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Sandisk Ultra SDXC 256GB UHS Class 10 Memory Card, Up to 150MB/s Read Speed

Sandisk Ultra SDXC 256GB UHS Class 10 Memory Card, Up to 150MB/s Read Speed - Main image
$45.87 $61.99 In stock

Category: SD Cards

SanDisk Ultra SDXC 256GB UHS Class 10 Memory Card, Up to 150MB/s Read Speed

Product Description:

The SanDisk 256GB Ultra SDXC UHS-I Card (SDSDUNC-256G-GN6IN) is a high-capacity, high-speed full-size SD card built for photographers, videographers, and content creators who need generous storage and fast transfers without paying premium prices. With 256GB of space and read speeds up to 150MB/s — engineered with SanDisk's proprietary technology to push beyond the standard UHS-I 104MB/s ceiling — the Ultra 256GB stores tens of thousands of photos and hours of Full HD video, then moves everything to your computer faster than most cards in its class.

The 150MB/s maximum read speed is where the 256GB and higher capacities in the Ultra line deliver a meaningful step up over smaller-capacity Ultra cards. Transferring a full 256GB card — tens of thousands of photos or dozens of hours of video — at 150MB/s takes minutes rather than the extended waits that slower cards impose. For photographers who shoot multi-day events, multi-week trail camera deployments, or high-volume wedding and portrait sessions, fast transfer speeds directly impact how quickly you can begin editing and delivering.

256GB provides massive storage capacity: approximately 68,980 JPEG photos, 4,760 RAW photos, 3,410 minutes of HD video (over 56 hours), or 680 minutes of 4K video (over 11 hours). This is the kind of capacity that lets you load a card at the start of a trip, a season, or a multi-day event and never think about storage again. Trail camera users can deploy for weeks. Wedding photographers can shoot an entire day without swapping cards. Vacationers can capture an entire two-week trip on a single card.

The UHS-I bus with Class 10 and U1 speed ratings guarantees a minimum sustained write speed of 10MB/s, ensuring smooth, buffer-free Full HD (1080p) video recording without dropped frames or interrupted captures. SanDisk's 4-proof durability testing confirms the card is waterproof, shockproof, temperature-proof (operates from -13°F to 185°F / -25°C to 85°C), and X-ray proof — protecting your irreplaceable photos and videos from the real-world hazards photographers encounter routinely. A built-in write-protect switch provides physical hardware protection against accidental deletion or overwriting. Backed by SanDisk's limited lifetime warranty.

Product Features:

  • 256GB Storage Capacity – Room for ~68,980 JPEGs, ~4,760 RAW photos, ~3,410 min HD video, or ~680 min 4K video
  • Up to 150MB/s Read Speed – Proprietary technology pushes beyond UHS-I 104MB/s for faster transfers
  • Class 10 / UHS-I / U1 Speed Rating – Guaranteed minimum 10MB/s sustained write for smooth Full HD video recording
  • Full HD Video (1080p) Performance – Buffer-free continuous recording without dropped frames
  • Waterproof – Withstands immersion in water
  • Shockproof – Resistant to impact and drops
  • Temperature-Proof – Operates from -13°F to 185°F (-25°C to 85°C)
  • X-Ray Proof – Data protected through airport security scanners
  • Built-In Write-Protect Switch – Physical lock prevents accidental deletion or overwriting
  • UHS-I Bus + Backward Compatible – Works with modern UHS-I devices and older standard SD devices
  • Full-Size SD Form Factor (SDXC) – Fits any standard SD card slot
  • Limited Lifetime Warranty – SanDisk's trusted long-term warranty commitment

Product Specifications:

Specification Detail
Brand SanDisk (Western Digital)
Model SDSDUNC-256G-GN6IN
ASIN B0B7NSTFLD
UPC 619659200237
Product Line Ultra
Form Factor Full-Size SD Card (SDXC)
Capacity 256GB
Bus Interface UHS-I
Speed Class Class 10 (C10)
UHS Speed Class U1
Max Read Speed Up to 150 MB/s
Min Sustained Write Speed 10 MB/s
Full HD Video Yes (1080p)
Write-Protect Switch                                                                               Yes (built-in)
Waterproof Yes
Shockproof Yes
Temperature-Proof Yes (-13°F to 185°F / -25°C to 85°C)
X-Ray Proof Yes
Card Dimensions 1.26″ × 0.94″ × 0.09″ (32 × 24 × 2.1mm)
Weight 0.08 oz (2.27g)
Est. JPEG Photos ~68,980
Est. RAW Photos ~4,760
Est. HD Video ~3,410 minutes (~56 hours)
Est. 4K Video ~680 minutes (~11 hours)
Compatible Devices DSLR cameras, mirrorless cameras, point-and-shoot, trail cameras, camcorders, laptops, card readers
Country of Origin China
Warranty Limited Lifetime (SanDisk)
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Customer Reviews (4.8 / 5 · 5 reviews)

Natalie U. ★★★★★

Transferring raw photos from my camera is noticeably faster than with my old card—the 150MB/s read speed makes a real difference when I'm tethering on location. It's handled continuous burst shots without a single write-error during a three-hour outdoor shoot.

Ella K. ★★★★★

I’ve been shooting 4K video with this card for a few weeks, and the transfer speed is a clear step up from my previous card—files move off the card noticeably faster. It’s been reliable every time, even with long recording sessions, and the 256GB holds plenty of footage before I need to offload.

Lily W. ★★★★★

Swapped my old 64GB card for this 256GB and the extra room is a lifesaver for 4K video. I've shot two full days without worrying about space, and the read speed still makes pulling files off feel quick.