Silicon Power 1TB Superior UHS-I microSDXC Memory Card with Card

In this review the Silicon Power 1TB Superior UHS-I microSDXC Memory Card with Card Reader is assessed for users who need high-capacity, dependable storage for 4K video and mobile apps. The bottom line: this combo is best for content creators and mobile users who value sustained write speeds and the convenience of a multi-format reader. The card's V30 / U3 rating and reported read speeds up to 100 MB/s with write speeds up to 80 MB/s make it a practical choice when recording Ultra HD video or saving large photo libraries, and the included combo card reader adds flexibility for desktop transfers.

Key Features

• V30 / U3 video rating: Guarantees sustained write performance suitable for continuous Ultra HD 4K video recording without dropped frames.
• High read and write speeds: Read speeds up to 100 MB/s and write speeds up to 80 MB/s speed up file transfers and reduce wait time when offloading footage.
• Large storage capacity: With 1TB capacity this card stores extensive 4K clips, raw stills and app data, reducing the need to swap cards frequently.
• A2 support for apps: Application Performance Class 2 optimizations improve Android app loading and responsiveness when used as expandable storage.
• Combo card reader: The included reader supports common formats with dual SD/MMC and microSD slots for straightforward transfers to a PC or laptop.
• Backward compatibility: Works with devices that accept Class 10 / U1 specifications, helping compatibility with older cameras and devices.

Who It's For

The card is aimed at videographers, action camera users and smartphone photographers who record Full HD and 4K content and need a large 1TB capacity paired with reliable sustained write speeds. Because of its A2 rating, it also suits Android users who want smoother app performance on expandable storage.

Casual users with light photo libraries or those who rarely shoot video may find this capacity more than they need and could look for lower-capacity, lower-cost options instead. Users who require professional V60 or V90-class speeds for high-bitrate cinema workflows should select a higher video class card.

Pros & Cons

Pros

• Strong sustained write performance thanks to the V30 / U3 rating, suitable for 4K recording.
• Fast read speeds up to 100 MB/s make backups and transfers quicker.
• Large 1TB capacity minimizes the need to change cards during long shoots or trips.
• Included combo card reader simplifies file transfers and supports multiple formats.

Cons

• Not targeted at users who need the extra headroom of V60 or V90 for very high-bitrate professional cinema cameras.

Specifications

Brand	SP Silicon Power
Capacity	1TB
Interface / Class	UHS-I, U3, V30, Class 10
Read Speed	Up to 100 MB/s
Write Speed	Up to 80 MB/s (guaranteed V30 minimum 30 MB/s)
App Performance	A2 (Application Performance Class 2)
Accessory	Combo card reader with dual SD/MMC and microSD slots

Our Verdict

The Silicon Power 1TB Superior UHS-I microSDXC with Card Reader is a sensible value for creators and mobile users who need large capacity and dependable 4K-capable write speeds. It combines solid read/write performance, A2 app support and a useful multi-format reader, making it a practical all-in-one choice for shooting, storing and transferring large media libraries.

Frequently Asked Questions

Can this card record 4K video?
Yes. The card meets V30 / U3 standards, which ensures sustained write speeds suitable for 4K Ultra HD recording.

Will it work in older devices?
Yes. It is backward compatible with Class 10 / U1 devices, so older cameras and devices that do not support UHS-I still can use the card at their supported speeds.

What does the included card reader do?
The combo card reader supports the most commonly used formats with dual SD/MMC and microSD slots, enabling direct transfers to a computer without an adapter.