Onyx BOOX Tab X debuts as a new e-ink tablet with a dedicated "Smooth Refresh" GPU

The new Tab X and pre-existing Max Lumi2 are both 13.3-inch (or "A4-sized") tablets with Carta 1250 e-ink displays capable of running Android 11 from the Onyx BOOX range; however, their maker touts the latest model as a considerable upgrade thanks to its increased 6,300mAh battery capacity in a chassis that has shrunk in height by 1.1mm. 

It also packs a GPU (that, while described as "exclusive", is also found in its recent predecessor the Tab Ultra) rated to support 4 different "Super Refresh" modes.

The Tab X is thus rated to switch between them depending on the task at hand (for example, reading or drawing powered by a 4,096-level response to its compatible BOOX Pen2 Pro), in a way that might come closest to adaptive refresh for an e-reader.

The tablet's 2200x1650 display is also driven by an (unnamed) octa-core Qualcomm CPU, 6GB of RAM and 128GB of internal storage. It also has dual-band Wi-Fi, dual speakers, an integrated mic and USB type-C - no 3.5mm jack, though.

The BOOX Tab X is available either via a first-party store or select channels including Amazon, going for US$879.99 at present with a Pen2 Pro in the box.