Lexar 256GB Professional 1667x SD Card
Bottom line: The Lexar 256GB Professional 1667x SD Card ($169.99 on Amazon as of 2026-10-21 10:15 UTC): UHS-II read speeds up to 250MB/s (1667x) cut card-to-computer offload time; main trade-off: needs a UHS-II camera and reader to reach the 250MB/s figure.
As an Amazon Associate, SpecPicks earns from qualifying purchases. Full disclosure →
*Price sourced from Amazon.com. Last updated 2026-10-21. Price and availability subject to change.
Pros & Cons
Pros
- ✓ UHS-II read speeds up to 250MB/s (1667x) cut card-to-computer offload time
- ✓ V60 and U3 ratings sustain writes for 4K video and long continuous bursts
- ✓ 256GB capacity means fewer card swaps across a full shoot day
- ✓ Backwards compatible with UHS-I devices and Class 10 speeds in non-UHS cameras
Cons
- ✗ Needs a UHS-II camera and reader to reach the 250MB/s figure
- ✗ V60 rather than V90, so the most demanding high-bitrate 4K/8K modes may fall short
- ✗ 250MB/s is a read rating; Lexar does not publish a matching write speed here
- ✗ Operating range tops out at 70 degrees C, a limit for extreme-heat shooting
Manufacturer description
The Lexar Professional 1667x 256GB SDXC card is built for photographers and videographers who shoot 4K and burst sequences without wanting to swap cards mid-session. It uses UHS-II technology with a UHS Speed Class 3 (U3) and V60 rating to hit read speeds up to 250MB/s, which is the part you feel most at the end of a shoot: offloading a full 256GB card to your computer takes a fraction of the time a UHS-I card needs. In the camera, that headroom supports 1080p full-HD, 3D, and 4K video capture on DSLRs, HD camcorders, and mirrorless bodies, plus deep continuous-burst buffers for sports and…
SpecPicks Verdict
SpecPicks scored Lexar 256GB Professional 1667x SD Card using a rating × review-volume × price-fit model applied to published specs and reviews across the PC & gaming hardware category. Lexar's PC & gaming hardware lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.
Common buyer scenarios for PC & gaming hardware of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.
Frequently Asked Questions
Is this SD card fast enough for 4K video?
Yes. It carries U3 and V60 speed-class ratings, which Lexar specifies for 1080p full-HD, 3D, and 4K video capture on DSLRs, HD camcorders, and 3D cameras. For extremely high-bitrate 4K or 8K codecs, check your camera's minimum card requirement, since some bodies call for a V90 card.
Will it work in my camera if it only supports UHS-I?
Yes. The card is backwards compatible with UHS-I devices and runs at UHS-I speeds in them. In older non-UHS cameras and readers it performs at Class 10 speeds. You just will not see the full 250MB/s read rate without a UHS-II camera and a UHS-II card reader.
What is the actual write speed?
Lexar publishes the 250MB/s (1667x) figure as a maximum read speed and does not list a separate write rating for this card. The V60 video speed class guarantees a minimum sustained write of 60MB/s, which is the number to plan around for video work. Check the product listing for any updated specs.
How much 4K footage fits on the 256GB version?
That depends entirely on your camera's bitrate and codec, so consult your camera manual's recording-time chart. Lexar's own framing is that the large capacity lets you shoot longer without changing cards, which is the practical benefit on a full-day shoot.
Key Features
- Get high-speed performance with UHS-II technology (U3) for a read transfer speed up to 250MB/s (1667x)
- Captures high-quality images and extended lengths of stunning 1080P full-HD, 3D, and 4K video with a DSLR camera, HD camcorder, or 3D camera
- Large capacity options up to 256 GB let you enjoy shooting longer without changing cards
- High-speed file transfer from card to computer to dramatically accelerate workflow
- Backwards compatible with UHS-I devices and backed by limited lifetime product support. Operating Temperature-0° to 70° C (32°F to 158°F)
- Limited lifetime warranty
Full Specifications
| Brand | Lexar |
|---|---|
| Color | Black |
| Model Name | 1667x SD |
| Read Speed | 250 megabytes_per_second |
| Unit Count | 1 Count |
| Media Speed | 120 MB |
| Model Number | LSD256CBNA1667 |
| Warranty Type | Lifetime |
| Built-In Media | Lexar SILVER Series Professional 1667x 256GB UHS-II SDXC Memory Card |
| Item Type Name | SDXC Memory Card |
| Mfr Part Number | LSD256CBNA1667 |
| Flash Memory Type | SDXC |
| Compatible Devices | Camera |
| Additional Features | Temperature Proof |
| Warranty Description | Limited-lifetime warranty |
| Hardware Connectivity | SDXC |
| Item Dimensions L x W | 1.25"L x 0.95"W |
| Memory Storage Capacity | 256 GB |
| Flash Memory Video Speed Class | V60 |
| Global Trade Identification Number | 00843367114986 |
| Full listing title | Lexar 256GB Professional 1667x SD Card, UHS-II, C10, U3, V60, Full HD, 4K, Up To 250MB/s Read SDXC Memory Card, for Professional Photographer, Videographer, Enthusiast (LSD256CBNA1667) | Up to 250MB per S Read, U3 and Class 10, Ideal for 4K Video and Burst Photos |
Ready to buy?
