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Silicon Power Superior A2 · microSDXC UHS-I Card

What is the Silicon Power Superior A2 microSD card good for?

The Superior A2 is a U3/V30/A2-rated microSDXC card built for the fastest app and game responsiveness in Silicon Power's Superior lineup, rated up to 100MB/s read and 80MB/s write. A2's higher minimum IOPS rating sets it apart from the standard A1 cards in the range, making it the pick for Android devices, cameras, and drones where app/game launch speed matters most.

Read (max)
Up to 100 MB/s
Write (max)
Up to 80 MB/s
Speed Class
U3 / V30 / A2
Warranty
5 Years
A2 App Performance UHS Speed Class 3 (U3) / V30 4K Ultra HD Recording 128GB–1TB
Check Price & Availability ↑ See Full Specs
Who benefits

Who Benefits Most

AP

Android Users Who Move Apps to a Card

A2's minimum 4,000 random read / 2,000 random write IOPS is more than double A1's minimums, meaning apps and games installed directly on the card launch and run noticeably more responsively.

4K

4K Video Shooters

V30's guaranteed 30MB/s minimum sustained write speed keeps continuous 4K recording free of dropped frames, whether you're using a camera, drone, or dash cam.

OD

Outdoor & Travel Use

Waterproof, shockproof, X-ray-resistant, and rated across a wide -40°C to 85°C storage temperature range — built to survive rough handling and airport security scanners.

Applications

Core Use Cases

AP

Android App & Game Storage

Highly recommended

A2 certification specifically targets random read/write performance — what actually matters when apps and games run directly from the card rather than just storing files on it.

4K

4K Video Recording (Cameras, Drones, Dash Cams)

Highly recommended

V30's guaranteed minimum sustained write speed of 30MB/s is what prevents dropped frames during continuous 4K recording, regardless of the card's higher peak numbers.

GM

Portable Gaming Console Storage

Good fit

Works well as general storage expansion for gaming handhelds, though Silicon Power's dedicated Superior Gaming card (see card selector below) is the more purpose-built option if that's your primary use case.

S2

Nintendo Switch 2 Game Storage

Not compatible

This is a standard microSDXC card, not a microSD Express card, so it cannot be used to save or load games on a Nintendo Switch 2. See the card selector below for the right option.

Which card?

Choosing the Right Silicon Power microSD Card

Silicon Power offers a few different microSD card lines — here's how to pick the right one for your device before you buy.

Card Speed Class Capacity Best For
Superior Pro Colorful U3 / V30 / A1 128GB–1TB Everyday use: phones, tablets, cameras, drones, dash cams, original Nintendo Switch
Superior A2 (this card)
You're here 		U3 / V30 / A2 128GB–1TB Faster Android app/game performance — A2 sets a higher minimum IOPS bar than A1
Superior Gaming U3 / A1 / A2 128GB–1TB General handheld gaming devices and Android gaming handhelds — the 1TB option comes in your choice of A1 or A2 (not Nintendo Switch 2)
Switch 2 microSD Express PCIe Gen3x1, UHS-I U3, A1 512GB–1TB Nintendo Switch 2 game storage specifically — standard microSD cards (including this one) don't work for Switch 2 game saves
Fit rating

Fit by Workload

An objective look at how suited this card is to different workloads.

Workload Fit Why
Android app/game storage Strong A2's higher IOPS minimums improve app responsiveness
4K video recording (cameras, drones, dash cams) Strong V30 guarantees the sustained write speed 4K needs
Portable gaming console storage Good Works well, though a dedicated Gaming card exists
Original Nintendo Switch storage Good Standard microSDXC works as expected
Nintendo Switch 2 game storage Not compatible Switch 2 requires microSD Express cards specifically
Professional RAW/ProRes video Limited V30 doesn't guarantee enough sustained speed for this tier
Feature set

Core Features

01

A2 Rating for App Enhancement

Minimum 4,000 random read / 2,000 random write IOPS — more than double the A1 standard's minimums — for noticeably faster app and game launches on Android devices.

