SanDisk 64GB Ultra SDXC card up to 140 MB/s with A1 App
SanDisk 64GB Ultra SDXC card up to 140 MB/s with A1 App Performance UHS-I Class 10 U1 (Pack of 2)
Don’t Miss the Moment
SanDisk Ultra SD cards are fast with exceptional video recording performance to let you capture the memories that matter.
Keep Shooting
Delivers plenty of storage so you can shoot tons of photos and hours of Full HD video(3) (1080p) without changing the card.
More Time, More Memories
Save time with ultra-fast speeds to help you quickly move your photos and Full HD videos(3).
Built for Durability
SanDisk Ultra SDHC and SDXC UHS-I cards are durability tested, waterproof, shockproof, x-ray proof, and temperature-proof(4) to help protect your memories from life’s mishaps.
 |  |  | |
|---|---|---|---|
| Read Speeds(6) | Up to 150MB/s [256GB-512GB] | Up to 180MB/s [128GB-512GB] | Up to 200MB/s [64GB-1TB] |
| Write Speeds(6 | Up to 130MB/s [256GB-512GB] | Up to 140MB/s [256GB-1TB] | |
| Video Quality(3) | Full HD | 4K UHD video | 4K UHD video |
| Speed Class | C10, U1 [32GB-512GB] | C10, V30, and U3 | C10, V30, and U3 |
| Durability(4) | Temperature-proof, waterproof, shockproof, and X-ray proof | Temperature-proof, waterproof, shockproof, and X-ray proof | Temperature-proof, waterproof, shockproof, and X-ray proof |
Legal Disclaimers
Not all devices support SDXC memory card formats. Check with your device manufacturer for more details.
(1) Speeds vary by capacity. [256GB-512GB]: Up to 150MB/s read speed engineered with proprietary technology to reach speeds beyond UHS-I 104MB/s, requires compatible devices capable of reaching such speeds. Write speed lower. [64GB-128GB]: Up to 140MB/s read speed engineered with proprietary technology to reach speeds beyond UHS-I 104MB/s, requires compatible devices capable of reaching such speeds. Write speed lower. [32GB]: Up to 120MB/s read speed engineered with proprietary technology to reach speeds beyond UHS-I 104MB/s, requires compatible devices capable of reaching such speeds. Write speed lower. [16GB]: Up to 80MB/s read speed; write speed lower. Based on internal testing; performance may be lower depending on host device, usage conditions, and other factors. 1MB=1,000,000 bytes.
(2) 1GB=1,000,000,000 bytes. Actual user storage less.
(3) Full HD (1920×1080) and 4K UHD (3840×2160) video support may vary based upon host device, file attributes, and other factors. Visit the SanDisk Video Knowledge Base for more information.
(4) Card only. See product packaging and the official SanDisk website for additional information and limitations.
(5) UHS Speed Class 1 (U1) designates a performance option designed to support real time video recording with UHS enabled host devices. See Consumers Speed page on SanDisk site.
(6) Speeds vary by product and capacity. For SanDisk Ultra SD UHS-I Card [256GB-512GB]: Up to 150MB/s read speed engineered with proprietary technology to reach speeds beyond UHS-I 104MB/s, requires compatible devices capable of reaching such speeds. Write speed lower. SanDisk Extreme SD UHS-I Card [256GB-512GB]: Up to 180 MB/s read speed. Engineered with proprietary technology to reach speeds beyond UHS-I 104MB/s, require compatible devices capable of reaching such speeds. Write speed up to 130 MB/s. SanDisk Extreme SD UHS-I Card [128GB]: Up to 180 MB/s read speed. Engineered with proprietary technology to reach speeds beyond UHS-I 104MB/s, require compatible devices capable of reaching such speeds. Write speed up to 90 MB/s. SanDisk Extreme PRO SD UHS-I Card [256GB-1TB]: Up to 200MB/s read speeds, engineered with proprietary technology to reach speeds beyond UHS-I 104MB/s, require compatible devices capable of reaching such speeds. Write speed up to 140MB/s. SanDisk Extreme PRO SD UHS-I Card [64GB-128GB]:Up to 200MB/s read speed. Write speed up to 90MB/s. Based on internal testing; performance may be lower depending on host device, interface, usage conditions and other factors. 1MB=1,000,000 bytes.
SanDisk, the SanDisk logo, SanDisk Extreme, SanDisk Extreme PRO, and SanDisk Ultra are registered marks or marks of Western Digital Corporation or its affiliates in the US and/or other countries. The SDHC and SDXC marks and logos are marks of SD-3C, LLC. All other marks are the property of their respective owners. Product specifications subject to change without notice. Pictures shown may vary from actual products.
2022 Western Digital Corporation or its affiliates. All rights reserved. Western Digital Technologies, Inc. is the seller of record and licensee in the Americas of SanDisk products.
| Weight: | 4.54 g |
| Dimensions: | 3.2 x 2.39 x 0.22 cm; 4.54 Grams |
| Brand: | SanDisk |
| Model: | SDSDUNB-064G-GN6IN |
| Colour: | Black |
| Batteries Included: | No |
| Manufacture: | Sandisk |
| Dimensions: | 3.2 x 2.39 x 0.22 cm; 4.54 Grams |
Exactly what I needed, all local shops and electronic stores did not have this size memory card and it was getting frustrating to look locally and finding nothing. But here amazon had option of sizes and I could get the memory card the next day and problem was over.
