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Small black microSDXC card with gold contacts and full-size SD adapter

Patriot Memory

Patriot Memory PEF256GEP31MCX 256GB microSDXC memory card

SKU CH-5RHK-KDY50 MPN PEF256GEP31MCX

256GB microSDXC card with U3, V30 and A1 ratings, up to 90MB/s read and 80MB/s write for 4K video and fast Android apps, includes SD adapter

  • Total capacity256 GB
  • Speed classUHS-I / U3 / Class 10 / A1 / V30
  • Max read speedUp to 90 MB/s
  • Write throughputUp to 80 MB/s
  • Product typeMicroSDXC
  • Key featuresThe Patriot EP A1 microSD card comes with an A1 App Classifi

Capacity 256GB

  • A1 rating speeds up Android app launch and storage
  • V30 class sustains 4K video recording at 30 MB/s
  • Reads up to 90 MB/s for quick file access
  • Writes up to 80 MB/s for fast capture bursts
  • Includes SD adapter for use in cameras and laptops

Patriot EP Series 256GB microSDXC

This Patriot EP Series card is a microSDXC memory card with 256GB capacity. It is designed for Android phones and tablets that support adoptable storage and A1 app performance. The card also works in cameras, camcorders and other devices with a full-size SD slot when used with the bundled adapter.

UHS-I U3 V30 A1 with SD adapter

The card uses a UHS-I interface rated U3, Class 10, A1 and V30. It requires a host device with a microSDXC or SDXC slot that supports these speed classes. The included adapter lets you move the card between mobile devices and larger SD-equipped gear without buying a separate accessory.

256GB capacity for 4K video and apps

With 256GB you can record 4K video continuously and keep many apps installed directly on the card. Sequential reads reach up to 90MB/s and writes up to 80MB/s, so sustained 4K capture is supported. The A1 rating ensures smooth app launch and operation, while the V30 rating guarantees minimum write performance for video.

How it compares

Measured against everything we stock in SD & MicroSD Memory Cards, at today’s prices. Recalculated every night.

Price $12.99
Cheaper than about 91% of the 1,947 comparable items (median $46.99).
Total capacity 256 GB
Higher than about 80% of the 1,132 comparable items (median 64 GB).
Price per TB $50.74 per TB
Cheaper than about 99% of the 901 comparable items (median $374.69 per TB).

Specifications

Product
Brand namePatriot
Product lineEP Series
Model namePEF256GEP31MCX
Total capacity256 GB
Product typeMicroSDXC
Performance
Speed classUHS-I / U3 / Class 10 / A1 / V30
Max read speedUp to 90 MB/s
Write throughputUp to 80 MB/s
Size & build
Shipping weight0.01 kg
Package size132 × 98 × 6 mm

Other versions of this model

2 more in the same range

Questions about this item

How long can the card sustain 80MB/s writes before thermal throttling reduces performance?

The EP Series microSDXC carries a V30 rating that guarantees a minimum sustained write speed of 30MB/s; the 80MB/s figure is a peak burst speed and the card will throttle once its internal temperature limit is reached.

Does the card run hot or draw enough power to drain a phone battery noticeably during all-day 4K recording?

MicroSD cards draw very little power and the EP Series operates within the standard UHS-I voltage range, so heat and battery impact stay minimal even during continuous 4K capture.

Which devices can use this 256GB card without a firmware update or extra hardware?

Any device with a microSDXC slot that supports UHS-I and the exFAT file system — including Android phones, cameras, drones and laptops — will recognise the card immediately; the bundled SD adapter adds full-size SD slot compatibility.

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