SD Card
User Benchmarks
| Model | Type | Score | Seq. Read MB | Seq. Write MB | Read 4k64QD | Write 4k64QD | Read Access msek. | Write Access msek. |
| SD Card | 63 | 69 | 41 | 14 | 4.47 | 0.17 | 0.95 | 3.35 |
| SD Card | 127 | 66 | 28 | 22 | 2.04 | 0.44 | 1.74 | 11.44 |
| SD Card | 126 | 65 | 43 | 5 | 5.60 | 0.51 | 0.71 | 3.08 |
| SD Card | 63 | 61 | 22 | 21 | 7.78 | 1.86 | 0.56 | 1.27 |
| SD Card | 63 | 56 | 22 | 15 | 7.62 | 2.98 | 0.58 | 1.39 |
| SD Card | 32 | 55 | 23 | 18 | 5.81 | 1.87 | 0.70 | 2.01 |
| SD Card | 16 | 53 | 22 | 20 | 5.76 | 0.60 | 0.74 | 2.58 |
| SD Card | 16 | 49 | 20 | 19 | 3.91 | 0.64 | 0.95 | 2.48 |
| SD Card | 8 | 47 | 20 | 15 | 4.37 | 1.64 | 0.93 | 2.47 |
| SD Card | 63 | 46 | 18 | 17 | 2.59 | 0.11 | 1.46 | 38.13 |
| SD Card | 537 | 45 | 18 | 17 | 5.70 | 0.01 | 0.71 | 1059.77 |
| SD Card | 537 | 45 | 18 | 17 | 5.70 | 0.00 | ||
| SD Card | 32 | 45 | 19 | 17 | 3.18 | 1.28 | 1.11 | 3.57 |
| SD Card | 32 | 45 | 18 | 16 | 3.53 | 1.83 | 1.11 | 2.46 |
| SD Card | 32 | 45 | 19 | 16 | 3.12 | 1.48 | 1.17 | 4.32 |
| SD Card | 0 | 44 | 21 | 13 | 2.51 | 0.58 | 1.50 | 12.50 |
| SD Card | 64 | 44 | 22 | 11 | 3.91 | 0.78 | 0.94 | 5.90 |
| SD Card | 16 | 43 | 21 | 13 | 4.39 | 0.50 | 0.81 | 3.01 |
| SD Card | 32 | 42 | 17 | 16 | 2.81 | 2.07 | 1.49 | 2.12 |
| SD Card | 32 | 42 | 17 | 16 | 2.81 | 2.07 | 1.49 | 2.12 |
| SD Card | 16 | 41 | 22 | 7 | 4.72 | 1.54 | 0.83 | 5.56 |
| SD Card | 16 | 41 | 21 | 12 | 4.64 | 1.33 | 0.75 | 3.04 |
| SD Card | 2 | 39 | 20 | 7 | 7.20 | 0.03 | 0.59 | 159.17 |
| SD Card | 16 | 39 | 18 | 12 | 3.53 | 1.23 | 1.21 | 3.72 |
| SD Card | 134 | 39 | 14 | 12 | 2.30 | 3.48 | 2.12 | 1.69 |
| SD Card | 16 | 38 | 17 | 13 | 4.22 | 0.01 | 0.96 | 762.90 |
| SD Card | 16 | 38 | 22 | 6 | 3.31 | 1.14 | 1.20 | 2.71 |
| SD Card | 16 | 37 | 20 | 7 | 3.96 | 1.13 | 1.05 | 3.67 |
| SD Card | 8 | 37 | 21 | 7 | 4.65 | 1.36 | 0.70 | 2.89 |
| SD Card | 2 | 36 | 20 | 7 | 2.79 | 0.77 | 1.84 | 4.88 |
| SD Card | 16 | 34 | 20 | 6 | 2.29 | 0.48 | 1.83 | 8.65 |
| SD Card | 63 | 33 | 18 | 7 | 3.47 | 0.75 | 1.26 | 4.80 |
| SD Card | 8 | 33 | 18 | 5 | 3.31 | 0.98 | 1.14 | 3.43 |
| SD Card | 16 | 29 | 19 | 10 | 0.00 | 0.00 | ||
| SD Card | 67 | 29 | 18 | 2 | 4.21 | 0.01 | 1.00 | 340.23 |
| SD Card | 8 | 29 | 16 | 7 | 2.04 | 0.01 | 2.10 | 328.71 |
| SD Card | 34 | 29 | 16 | 5 | 2.54 | 0.05 | 1.84 | 103.90 |
| SD Card | 8 | 28 | 16 | 6 | 2.07 | 0.01 | 2.10 | 874.84 |
| SD Card | 2 | 26 | 14 | 5 | 2.79 | 0.01 | 1.53 | 416.77 |
| SD Card | 134 | 25 | 16 | 1 | 3.98 | 0.01 | ||
| SD Card | 65 | 23 | 11 | 5 | 4.82 | 0.10 | 0.84 | 46.86 |
| SD Card | 15 | 21 | 11 | 5 | 3.39 | 0.35 | 1.64 | 4.83 |
