
SanDisk Extreme PRO 256GB
Score: 100/100
Lexar Gold 1800x 64GB
Score: 100/100Rankings

The SanDisk 256 GB Extreme PRO SDXC UHS-I offers top-tier read/write performance (200 / 140 MB/s) and rugged protection, making it a strong choice for 4K creators. Its UHS-I bus limits it on cameras that can exploit UHS-II bandwidth, and some users report speed variance with cheaper readers.

The Lexar Professional 1800x 64 GB SDXC UHS-II card delivers top-tier read/write speeds and V60 video performance for 4K workflows, packaged in a rugged, weather-proof design with a lifetime warranty.
| Attribute | ![]() | ![]() |
|---|---|---|
256 GBbest | 64 GB | |
200 MB/s | 280 MB/sbest | |
140 MB/s | 180 MB/sbest | |
| ↓ lower better | 2 gbest | 2 gbest |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | ![]() | ![]() |
|---|---|---|
Storage & Capacity(1) | ||
Capacity (GB) | 256 GB | 64 GB |
Performance(4) | ||
Video Speed Class | V30 | V60 |
Maximum Read Speed (MB/s) | 200 MB/s | 280 MB/s |
Maximum Write Speed (MB/s) | 140 MB/s | 180 MB/s |
Bus Interface | UHS-I | UHS-II |
Compatibility(1) | ||
Compatible Devices | DSLRs, mirrorless cameras, camcorders, laptops | UHS-I devices (up to 104 MB/s) |
Physical(1) | ||
Weight (g) | 2.0 g | 2 g |

Products in the top-left offer the best value (high score, low price).

Professional reviewers praise the blend of high read/write speeds, V30/U3 ratings and rugged build, recommending it for 4K creators while noting UHS-I is slower than UHS-II cards.
Everyday users highlight reliable performance, fast transfers and durability, but note occasional slower-than-advertised speeds and occasional shipping delays.

“Works perfectly with my Sony A7 III and Panasonic GH5”

“Fast transfer speeds save time”

“Durable and reliable”




Professional reviewers commend the Lexar 1800x for its pro-level reliability, fast 280 MB/s read speed and V60 rating, while noting performance hinges on UHS-II-compatible cameras and the lack of a V90 rating for 8K.
Everyday users praise the card for flawless 4K video capture, robust build quality and excellent value, though some note occasional lower write speeds on older devices.