02

U3 & V30 for Uninterrupted 4K Video

A guaranteed minimum sustained write speed of 30MB/s, with peak speeds up to 100MB/s read and 80MB/s write, for uninterrupted 4K Ultra HD recording.

03

Built to Survive Rough Conditions

Waterproof, shockproof, and X-ray-resistant, with a wide -40°C to 85°C storage temperature range — built for outdoor, travel, and adventure use.

04

Reliability & 5-Year Warranty

A rated MTBF of more than 1,000,000 hours, backed by a 5-year limited warranty for long-term peace of mind.

Data sheet

Specifications

Key numbers at a glance, plus the full spec sheet below.

Speed Class
U3 / V30 / A2
Capacity Range
128GB–1TB
Interface
UHS-I
Warranty
5 Years
Capacity Options 128GB / 256GB / 512GB / 1TB
Interface UHS-I
Speed Class U3, V30, A2
Sequential Read (max) Up to 100MB/s
Sequential Write (max) Up to 80MB/s
Guaranteed Min. Sustained Write 30MB/s (V30 spec)
App Performance (A2) Min. 4,000 random read / 2,000 random write IOPS
Dimensions 0.6 × 0.4 × 0.1 inch
Weight 0.02oz / 0.0013lb
MTBF More than 1,000,000 hours
Durability 10,000 insertions (minimum)
Operating Temperature 0°C to 70°C
Storage Temperature -40°C to 85°C
Humidity 8% to 95%
Operating Voltage 2.7V – 3.6V
Warranty 5-year limited warranty

Some of the listed capacity is used for formatting and other functions and isn't available for data storage; actual usable capacity is less than the listed figure. Performance varies by host device and configuration. Warranty coverage is based on TBW or the warranty period, whichever comes first.

Fit check

Compatibility

OK Compatible with microSDHC-enabled host devices — phones, tablets, cameras, drones, dash cams, and the original Nintendo Switch.
! A2's full performance benefit requires an A2-capable host device. On devices that don't specifically support A2, the card still works and typically falls back to A1-equivalent performance.
X Not compatible with SD-only devices or card readers without an adapter, and not compatible with Nintendo Switch 2 game storage (requires microSD Express instead).
Signal check

Community & Review Signals

Independent lab testing on Silicon Power's Superior 1TB A2 card found strong, competitive benchmark results and positioned it as excellent value for money, backed by a 5-year warranty and consistent real-world performance — without any bundled management software, which reviewers noted as the only real trade-off.

TechRadar ↗

Called "as close as it gets to perfection," praising its strong benchmark performance and 5-year warranty.

Troubleshooting

Troubleshooting

Common real-world issues, their likely cause, and how to fix them.

!

Card isn't recognized in an SD card slot

CauseThis is a microSD card, which is not directly compatible with full-size SD-only slots or readers without an adapter.
FixUse a microSD-to-SD adapter (commonly included) when inserting into a full-size SD slot or reader.
!

App/game performance doesn't feel noticeably faster than a standard card

CauseYour host device may not specifically support the A2 standard, in which case performance falls back to A1-equivalent levels.
FixCheck your device's specifications for A2 support; the card itself isn't at fault if the host device doesn't take advantage of A2.
!

4K video recording drops frames

CauseThe card may be nearing full capacity, or the host device itself may not support sustained 4K bitrates.
FixFree up space on the card and check your camera or device's own 4K recording requirements.
!

Nintendo Switch 2 doesn't recognize the card for game saves

CauseThis is a standard microSDXC card, and Switch 2 only accepts microSD Express cards for saving or loading games.
FixYou'll need a dedicated microSD Express card for Switch 2 game storage — see the card selector table above.
Verdict

Summary & Recommendation

Strengths

  • A2 rating delivers genuinely faster app/game launches on supporting Android devices
  • V30 guarantees the sustained write speed continuous 4K recording actually needs
  • Independent testing praised strong benchmark performance and value for money
  • Rugged build (waterproof, shockproof, X-ray-resistant) with a 5-year warranty

Trade-offs

  • Not compatible with Nintendo Switch 2 game storage — that requires microSD Express
  • A2's full benefit requires an A2-capable host device
  • No bundled management software
Recommended Capacity 256GB–512GB for most phones/cameras; 1TB for heavy 4K video or large app libraries
Best For Android app/game performance, 4K action/drone/dash cam footage, original Nintendo Switch
Not Ideal For Nintendo Switch 2 game storage, professional RAW/ProRes video work

The Superior A2's specs and independent testing line up consistently: a dependable, rugged microSDXC card that delivers on its U3/V30/A2 ratings, with genuinely faster app/game performance than an A1 card on supporting devices. It's a strong choice for Android users, 4K shooters, and general-purpose storage. If you're not sure this is the right card for your device, see the card selector guide above.