Lexar 256GB Professional 1667x SD Card, UHS-II, C10, U3, V60, Full HD, 4K, Up To 250MB/s Read SDXC Memory Card, for Professional Photographer, Videographer, Enthusiast (LSD256CBNA1667) | Up to 250MB per S Read, U3 and Class 10, Ideal for 4K Video and Burst Photos is listed on Amazon. Price, availability, shipping and returns are set by Amazon and its sellers — check the listing for current terms. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.
*Price sourced from Amazon.com. Last updated 2026-10-21. Price and availability subject to change.
More guides & deep dives from the SpecPicks archive
Browse all articles & guides →- The Complete Voodoo5 5500 AGP Driver Guide (2026 Edition)
- Best Budget Gaming PC Build 2026 — ~$1,000 ($800 on Sale)
- How to Build a Windows 98 Retro PC in 2026
- Best Retro Handhelds in 2026 — From $35 to $500
- Emulation Hardware in 2026: FPGA, Software, and Cart-Reader Ecosystems
- Best 1440p Gaming GPUs in 2026
- RTX 4070 Super vs RX 7800 XT — Which to Buy in 2026
More reviews from the SpecPicks archive
Browse all reviews →- Best Budget Gaming CPUs for 1080p in 2026
- Best Storage for a Raspberry Pi Homelab: SATA SSD over USB vs microSD
- Qwen 3.6 35B-A3B-MTP on a GTX 1060 6GB: How Far Can Old GPUs Still Go?
- Homebrew Hardware Mod Gives the NES a Graphics Upgrade
- Running DeepSeek Distills Locally on a Ryzen 7 5800X + RTX 3060
- Best Gaming Headsets and Audio Gear for Console Players in 2026
- Panther Lake NPU vs RTX 3060 12GB for Local LLM Inference
- Can Local Qwen 3.6 Match Frontier Models at Canvas Code?
- Cheap 80s Keyboard Gets a Modern Brain Upgrade
- 1999 Dream Build Reborn: Voodoo3, Pentium III, CF Storage
- Raspberry Pi 4 8GB in 2026: Still the Best Home-Lab SBC for Under $80
- Claude Now Writes 65% of Anthropic's Code: The Local Coding-Rig Angle
- Claude Sonnet 5 Closes the Opus Gap: When Local Still Wins
- Sound Blaster Audigy FX Deep Dive: Is It Worth It for a 2003 WinXP Period-Correct Gaming Build?
- Why Local RAG Beats Cloud Agents at Follow-Up Questions on an RTX 3060
- DFlash Speculative Decoding on Qwen3.5-35B-A3B: How an RTX 2080 Super 8GB Hits 60+ tok/s
- Running Mistral's New OCR Model Locally on a 12GB GPU
- Arc A770 16GB vs RTX 3060 12GB for Local Llama 3
- Mini-ITX Gaming PC in a 3D Printed Case: 2026 Builder's Guide
- Step 3.7 Flash vs Gemma 4 12B: Which Local Model Wins on a 12GB GPU?
- SNES Classic vs Sega Genesis Mini: Best Plug-and-Play Retro Console in 2026
- Best CPU Coolers for Ryzen in 2026: 5 Tested Picks
- Logitech G502 Hero in 2026: Is the $40 Classic Still the Mouse to Beat?
- Intel Arc Pro B60 vs RTX 3060 12GB for Local LLM
Earliest SpecPicks reviews
Browse full archive →- Best GPU for Llama 3.1 8B (2026)
- Best GPU for Qwen 3 14B (2026)
- Best GPU for Qwen 3 32B (2026)
- Best GPU for Llama 3.1 70B (2026)
- Best GPU for DeepSeek-R1 32B (2026)
- Best GPU for Llama 3.1 405B (2026)
- How to run Llama 3.1 8B on NVIDIA GeForce RTX 5090
- How to run Qwen 3 14B on NVIDIA GeForce RTX 5090
- How to run Qwen 3 32B on NVIDIA GeForce RTX 5090
- How to run Llama 3.1 70B on NVIDIA GeForce RTX 5090
- How to run DeepSeek-R1 32B on NVIDIA GeForce RTX 5090
- How to run Llama 3.1 8B on NVIDIA GeForce RTX 4090