Apart from price what is the difference between the S1 Pro and S1 ProX?
The specs look exactly the same.
I could be wrong but apart from the misnamed one I saw on Ebay I don’t think there is a X version…
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It seen an X version I know of a plus version that’s the bigger print size
This amazon link suggests that there’s an increase in the max print speed from 160 mm/s on the Pro to 300 mm/s on the ProX
https://www.amazon.com/Creality-S1-Ender-3-High-Speed-8-6x8-6x10-6in/dp/B0CRDPP7V4?th=1
This is from https://www.crealityofficial.co.uk/
The ProX costs £30 more and from what I can see there is no difference in any of the specs
@PartySausage The maximum print speed is listed as 150mm/s for both Pro and ProX models.
Maybe the X model is sponsored by Elon Musk & for the extra £30 you get a blue tick 
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I saw the site and you are right. I don’t understand in the ads they still are always referring it to as an S1 Pro and never use the “X” in the description or in any of the comparisons.
I wouldn’t buy it as the “X” version until they tell us what the difference is… Maybe you get an extra roll of filament…?? or.???
I emailed the store and got this response
Dear Customer,
Thank you for your contact.
Creality Ender 3 S1 ProX has improved printing speed compared to Ender 3 S1 Pro.
Kind regards
Customer Service Department
So I emailed them again and asked for a link to the specification. The sent me a link to the original page that does not have the ProX specs.
I had a closer look at their “deal” and this is what they offer:
Ender Pro £265
Ender ProX £299
Ender ProX + 2kg PLA Filament £339
Which means they are charging £40 for 2kg filament yet if you buy it separately you can get it for £29.70!
This doesn’t inspire confidence so I have decided to avoid this store (and the ProX since I can not find any specs)
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Hmm seems strange, hopefully someone can clear what’s going on but I feel it’s another store trying to make something seem better. Never seen Creality in with twitter X just yet
Hi guys I emailed creality and found out the difference between the S1 pro and ProX is literally just firmware all hardware is the same as the normal S1 pro however I was not able to find ProX firmware anywhere online so yeah 
hope this helps