Check Price & Availability ↑
FAQ

Frequently Asked Questions

What's the difference between A2 and A1?

A2 sets a higher minimum IOPS bar: 4,000 random read / 2,000 random write, versus A1's 1,500 random read / 500 random write. In practice, this means noticeably faster app and game launches on devices that specifically support A2 — the difference is in responsiveness, not the sequential MB/s numbers.

Will this work with my Nintendo Switch 2?

No, not for game storage. Nintendo Switch 2 only accepts microSD Express cards for saving or loading games — this is a standard microSDXC card, so it can't be used for that purpose on a Switch 2. See the card selector table above for the correct option.

Do I need an A2-capable device to benefit from this card?

To get A2's full random-IOPS benefit, yes. If your device doesn't specifically support A2, the card still works fine and typically performs at A1-equivalent levels — you won't lose functionality, just some of the responsiveness upside.

What does the V30 rating guarantee for video recording?

V30 guarantees a minimum sustained write speed of 30MB/s, which is what actually prevents dropped frames during continuous 4K recording. The card's peak rated speed (80MB/s write) is a best-case number under ideal conditions.

What capacity should I buy?

128GB suits light phone or camera use. 256GB/512GB is a comfortable middle ground for most 4K action cam or Android app use. 1TB makes sense for heavy 4K video recording or large app/game libraries.

Learn what makes this product unique and why it’s right for you.
Silicon Power Superior A2 · microSDXC UHS-I Card

What is the Silicon Power Superior A2 microSD card good for?

The Superior A2 is a U3/V30/A2-rated microSDXC card built for the fastest app and game responsiveness in Silicon Power's Superior lineup, rated up to 100MB/s read and 80MB/s write. A2's higher minimum IOPS rating sets it apart from the standard A1 cards in the range, making it the pick for Android devices, cameras, and drones where app/game launch speed matters most.

Read (max)
Up to 100 MB/s
Write (max)
Up to 80 MB/s
Speed Class
U3 / V30 / A2
Warranty
5 Years
A2 App Performance UHS Speed Class 3 (U3) / V30 4K Ultra HD Recording 128GB–1TB
Check Price & Availability ↑ See Full Specs
Who benefits

Who Benefits Most

AP

Android Users Who Move Apps to a Card

A2's minimum 4,000 random read / 2,000 random write IOPS is more than double A1's minimums, meaning apps and games installed directly on the card launch and run noticeably more responsively.

4K

4K Video Shooters

V30's guaranteed 30MB/s minimum sustained write speed keeps continuous 4K recording free of dropped frames, whether you're using a camera, drone, or dash cam.

OD

Outdoor & Travel Use

Waterproof, shockproof, X-ray-resistant, and rated across a wide -40°C to 85°C storage temperature range — built to survive rough handling and airport security scanners.

Applications

Core Use Cases

AP

Android App & Game Storage

Highly recommended

A2 certification specifically targets random read/write performance — what actually matters when apps and games run directly from the card rather than just storing files on it.

4K

4K Video Recording (Cameras, Drones, Dash Cams)

Highly recommended

V30's guaranteed minimum sustained write speed of 30MB/s is what prevents dropped frames during continuous 4K recording, regardless of the card's higher peak numbers.

GM

Portable Gaming Console Storage

Good fit

Works well as general storage expansion for gaming handhelds, though Silicon Power's dedicated Superior Gaming card (see card selector below) is the more purpose-built option if that's your primary use case.

