
SanDisk Extreme PRO 256GB
Score: 100/100
Kingston Canvas React Plus 128GB
Score: 96/100Rankings

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.

A high-performance 128 GB SDXC UHS-II card designed for professional 8K video and fast burst photography, offering top-tier speeds and rugged durability.
| Attribute | ![]() | ![]() |
|---|---|---|
256 GBbest | 128 GB | |
200 MB/s | 300 MB/sbest | |
140 MB/s | 260 MB/sbest | |
| ↓ lower better | 2 gbest | 10 g |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | ![]() | ![]() |
|---|---|---|
Storage & Capacity(1) | ||
Capacity (GB) | 256 GB | 128 GB |
Performance(4) | ||
Video Speed Class | V30 | V90 |
Maximum Read Speed (MB/s) | 200 MB/s | 300 MB/s |
Maximum Write Speed (MB/s) | 140 MB/s | 260 MB/s |
Bus Interface | UHS-I | UHS-II |
Physical(1) | ||
Weight (g) | 2.0 g | 10 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 hail it as a cinema-grade card with industry-leading write speeds and rugged reliability, ideal for demanding 8K workflows.
Users praise flawless 4K/8K recording and rapid transfers, while noting occasional compatibility issues on older gear.