| SD Card | 67 | 21 | 12 | 2 | 3.28 | 0.01 | 1.23 | 752.66 |
| SD Card | 1 | 18 | 10 | 2 | 3.09 | 0.02 | 1.39 | 278.83 |
| SD Card | 1 | 17 | 9 | 3 | 2.32 | 0.02 | 1.84 | 200.55 |
| SD Card | 4 | 0 | 0 | 0 | 0.00 | 0.00 | ||
| SD Card | 2 | 0 | 0 | 0 | 0.00 | 0.00 | ||
| SD Card | 2 | 0 | 0 | 0 | 0.00 | 0.00 | ||
| SD Card | 8 | 0 | 0 | 0 | 0.00 | 0.00 |
The measurement of the SD Card was carried out on Windows. Similar read and write speeds could certainly be achieved with the SD Card under Linux and MacOS. Of course, the correct hard drive driver should be installed and the correct interface for the SD Card should be used.
---
An SD ​​(Secure Digital) card is a widely used, compact and portable flash memory device, mainly used in digital cameras, smartphones, tablets and other portable devices. It provides a reliable way to store data such as photos, videos, music and documents. Over time, different types, sizes and speed classes of SD cards have evolved to meet different needs.
1. Technical details
SD cards are available in a variety of versions that vary in capacity, size and performance. The main technical details include:
- Capacities:
- SD ​​(Secure Digital): Up to 2 GB
- SDHC (Secure Digital High Capacity): 4 GB bis 32 GB
- SDXC (Secure Digital Extended Capacity): 64 GB bis 2 TB
- SDUC (Secure Digital Ultra Capacity): Up to 128 TB (very rare in stores)
- Formats/Sizes:
- Standard size (SD): 32 x 24 x 2.1 mm (commonly used in cameras)
- MiniSD: 21.5 x 20 x 1.4 mm (rarely used)
- microSD: 15 x 11 x 1 mm (commonly used in smartphones, tablets, drones and action cameras)
- Speed:
- Speed ​​Classes: SD cards are divided into classes according to their minimum write speeds:
- Class 2: 2 MB/s
- Class 4: 4 MB/s
- Class 6: 6 MB/s
- Class 10: 10 MB/s (often used for HD video recording)
- UHS (Ultra High Speed) speed classes: Offer higher speeds, especially for 4K video recording:
- UHS-I: Up to 104 MB/s
- UHS-II: Up to 312 MB/s (with additional contact strip for higher speed)
- UHS-III: Up to 624 MB/s
- Video Speed ​​Class: For 4K and 8K videos:
- V6 to V90: With minimum write speeds of 6 MB/s to 90 MB/s
- File system:
- SD ​​and SDHC: Usually formatted with FAT16 or FAT32
- SDXC: Uses exFAT file system to enable larger file sizes and capacities
- Bus interface:
- Default Speed: Up to 12.5 MB/s
- High Speed: Up to 25 MB/s
- UHS-I: Up to 104 MB/s
- UHS-II: Up to 312 MB/s
- UHS-III: Up to 624 MB/s
2. Functions
- Data transfer: SD cards are primarily used to store and transfer data. This includes photos, videos, music files, documents and applications.