S2

Nintendo Switch 2 Game Storage

Not compatible

This is a standard microSDXC card, not a microSD Express card, so it cannot be used to save or load games on a Nintendo Switch 2. See the card selector below for the right option.

Which card?

Choosing the Right Silicon Power microSD Card

Silicon Power offers a few different microSD card lines — here's how to pick the right one for your device before you buy.

Card Speed Class Capacity Best For
Superior Pro Colorful U3 / V30 / A1 128GB–1TB Everyday use: phones, tablets, cameras, drones, dash cams, original Nintendo Switch
Superior A2 (this card)
You're here 		U3 / V30 / A2 128GB–1TB Faster Android app/game performance — A2 sets a higher minimum IOPS bar than A1
Superior Gaming U3 / A1 / A2 128GB–1TB General handheld gaming devices and Android gaming handhelds — the 1TB option comes in your choice of A1 or A2 (not Nintendo Switch 2)
Switch 2 microSD Express PCIe Gen3x1, UHS-I U3, A1 512GB–1TB Nintendo Switch 2 game storage specifically — standard microSD cards (including this one) don't work for Switch 2 game saves
Fit rating

Fit by Workload

An objective look at how suited this card is to different workloads.

Workload Fit Why
Android app/game storage Strong A2's higher IOPS minimums improve app responsiveness
4K video recording (cameras, drones, dash cams) Strong V30 guarantees the sustained write speed 4K needs
Portable gaming console storage Good Works well, though a dedicated Gaming card exists
Original Nintendo Switch storage Good Standard microSDXC works as expected
Nintendo Switch 2 game storage Not compatible Switch 2 requires microSD Express cards specifically
Professional RAW/ProRes video Limited V30 doesn't guarantee enough sustained speed for this tier
Feature set

Core Features

01

A2 Rating for App Enhancement

Minimum 4,000 random read / 2,000 random write IOPS — more than double the A1 standard's minimums — for noticeably faster app and game launches on Android devices.

02

U3 & V30 for Uninterrupted 4K Video

A guaranteed minimum sustained write speed of 30MB/s, with peak speeds up to 100MB/s read and 80MB/s write, for uninterrupted 4K Ultra HD recording.

03

Built to Survive Rough Conditions

Waterproof, shockproof, and X-ray-resistant, with a wide -40°C to 85°C storage temperature range — built for outdoor, travel, and adventure use.

04

Reliability & 5-Year Warranty

A rated MTBF of more than 1,000,000 hours, backed by a 5-year limited warranty for long-term peace of mind.

Data sheet

Specifications

Key numbers at a glance, plus the full spec sheet below.

Speed Class
U3 / V30 / A2
Capacity Range
128GB–1TB
Interface
UHS-I
Warranty
5 Years
Capacity Options 128GB / 256GB / 512GB / 1TB
Interface UHS-I
Speed Class U3, V30, A2
Sequential Read (max) Up to 100MB/s
Sequential Write (max) Up to 80MB/s
Guaranteed Min. Sustained Write 30MB/s (V30 spec)
App Performance (A2) Min. 4,000 random read / 2,000 random write IOPS
Dimensions 0.6 × 0.4 × 0.1 inch
Weight 0.02oz / 0.0013lb
MTBF More than 1,000,000 hours
Durability 10,000 insertions (minimum)
Operating Temperature 0°C to 70°C
Storage Temperature -40°C to 85°C
Humidity 8% to 95%
Operating Voltage 2.7V – 3.6V
Warranty 5-year limited warranty

Some of the listed capacity is used for formatting and other functions and isn't available for data storage; actual usable capacity is less than the listed figure. Performance varies by host device and configuration. Warranty coverage is based on TBW or the warranty period, whichever comes first.

Fit check

Compatibility

OK Compatible with microSDHC-enabled host devices — phones, tablets, cameras, drones, dash cams, and the original Nintendo Switch.
! A2's full performance benefit requires an A2-capable host device. On devices that don't specifically support A2, the card still works and typically falls back to A1-equivalent performance.
X Not compatible with SD-only devices or card readers without an adapter, and not compatible with Nintendo Switch 2 game storage (requires microSD Express instead).
Signal check

Community & Review Signals

Independent lab testing on Silicon Power's Superior 1TB A2 card found strong, competitive benchmark results and positioned it as excellent value for money, backed by a 5-year warranty and consistent real-world performance — without any bundled management software, which reviewers noted as the only real trade-off.

