Transcend TS256GSDC300S 256GB 300S SDXC Card - Class 10/UHS-I - U3 - 95 MB/s Read - 45 MB/s Write
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Product Features
Technical Overview
This Transcend SDXC card features a 256GB storage capacity with maximum sequential read speeds of 95 MB/s and write speeds of 45 MB/s. The Class 10/UHS-I (U3) speed rating ensures minimum sustained write performance of 30 MB/s, making it suitable for recording high-bitrate video content without dropped frames or performance degradation.
The card utilizes the SDXC (Secure Digital Extended Capacity) format, which supports storage capacities between 32GB and 2TB using the exFAT file system. This enables compatibility with modern devices that require larger storage volumes while maintaining backward compatibility with SDHC host devices through appropriate formatting.
Relevant factors for this section include Storage Capacity, Maximum Read Speed, Maximum Write Speed, Width. When those points are considered together, they give buyers a clearer picture of how the product is equipped, how it fits into deployment, and what kind of day-to-day role it is meant to support.
Key Product Advantages
The Transcend 300S SDXC card delivers several practical advantages for users requiring reliable mobile storage. The combination of substantial capacity and consistent performance makes it particularly valuable for content creators, mobile professionals, and enthusiasts working with high-resolution media.
HD Video Recording Capability
With UHS Speed Class 3 (U3) certification, this card maintains the minimum 30 MB/s write speed required for 4K UHD video recording at standard frame rates, ensuring smooth capture without buffer issues.
- Supports 1080p Full HD recording
- Maintains consistent write performance
- Prevents recording interruptions
Mobile Application Performance
The 95 MB/s read speed accelerates application loading times and file access on compatible devices, reducing wait times when working with large media files or data-intensive applications.
- Faster app loading
- Quick file browsing
- Reduced transfer times
Deployment / Use Cases
This Transcend SDXC card serves multiple deployment scenarios where reliable, high-capacity removable storage is essential. Its performance characteristics make it particularly suitable for devices that demand consistent data throughput alongside substantial storage capacity.
Primary use cases include digital photography with high-resolution cameras, mobile computing with tablets and ultraportable devices, and multimedia recording with action cameras and drones. The card's compact dimensions and lightweight construction make it ideal for mobile deployment where space and weight are considerations.
Professional Photography
The 256GB capacity accommodates thousands of high-resolution RAW images, while the U3 speed rating ensures rapid burst shooting without buffer limitations during continuous capture sessions.
Mobile Computing Expansion
For tablets, handheld gaming devices, and portable media players, this card provides substantial additional storage for applications, games, and media libraries without compromising device portability.
Physical Profile
Measuring 0.94" (24 mm) wide by 1.26" (32 mm) long with a thickness of 82.68 mil (2.10 mm), this SDXC card maintains the standard SD form factor for universal compatibility with card slots and readers. The approximate weight of 2 grams ensures minimal impact on portable device weight while providing robust construction for everyday handling.
The physical profile is practical for deployment planning because the dimensions and weight are clearly defined: 0.94" (24 mm), 2 g. This helps confirm rack, shelf, desk, or cabinet fit before installation.
- Width
- 0.94" (24 mm)
- Weight
- 2 g
- Length
- 1.26" (32 mm)
Highlights
- 256GB storage capacity for extensive media libraries and application data
- Class 10/UHS-I (U3) speed rating ensures minimum 30 MB/s write performance
- 95 MB/s maximum read speed for fast file access and application loading
- 45 MB/s maximum write speed supports continuous HD video recording
- SDXC format with exFAT file system for capacities up to 2TB
- 300S series platform delivers consistent performance across operations
- Compact dimensions (0.94" x 1.26") fit standard SD card slots
- Lightweight 2-gram construction for portable deployment
Specifications
| Specifications | |
|---|---|
| Manufacturer | Transcend Information, Inc |
| Manufacturer Part Number | TS256GSDC300S |
| Brand Name | Transcend |
| Product Series | 300S |
| Product Name | 256GB 300S SDXC Card |
| Product Type | SDXC |
| Technical Information | |
| Storage Capacity | 256 GB |
| Maximum Read Speed | 95 MB/s |
| Maximum Write Speed | 45 MB/s |
| Speed Class Rating | Class 10/UHS-I (U3) |
| Physical Characteristics | |
| Width | 0.94" (24 mm) |
| Thickness | 82.68 mil (2.10 mm) |
| Length | 1.26" (32 mm) |
| Weight (Approximate) | 2 g |
FAQ
What devices are compatible with this Transcend SDXC card?
This Transcend TS256GSDC300S SDXC card is compatible with any device that supports the SDXC format, including digital cameras, camcorders, tablets, laptops, and other host devices with SD card slots. The card uses the exFAT file system, which is natively supported by modern Windows and macOS systems, and many Android devices. For devices that only support SDHC format, the card may require reformatting to FAT32 with appropriate capacity limitations.
What is the difference between Class 10 and UHS-I U3 speed ratings?
Class 10 indicates a minimum sustained write speed of 10 MB/s, while UHS-I U3 (UHS Speed Class 3) specifies a minimum sustained write speed of 30 MB/s. This Transcend card carries both ratings, with the U3 classification being the more demanding standard. The U3 rating is particularly important for recording high-resolution video, as it ensures the card can maintain the data throughput needed for 4K UHD and high-bitrate 1080p video without dropped frames or recording interruptions.
Can this card handle 4K video recording?
Yes, the Transcend TS256GSDC300S SDXC card with its UHS Speed Class 3 (U3) rating provides the minimum 30 MB/s sustained write performance required for 4K UHD video recording at standard frame rates. The 45 MB/s maximum write speed offers additional headroom for higher bitrate recording. For optimal 4K performance, ensure your recording device supports UHS-I interface and is configured to use the card's full capabilities.
How does the 95 MB/s read speed benefit everyday use?
The 95 MB/s maximum read speed significantly reduces file transfer times and application loading delays when accessing content stored on the card. This translates to faster photo review in cameras, quicker media playback on devices, reduced wait times when transferring files to computers, and smoother performance when running applications directly from the card. The improved read performance is particularly noticeable when working with large files like high-resolution images or video footage.
What is the practical advantage of the 256GB capacity?
The 256GB storage capacity provides substantial space for approximately 64,000 high-quality JPEG photos, 16 hours of 1080p video at standard bitrates, or thousands of music files and applications. This extensive capacity reduces the frequency of card swaps during extended shooting sessions or travel, minimizes the need to delete files to free up space, and allows for comprehensive media libraries to be carried on a single removable storage device.
How does the SDXC format differ from SDHC?
SDXC (Secure Digital Extended Capacity) cards support capacities between 32GB and 2TB using the exFAT file system, while SDHC (Secure Digital High Capacity) cards support 4GB to 32GB using the FAT32 file system. The Transcend TS256GSDC300S uses the SDXC format, which enables its 256GB capacity. SDXC cards are backward compatible with SDHC host devices when formatted appropriately, though some older devices may require firmware updates or may not support capacities above 32GB.
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