Technology glossary

MediaTek Dimensity 8400

A member of MediaTek’s chip family with eight Arm Cortex-A725 cores and a 4G/5G modem.

MediaTek presents the Dimensity 8400 as an “all big core” chip: all eight cores are Arm Cortex-A725. The cores are grouped with one 1 MB, three 512 KB and four 256 KB L2 caches, and a 6 MB L3 and 5 MB system-level cache (SLC) are listed.

According to the specification table on the product page, the graphics side is an Arm Mali-G720 MC7, memory is LPDDR5X (up to 8533 Mbps), storage is UFS 4 + MCQ and display output is 4K60. MediaTek describes the chip first of all for premium smartphones; which of these features a tablet uses is up to the device maker.

Devices using this technology

Tablets · 2026

Amazon Alexa Tablet 12 Pro (2026)

The top model of Amazon’s Alexa Tablet line, which runs Android with Google Play. It has an 11.95-inch, 120 Hz, 3:2 IPS display, a 6.5 mm aluminum body and a fingerprint sensor; Alexa+ and a Kindle reading mode are built into the interface. The separately sold Pro Pen and Pro Keyboard are supported. This record is the standard (glossy) display 8 GB / 128 GB Wi-Fi configuration; reviews name non-removable Amazon elements on the home screen and Android apps not adapted to large screens as limitations.

Sources

  1. MediaTek: Dimensity 8400