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

BOOX TAB ULTRA C PRO 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 PRO, 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 🙂

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 PRO 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 PRO

PRODUCTBOOX TAB ULTRA C PROBOOX TAB X
Specs & ratings infoONYX BOOX TAB ULTRA C PROONYX BOOX TAB X
My Rating
Price (approx)$650
$880
ManufacturerOnyx BooxOnyx Boox
Release year20232023
SCREENBOOX TAB ULTRA C PROBOOX 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
Colour✓
(Kaleido 3)
⨯
Screen resolution (Colour)930 x 1240n/a
Screen density (Colour)150dpin/a
Frontlight✓✓
Wacom compatible✓✓
Buy
HARDWAREBOOX TAB ULTRA C PROBOOX TAB X
CPU2.8 Ghz octa-core1.8 Ghz octa-core
RAM6Gb6Gb
Storage128Gb128Gb
Battery4600mAh6300mAh
Super Refresh✓✓
Keyboard folio✓⨯
Speakers✓✓
Microphone✓✓
G-Sensor✓✓
Ceramic Tip⨯⨯
Bluetooth✓✓
Fingerprint scanner✓⨯
SD card slot✓⨯
Rear camera✓⨯
Front camera⨯⨯
Waterproof⨯⨯
USB-C✓✓
Width184.5mm228mm
Height225mm310mm
Thickness6.6mm6.8mm
Weight450g560g
Buy
SOFTWAREBOOX TAB ULTRA C PROBOOX TAB X
Operating systemAndroid 12Android 11
Google Play Store✓✓
Kindle support✓✓
Handwriting search✓✓
Handwriting conversion✓✓
Insert shapes✓✓
Insert images✓✓
Split screen✓✓
Custom templates✓✓
No. templates40+40+
Brush typesFountain Pen, Paintbrush, Ballpoint Pen, Pencil, MarkerFountain Pen, Paintbrush, Ballpoint Pen, Pencil, Marker
Screen share✓✓
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 C PROBOOX TAB X
Where to buyBoox Euro Shop
Boox Shop
Reseller (CA)
Amazon BE
Amazon DE
Amazon ES
Amazon FR
Amazon IT
Amazon NL
Amazon PL
Amazon UK
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 C PROBOOX TAB X

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

ONYX BOOX TAB ULTRA C PRO 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
  • Onboard GPU & Boox Super Refresh Tech
  • Audio (speakers and microphone)
  • MicroSD card slot
  • 16Mpx camera
  • Optional Keyboard Folio

Cons

  • Steeper learning curve
  • GPU/Super Refresh uses more power
  • Screen is darker than monochrome e-ink tablets
  • Some ghosting when the screen changes
  • Lots of options can lead to less focused work
  • Some chassis design flaws
  • Writing feels a little 'slippy'

On paper, it's the most powerful e-ink tablet on the market and is very impressive, but I feel that practical use cases will be limited.

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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