TechRadar ↗

Called "as close as it gets to perfection," praising its strong benchmark performance and 5-year warranty.

Troubleshooting

Troubleshooting

Common real-world issues, their likely cause, and how to fix them.

!

Card isn't recognized in an SD card slot

CauseThis is a microSD card, which is not directly compatible with full-size SD-only slots or readers without an adapter.
FixUse a microSD-to-SD adapter (commonly included) when inserting into a full-size SD slot or reader.
!

App/game performance doesn't feel noticeably faster than a standard card

CauseYour host device may not specifically support the A2 standard, in which case performance falls back to A1-equivalent levels.
FixCheck your device's specifications for A2 support; the card itself isn't at fault if the host device doesn't take advantage of A2.
!

4K video recording drops frames

CauseThe card may be nearing full capacity, or the host device itself may not support sustained 4K bitrates.
FixFree up space on the card and check your camera or device's own 4K recording requirements.
!

Nintendo Switch 2 doesn't recognize the card for game saves

CauseThis is a standard microSDXC card, and Switch 2 only accepts microSD Express cards for saving or loading games.
FixYou'll need a dedicated microSD Express card for Switch 2 game storage — see the card selector table above.
Verdict

Summary & Recommendation

Strengths

  • A2 rating delivers genuinely faster app/game launches on supporting Android devices
  • V30 guarantees the sustained write speed continuous 4K recording actually needs
  • Independent testing praised strong benchmark performance and value for money
  • Rugged build (waterproof, shockproof, X-ray-resistant) with a 5-year warranty

Trade-offs

  • Not compatible with Nintendo Switch 2 game storage — that requires microSD Express
  • A2's full benefit requires an A2-capable host device
  • No bundled management software
Recommended Capacity 256GB–512GB for most phones/cameras; 1TB for heavy 4K video or large app libraries
Best For Android app/game performance, 4K action/drone/dash cam footage, original Nintendo Switch
Not Ideal For Nintendo Switch 2 game storage, professional RAW/ProRes video work

The Superior A2's specs and independent testing line up consistently: a dependable, rugged microSDXC card that delivers on its U3/V30/A2 ratings, with genuinely faster app/game performance than an A1 card on supporting devices. It's a strong choice for Android users, 4K shooters, and general-purpose storage. If you're not sure this is the right card for your device, see the card selector guide above.

Check Price & Availability ↑
FAQ

Frequently Asked Questions

What's the difference between A2 and A1?

A2 sets a higher minimum IOPS bar: 4,000 random read / 2,000 random write, versus A1's 1,500 random read / 500 random write. In practice, this means noticeably faster app and game launches on devices that specifically support A2 — the difference is in responsiveness, not the sequential MB/s numbers.

Will this work with my Nintendo Switch 2?

No, not for game storage. Nintendo Switch 2 only accepts microSD Express cards for saving or loading games — this is a standard microSDXC card, so it can't be used for that purpose on a Switch 2. See the card selector table above for the correct option.

Do I need an A2-capable device to benefit from this card?

To get A2's full random-IOPS benefit, yes. If your device doesn't specifically support A2, the card still works fine and typically performs at A1-equivalent levels — you won't lose functionality, just some of the responsiveness upside.

What does the V30 rating guarantee for video recording?

V30 guarantees a minimum sustained write speed of 30MB/s, which is what actually prevents dropped frames during continuous 4K recording. The card's peak rated speed (80MB/s write) is a best-case number under ideal conditions.

What capacity should I buy?

128GB suits light phone or camera use. 256GB/512GB is a comfortable middle ground for most 4K action cam or Android app use. 1TB makes sense for heavy 4K video recording or large app/game libraries.

Silicon Power 128GB-1TB Superior UHS-1(U3) V30 A2 MicroSD Memory Card with Adapter

SU128GBSTXDA2V20AC

£20.99
£20.99
Tax included. Shipping calculated at checkout.
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