eWritable > Blog > BOOX TAB ULTRA C vs BOOX TAB X: Which e-ink tablet is best?

BOOX TAB ULTRA C vs BOOX TAB X: Which e-ink tablet is best?

This page was created to explore the similarities and differences between two e-ink tablets; the ONYX BOOX TAB ULTRA C, and the ONYX BOOX TAB X.

This is currently a simplified comparison consisting of a table of side-by-side specifications, and review cards of each tablet, outlining their pros and cons. If a tablet has a rating then you can also click on it for a full and detailed review of the tablet.

I do write detailed ‘versus‘ comparisons, however because I am only one person it is impractical for me to compare every single e-ink tablet against every other one! So if you think that this page would benefit from being fleshed out with additional information and my own thoughts and opinions, then feel free to drop me an email at dan@ewritable.com – I will prioritise pages that get the most requests πŸ™‚

Additional E-Ink Tablet Resources

If you’re new to e-ink tablets, you may wish to take a look at:

I have also created a gigantic e-ink comparison table (which is also searchable/filterable, so you can whittle down your search to the tablets that best meet your needs).

And a list of (what I believe to be) the best e-ink tablets can be found here.

Now, onto the comparison between the ONYX BOOX TAB ULTRA C and the ONYX BOOX TAB X.

Spec Comparison

Below is the comparison table for the ONYX BOOX TAB X and ONYX BOOX TAB ULTRA C

PRODUCTBOOX TAB ULTRA CBOOX TAB X
Specs & ratings infoONYX BOOX TAB ULTRA CONYX BOOX TAB X
My Rating
Price (approx)$600
Limited availability
$880
ManufacturerOnyx BooxOnyx Boox
Release year20232023
SCREENBOOX TAB ULTRA CBOOX TAB X
Screen typeKaleido 3Mobius Carta 1250
Screen size10.3"13.3"
Screen resolution (B/W)1860 x 24801650 x 2200
Screen density (B/W)300dpi207dpi
Colourβœ“
(Kaleido 3)
β¨―
Screen resolution (Colour)930 x 1240n/a
Screen density (Colour)150dpin/a
Frontlightβœ“βœ“
Wacom compatibleβœ“βœ“
Buy
HARDWAREBOOX TAB ULTRA CBOOX TAB X
CPU1.8 Ghz octa-core1.8 Ghz octa-core
RAM4Gb6Gb
Storage128Gb128Gb
Battery6300mAh6300mAh
Super Refreshβœ“βœ“
Keyboard folioβœ“β¨―
Speakersβœ“βœ“
Microphoneβœ“βœ“
G-Sensorβœ“βœ“
Ceramic Tip⨯⨯
Bluetoothβœ“βœ“
Fingerprint scannerβœ“β¨―
SD card slotβœ“β¨―
Rear cameraβœ“β¨―
Front camera⨯⨯
Waterproof⨯⨯
USB-Cβœ“βœ“
Width184.5mm228mm
Height225mm310mm
Thickness6.7mm6.8mm
Weight480g560g
Buy
SOFTWAREBOOX TAB ULTRA CBOOX TAB X
Operating systemAndroid 11Android 11
Google Play Storeβœ“βœ“
Kindle supportβœ“βœ“
Handwriting searchβœ“βœ“
Handwriting conversionβœ“βœ“
Insert shapesβœ“βœ“
Insert imagesβœ“βœ“
Split screenβœ“βœ“
Custom templatesβœ“βœ“
No. templates40+40+
Brush typesFountain Pen, Paintbrush, Ballpoint Pen, Pencil, MarkerFountain Pen, Paintbrush, Ballpoint Pen, Pencil, Marker
Screen shareβœ“βœ“
ADE support⨯⨯
File formatsPDF, EPUB, DOC, DOCX, PPT, PPTX, TXT, HTML, RTF, FB2, CBZ, CBR, AZW3, MOBI, PRC, DJVU, CHM, ZIPPDF, EPUB, DOC, DOCX, PPT, PPTX, TXT, HTML, RTF, FB2, CBZ, CBR, AZW3, MOBI, PRC, DJVU, CHM, ZIP
File formats (image)PNG, JPG, TIFF, BMPPNG, JPG, TIFF, BMP
File formats (Audio)WAV, MP3WAV, MP3
Buy
BUYBOOX TAB ULTRA CBOOX TAB X
Where to buyAmazon BE
Amazon DE
Amazon ES
Amazon PL
Amazon US
eBay AU
eBay CA
eBay DE
eBay ES
eBay FR
eBay IE
eBay IT
eBay UK
eBay US
Boox Euro Shop
Boox Shop
Reseller (CA)
Amazon BE
Amazon DE
Amazon PL
Amazon UK
Amazon US
eBay AU
eBay CA
eBay DE
eBay ES
eBay FR
eBay IE
eBay IT
eBay UK
eBay US
PRODUCTBOOX TAB ULTRA CBOOX TAB X

To compare even more e-ink tablets, click here for the full comparison table.

ONYX BOOX TAB ULTRA C Review Card

Overall rating

Pros

  • Colour screen
  • High screen resolution/density
  • Great hardware specs
  • Very versatile
  • Sophisticated native reading & note-taking apps
  • Handwriting search/conversion
  • Google Play Store
  • Frontlight
  • Optional keyboard attachment
  • Onboard GPU & Boox Super Refresh Tech
  • Audio (speakers and microphone)
  • 16MP rear-facing camera
  • MicroSD card slot

Cons

  • Expensive
  • Steeper learning curve
  • Some chassis design flaws
  • Heavy
  • Writing feels a little 'slippy'
  • GPU/Super Refresh uses more power
  • Screen is slightly darker than Monochrome Tab Ultra

A powerful and versatile COLOUR e-ink tablet that is as close as you can get to a regular tablet/laptop.

ONYX BOOX TAB X Review Card

Overall rating

Pros

  • Large 13.3" screen
  • Great hardware specs
  • Very versatile
  • Sophisticated native reading & note-taking apps
  • Handwriting search/conversion
  • Google Play Store
  • Frontlight
  • Onboard GPU & Boox Super Refresh Tech
  • Audio (speakers and microphone)

Cons

  • Expensive
  • Steeper learning curve
  • Larger footprint
  • Stylus does not magnetically stick to the tablet
  • GPU/Super Refresh uses more power

The most powerful and versatile 13.3" (A4-sized) tablet on the market.

About the author

Website | + posts

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.

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