The SanDisk 64GB Ultra SDXC Card has proven to be a game-changer in the world of storage, offering both speed and ample capacity for capturing life’s moments with ease.
What sets this SDXC card apart is its impressive speed capabilities, boasting up to 140 MB/s read speed. Whether you’re a photographer, videographer, or simply looking to enhance your device’s storage, the SanDisk Ultra delivers on the promise of swift data transfer.
The A1 App Performance and UHS-I Class 10 rating ensure seamless application performance and smooth Full HD video recording. This versatility makes it an ideal companion for a range of devices, from cameras and drones to smartphones and tablets.
The generous 64GB capacity provides ample space for storing high-resolution photos, videos, and various multimedia files. It strikes the right balance between capacity and convenience, allowing users to focus on capturing moments without the constant worry of running out of storage.
Durability is another standout feature, with the card being waterproof, temperature-proof, and shockproof. This robust design ensures that your precious data remains safe in various environmental conditions.
In summary, the SanDisk 64GB Ultra SDXC Card deserves a solid 5-star rating for its impressive speed, generous capacity, and reliability. If you’re seeking a storage solution that keeps up with your creative pursuits, this SanDisk Ultra card is a must-have. Highly recommended for anyone in need of fast and reliable storage for their devices!
Firstly, the storage capacity of 64GB is perfect for my needs. It provides ample space to store a large number of photos, videos, and other files without worrying about running out of storage. Whether I’m capturing high-resolution images or recording lengthy videos, this SDXC card has enough room to accommodate my needs.
The transfer speed of up to 140 MB/s is impressive. It allows for quick and efficient file transfers, saving me valuable time. Whether I’m transferring files to my computer or another device, the high-speed performance of this SDXC card ensures a smooth and seamless experience.
The A1 app performance of this card is another standout feature. It is optimized for faster app loading and smoother app performance on compatible devices. This is particularly useful for running apps directly from the SDXC card, such as gaming or multimedia apps, without any lag or slowdown.
The UHS-I Class 10 U1 rating ensures reliable performance and compatibility with a wide range of devices. I have used this SDXC card with various cameras, camcorders, and other devices, and it has consistently delivered excellent results.
Furthermore, the SanDisk brand is known for its quality and reliability. I trust the brand’s reputation for producing durable and long-lasting memory cards, and this SDXC card is no exception. It feels sturdy and well-built, assuring me of its durability and ability to withstand everyday use.
In conclusion, the SanDisk 64GB Ultra SDXC card is an excellent choice for anyone in need of reliable and high-performance storage for their photos, videos, and other files. With its ample storage capacity, fast transfer speed, A1 app performance, and trusted brand reputation, this SDXC card has exceeded my expectations. I highly recommend it for its reliability and value for money.
However, don’t rely on the stated speed. As their fine print says, that is only if you use their proprietary card reader (“proprietary technology”). But my camera will only use the standard UHS-I interface, which has a maximum theoretical speed of 104MB/s (according to their literature). But that is not what you will get. That is only the theoretical top speed of the standard.
Using a little utility called H2TestW.exe to measure my card’s performance on my Windows 10 machine (128GB 140MB/s using a generic USB 3.0 card reader), the read speed I got was 72.8MB/s and, more importantly, the write speed I got was only 30.9MB/s. Not 140MB/s. This is far from the advertised speed, but it is sufficient for my purposes of storage of my photos when I am on holiday, so I am happy with it.
I ran similar tests using my Nikon D610 camera and got similar results. What I did was to place the card in my camera and set the camera to continuous high speed shooting rate, which can do 6 frames per second. I turned image review off so it wouldn’t interfere with the results. I then pressed the shutter release button and started a timer when the green light (card access light) came on. The camera soon filled its internal cache memory and the frame rate dropped to a crawl. I kept the shutter button pressed and kept on timing it. When about 30 seconds had elapsed, I released the shutter release button. When the green light finally went out, indicating all images had been written to the card, I stopped the timer. That took 41 secs. I then connected the card to the computer and there were 50 photos (RAW) with a combined size of 1120 MB. So, doing the maths, 1120 MB / 41 secs = 27.31MB/s.
So that is consistent with the results of the first test. Not the 140MB/s advertised, but to be fair, none of the cards I’ve got do what they advertise. Funny enough, I have another older 128GB Ultra card with an advertised speed of only 80MB/s which actually reads and writes at about 60MB/s! So these older 128GB Ultra cards are significantly faster the their latest versions – almost twice faster!
If you need speed, of all the cards I have, the SanDisk Extreme PRO 64GB 170MB/s cards are the fastest I tested, and they read and write at just over 70MB/s. However, those cards are more expensive. I use them for initially capturing of my images (day shooting) and then transfer them to my bigger, cheaper cards in the evening, when I get back to the hotel room. I then clear those ‘day cards’ for the next day’s shooting. This system works well with my Nikon D610 camera which has dual card slots and allows me to copy the images from one card to another. It also gives me redundancy (copy all images to two separate storage cards) in case of any one card failure.
So the speed of these cards is not as important to me, but I just accidentally discovered these two different ways to measure the speed of cards, and was surprised just how much slower the cards are to the advertised speed, which is all over the front of the cards. Presumably all their competitors are doing similar things.
Overall though, I am happy with SanDisk, so I am happy with my new cards. But one star off for this lack of speed. I hope you found this review helpful.