The Tab X and Tab Ultra are two of the newest E-ink writing tablets to be launched by Onyx Boox (and they are both on my list of the Top 5 best devices). Because Boox’s naming conventions are not always intuitive, in this blog post I want to highlight the main differences between the two devices.
First, the similarities…
Both the Tab X and the Tab Ultra use Boox’s latest technologies to enhance the user experience by making it smoother and easier to use.
This includes Super Refresh technology (both a graphics processor and improved software) to improve screen refresh rates and a user interface that supports widgets and customisation to resemble the home screen of other Android devices closely.
They also both have built-in speakers, a microphone, frontlight WiFi, Bluetooth and USB-C. They also have a G-Sensor automatically that flips the screen between landscape and portrait mode when the tablet is rotated.
Under the hood, they both use the same 1.8GHz octa-core processor and have 128Gb of storage space along with a powerful 6300mAh battery.
They also both ship with Boox’s Pen2 Pro stylus (which has an eraser at the top).
On to the differences…
The main difference is that the Tab X has a larger 13.3″ screen (A4-sized) compared to the Tab Ultra’s 10.3″ (A5-sized) screen. This means that the Tab X has a larger canvas area for writing and a higher screen resolution, however this does mean that pixel density is ever-so-slightly lower.
The Tab X uses a Mobius Carta e-ink screen/backplane compared to the Tab Ultra’s glass Carta HD screen. This means that the Tab X screen is a bit more flexible and less likely to break under stress.
Both devices have a similar thickness, but because of the larger screen on the Tab X, the dimensions (footprint) and weight of the device are bigger.
The Tab X also has 2Gb more memory than the Tab Ultra.
The Tab Ultra has some additional hardware features that aren’t available on the Tab X, including a rear-facing camera for scanning documents and a slot for a MicroSD card for file transfers and to expand storage capacity.
The Tab Ultra is also designed to work seamlessly with a magnetic keyboard/case. The Tab X does support third-party Bluetooth keyboards, but Boox does not manufacture one. In addition, the Tab X is not magnetic, so the stylus will not attach to the side of the tablet (as it does with the Tab Ultra).
In terms of price, the Tab Ultra is around $600USD, and the Tab X is £880USD.
The table below summarises the differences:
|Feature||Tab X||Tab Ultra|
|Screen size||13.3″ (A4)||10.3″ (A5)|
|Screen resolution||1650 x 2200||1404 x 1872|
|DPI (Dots per inch)||207||227|
|Screen type||Mobius Carta (plastic)||Carta HD (glass)|
|SD Card slot||No||Yes|
Boox Tab X vs Tab Ultra
|PRODUCT||BOOX TAB X||BOOX TAB ULTRA|
|Specs & ratings info|
|Manufacturer||Onyx Boox||Onyx Boox|
|SCREEN||BOOX TAB X||BOOX TAB ULTRA|
|Screen type||Mobius Carta 1250||Carta HD|
|Screen resolution (B/W)||1650 x 2200||1404 x 1872|
|Screen density (B/W)||207dpi||227dpi|
|Screen resolution (Colour)||n/a||n/a|
|Screen density (Colour)||n/a||n/a|
|HARDWARE||BOOX TAB X||BOOX TAB ULTRA|
|CPU||1.8 Ghz octa-core||1.8 Ghz octa-core|
|SD card slot||⨯||✓|
|SOFTWARE||BOOX TAB X||BOOX TAB ULTRA|
|Operating system||Android 11||Android 11|
|Google Play Store||✓||✓|
|Brush types||Fountain Pen, Paintbrush, Ballpoint Pen, Pencil, Marker||Fountain Pen, Paintbrush, Ballpoint Pen, Pencil, Marker|
|File formats||PDF, EPUB, DOC, DOCX, PPT, PPTX, TXT, HTML, RTF, FB2, CBZ, CBR, AZW3, MOBI, PRC, DJVU, CHM, ZIP||PDF, EPUB, DOC, DOCX, PPT, PPTX, TXT, HTML, RTF, FB2, CBZ, CBR, AZW3, MOBI, PRC, DJVU, CHM, ZIP|
|File formats (image)||PNG, JPG, TIFF, BMP||PNG, JPG, TIFF, BMP|
|File formats (Audio)||WAV, MP3||WAV, MP3|
|BUY||BOOX TAB X||BOOX TAB ULTRA|
|Where to buy||Boox Euro Shop|
|Boox Euro Shop|
|PRODUCT||BOOX TAB X||BOOX TAB ULTRA|
About the author
Dan Dutton is passionate about E-ink writing tablets, which bring together the pleasure of writing on paper with the power of digital technology. When he bought his first tablet, he realised that there wasn't a lot of unbiased information available for people that were considering buying an E-ink tablet, and so he built eWritable.