- Various size options: Depending on the application, users can choose between standard SD, miniSD and microSD. Most modern devices support microSD cards, often with adapters for SD compatible devices.
- High storage capacity: The SDXC and SDUC formats can store enormous amounts of data, making them ideal for high-resolution photos and videos in 4K or 8K.
- Write-protect switch: Some standard format SD cards have a physical write-protect switch that prevents accidental deletion or overwriting of data.
- Compatibility: SD cards are compatible with a wide range of devices including digital cameras, action cameras, drones, smartphones, tablets, laptops and gaming consoles.
3. Areas of application
- Photography and Videography: SD cards are commonly used in digital cameras and camcorders to store high-resolution images and videos. SDHC and SDXC cards in particular, with higher capacities and speeds, are essential for recording HD, 4K and 8K videos.
- Smartphones and tablets: Many mobile devices support microSD cards to expand internal storage, which is especially useful for devices without large built-in storage.
- Drones and action cameras: SD cards, especially microSD cards, are often used in drones and action cameras to store videos and images in high resolutions. High write speeds and reliable performance are particularly important here.
- Data Transfer: They are also used as portable storage to transfer files between computers, laptops, smartphones and other devices.
- Security cameras and surveillance systems: Many surveillance cameras use SD cards to store video recordings locally, especially on devices that do not have a cloud connection.
- Gaming: Modern handheld consoles like the Nintendo Switch use microSD cards to store games and save games.
- Car navigation systems: Many cars use SD cards to store navigation data or multimedia content.
4. Advantages
- Compact Size: SD cards are very small and lightweight, making them extremely portable and easy to integrate into devices.
- Variety of capacities: SD cards come in a wide range of storage sizes, making them suitable for many different applications, from simple data storage to recording high-resolution video.
- Wide compatibility: SD cards are standard in many devices and therefore offer a universal storage solution.
- Fast data transfer (with UHS cards): UHS cards offer high write speeds, making them ideal for 4K or 8K video content.
- Long lifespan: SD cards are based on flash memory and therefore have no moving parts, making them more robust and durable.
5. Disadvantages
- Limited Write Cycles: Flash memory, such as that used in SD cards, has a limited number of write and erase cycles, meaning the card may slowly fail after heavy use.
- Vulnerability to Physical Damage: Although SD cards are durable, their small size and delicate contacts mean they can be damaged if handled improperly or in extreme conditions.
- Compatibility issues with older devices: Not all older devices support SDHC or SDXC cards, which may limit their use.
- Variable speed: With cheaper models or older SD cards, data transfer speeds can be significantly slower, which can be problematic, especially when recording videos.
6. Additional information
- Security features: Some SD cards support data encryption or offer software solutions to store data securely. This is especially important for business-critical data or sensitive information.
- Lifespan: High-quality SD cards are durable and resistant to water, extreme temperatures, X-rays and shock, making them a reliable choice for outdoor adventures, travel or industrial applications.
- Brands and Prices: The most popular brands include SanDisk, Kingston, Samsung, Lexar and Transcend. Prices vary depending on capacity, speed class and brand.
Summary
SD cards are versatile and convenient storage solutions used in a wide range of devices and applications. They offer high storage capacities, fast data transfers and compact sizes that make them ideal for storing and transporting data. While they are generally durable, they have a limited lifespan and choosing the right speed class and capacity depends greatly on specific needs, such as recording HD or 4K video, use in smartphones or storing gaming content.
---
SD Card and the compatible operating systems
Windows Server 2025, 2022, 2019, 2016, ... or 2008 and higher
Windows 12, 11, 10 or Windows 7 and higher
Linux (various distributions)
macOS (from version 10.6)
Please note that the exact functions and areas of application may vary depending on the firmware version and configuration of SD Card.
The SD Card is a reliable disk in case of problems, failures, file loss and other errors, check the drivers of the SD Card regardless of whether it is under Windows 12, 11, 10, etc. or Linux and Apples macOS.