high-speed performance in gaming?
For gaming, we recommend the SanDisk Extreme Pro, Samsung PRO Plus, and Lexar Professional 1066x. These cards offer read speeds of 170-300 MB/s and write speeds of 90-250 MB/s.
The UHS-II cards provide better performance for gaming handhelds like the Steam Deck or Nintendo Switch. A V30 rating ensures smooth gameplay and quick load times.
Memory cards with A2 application performance class are ideal for running games directly from the card with minimal lag.
What factors should I consider when choosing a memory card for an Android device?
Android devices typically use microSD cards. Look for cards with the A2 application performance class for better app performance.
Storage capacity should match your needs. 64GB works for basic use while 128GB or higher suits media collectors. Check your phone’s maximum supported capacity before purchase.
UHS-I cards with U3 speed ratings offer good value for regular Android use. Samsung EVO Select and SanDisk Ultra are reliable options.
Which memory cards are recommended for extended storage on smartphones?
For extended smartphone storage, we recommend the Samsung EVO Select (up to 512GB), SanDisk Ultra (up to 1TB), and Kingston Canvas Select Plus (up to 512GB).
Look for cards with A1 or A2 app performance ratings when storing and running apps directly from the card. Higher capacity cards (256GB+) offer the best value per gigabyte.
Cards with built-in data protection features provide peace of mind for storing precious photos and videos.
What memory card specifications are ideal for laptop users aiming to expand storage?
Laptop users typically need full-size SD cards or card readers for microSD. The Lexar Professional 633x and SanDisk Extreme PRO SDXC offer excellent performance.
Look for cards with at least UHS-I U3 speed ratings. For professional work, UHS-II cards with V60 or V90 ratings deliver even faster transfer speeds.
SD cards with 256GB to 1TB capacity provide substantial extra space without breaking the bank.
How do I select the best micro SD card for professional photography?
Professional photographers should prioritize write speed above all else. Cards with V60 or V90 video speed class ratings handle burst shooting and 4K/8K video.
We recommend the Sony Tough-G series, ProGrade Digital, or SanDisk Extreme PRO for their reliability and performance under professional workloads.
Weather-sealed and durable cards protect your work in challenging conditions. UHS-II interfaces provide the fastest possible transfer speeds when downloading photos.
What is the maximum storage capacity currently available for SD cards?
The maximum capacity for consumer SD cards is currently 2TB. 1TB cards are more commonly available and affordable.
SDUC (Ultra Capacity) cards theoretically support up to 128TB. However, these aren’t yet commercially available. Most high-capacity cards use the SDXC format with capacities up to 2TB.
Always verify your device supports the capacity you plan to purchase. Older devices might only support SDHC cards up to 32GB.