Silicon Power Elite 256GB microSDXC — Class 10, U1, A1, with SD Adapter
256GB microSDXCClass 10 · U1 · V10 · A1Up to 100 MB/s readSD adapter in the box
The Silicon Power Elite SP256GBSTXBV1V20SP is a 256GB microSDXC card rated Class 10, UHS-I U1, Video Speed Class V10 and Application Performance Class A1, supplied with a full-size SD adapter. Silicon Power publishes up to 100 MB/s read and 10 MB/s write for this card, which places it squarely as a capacity card: somewhere to keep photos, music, documents and Full HD video on a phone, tablet or older camera without paying for speed you will not use. The A1 rating covers a minimum of 1,500 random-read and 500 random-write IOPS with at least 10 MB/s sustained, so apps stored on it will load, and automatic ECC error correction runs in the background.
Compatibility — check before buying:
The number to look at on this card is the 10 MB/s write speed. That is enough for Full HD 1080p recording, phone photos and general storage, and it is not enough for 4K video or for continuous RAW bursts — 4K is specified against U3 or V30, which guarantee 30 MB/s. Some cameras and drones will refuse to record 4K on a U1 card at all. If 4K is what you are buying for, Silicon Power’s CreatePro CR30M at the same 256GB writes at 150 MB/s and is the card you actually want; the two look nearly identical on a shelf. This card is microSDXC, so it needs an SDXC-capable host, and the full-size SD adapter is included in this pack. Finally, Silicon Power’s memory-card warranty excludes dashcams, security and surveillance cameras, digital signage players and other continuous-recording devices, so this is not the card for those. Tell us the device and we will confirm what it needs.
Best For
✓ Phone and tablet storage for photos, music and documents
✓ Full HD 1080p video on a phone or an older camera
✓ Keeping apps and offline maps on an Android device
✓ A large, inexpensive capacity card rather than a fast one
✓ Anyone who also needs a full-size SD adapter in the pack
✓ Backing up a photo library away from the phone
Key Features
256GB of everyday headroom
At this capacity you can carry a phone photo library, an offline music collection and a stack of Full HD clips without thinking about it. Silicon Power’s own arithmetic for this line puts the 512GB at around 75,000 photos or 39 hours of Full HD, so 256GB is roughly half of that.
A1 rated for apps
A1 guarantees a minimum of 1,500 random-read and 500 random-write IOPS along with 10 MB/s sustained sequential speed. That is the standard Android uses to decide whether apps can live on the card rather than only media files.
SD adapter included
The pack ships with a full-size SD adapter, so the same card drops into a laptop or camera SD slot as well as a phone or tablet. Silicon Power describes the Elite line as waterproof, temperature-proof and X-ray-proof; no IP rating is published, so treat it as resilient rather than submersible.
Technical Specifications
| Identification |
| Brand |
Silicon Power |
| Series |
Elite microSDHC/SDXC UHS-I |
| Part Number |
SP256GBSTXBV1V20SP |
| EAN / GTIN |
4713436128663 |
| MPN |
SP256GBSTXBV1V20SP |
| Card & Format |
| Card Type |
microSDXC — exFAT, needs an SDXC-capable host |
| Form Factor |
microSD, with full-size SD adapter included |
| Capacity |
256GB |
| Bus Interface |
UHS-I |
| Speed & Class |
| Maximum Read |
100 MB/s |
| Maximum Write |
10 MB/s — Full HD level, below the 30 MB/s that 4K recording is specified against |
| Speed Class |
Class 10 |
| UHS Speed Class |
U1 — 10 MB/s minimum sustained write |
| Video Speed Class |
V10 — rated by Silicon Power for Full HD 1080p recording |
| Application Performance Class |
A1 — minimum 1,500 random-read and 500 random-write IOPS |
| Physical & Environmental |
| Dimensions |
15 x 11 x 1 mm |
| Weight |
0.3 g |
| Insertion Cycles |
10,000 minimum |
| Operating Temperature |
0°C to 70°C |
| Storage Temperature |
-40°C to 85°C |
| Operating Voltage |
2.7 V to 3.6 V |
| Humidity |
8% to 95% |
| Durability & Data Integrity |
| Manufacturer Claims |
Waterproof, temperature-proof and X-ray-proof, in Silicon Power’s own wording |
| IP Rating |
None stated — do not treat it as submersible |
| Error Correction |
Automatic ECC |
| Package & Warranty |
| In the Box |
Card plus full-size SD adapter |
| Warranty |
1-Year Warranty (Singular) |
| Manufacturer Term |
Silicon Power publishes a 5-year limited warranty for its SD and microSD memory cards including the Elite series, and that policy excludes video conferencing and security monitoring devices, car cam recorders, digital signage players, continuous data recording devices and network surveillance cameras. Singular’s direct warranty is 1 year; beyond that we assist you with the manufacturer’s warranty process for its full duration. |
Frequently Asked Questions
Can I record 4K video on this card?
Not reliably. Silicon Power publishes a 10 MB/s write speed and the card carries U1 and V10 marks, which are the Full HD level. 4K recording is normally specified against U3 or V30, meaning 30 MB/s sustained, and many cameras and drones will not even offer 4K when a U1 card is fitted. For 4K, choose the CreatePro CR30M or another U3 / V30 card.
Does the SD adapter come with it?
Yes. This pack includes a full-size SD adapter, so the card works in a laptop or camera SD slot as well as in a phone or tablet microSD slot. You do not need to buy an adapter separately.
What is the difference between this and the CreatePro CR30M 256GB?
Both are 256GB Silicon Power microSDXC cards supplied with an adapter, and on a shelf they look interchangeable. The difference is write speed: this Elite card writes at 10 MB/s and is rated U1 and V10, while the CR30M writes at up to 150 MB/s and is rated U3, V30 and A2. For photos, music and Full HD the Elite is the sensible buy. For 4K video, burst shooting or running games from the card, the CR30M is the one to take.
Singular Expert Insight
This is a capacity card, and judged as one it does its job: 256GB of storage for a phone, tablet or older camera, with an adapter in the box and a 5-year manufacturer term behind it. The mistake to avoid is buying it as a performance card, because the shelf description is almost word for word the same as Silicon Power’s much faster CreatePro CR30M at the same capacity — and the gap between them is 10 MB/s of write against 150. If what you do is store photos, keep music offline and shoot the occasional Full HD clip, that gap costs you nothing and you should keep the money. If you record 4K, shoot RAW bursts or run games from the card, it costs you the recording. Worth noting too that Silicon Power publishes no endurance rating for this line and its warranty terms exclude dashcams and surveillance cameras, so a card that spends its life being overwritten needs a high-endurance model instead. Browse our other
SD and microSD cards, or add a
card reader if you offload from a machine without a slot.
Buyer’s Guide
Buy it if
You want a large, inexpensive 256GB card for a phone, tablet or older camera. What you store is photos, music, documents and Full HD video rather than 4K. You want the A1 rating so apps can live on the card. You also need a full-size SD adapter and would rather not buy one separately.
Skip it if
You record 4K video or shoot RAW bursts — 10 MB/s of write is not enough and you need a U3 / V30 card. You are buying for a dashcam or a security camera, a use Silicon Power’s warranty excludes. You want fast game or app loading on a handheld console, which needs A2 and real write speed. Your device takes full-size SD only and you would rather not use an adapter.
Also consider
The CreatePro CR30M 256GB if speed matters — U3, V30, A2 and 150 MB/s write for the same capacity. A high-endurance card if the job is continuous recording. A smaller Elite card if 256GB is more than you need. A full-size SD card if the device you are feeding has a standard SD slot.