You’re clearly putting thought into this and I applaud that, but there are several issues with your post that make it difficult to follow and potentially misleading—especially for less experienced users who may take your assumptions at face value.
First, a housekeeping point: you posted in the English-speaking section, and while your main text is translated, much of the supporting material—screenshots, pasted product descriptions—appears to come from German-language websites. Unfortunately, the images or pasted ad content did not translate to English, which makes it difficult for others to verify or even understand the basis of your conclusions. It would help a lot if you could provide direct links to the products or pages you’re referencing so others can translate and review them properly thus providing quality feedback.
Second, your statements about eMMC versus SD cards are problematic. You imply that eMMC is more reliable than SD cards, but that’s not accurate. While both use similar NAND flash, SD cards—particularly high-endurance models designed for surveillance and automotive applications—are often more durable and better suited to repeated write cycles which is how the Bambu printers operate. In contrast, low-cost eMMC is frequently soldered directly to a board with no upgrade path, and tends to have shorter write endurance. Suggesting that eMMC is inherently more trustworthy misleads readers into thinking they’re upgrading when they’re not.
Also, the idea that Bambu printers use the SD card as a buffer is incorrect. They use it as a cache—a persistent local storage system, not a temporary holding area. The distinction is important. If that mislabeling is a translation artifact, that’s understandable, but it should be corrected so others don’t get the wrong idea.
Finally, your note about storage capacity doesn’t reflect what’s actually supported. The P1 series, for example, only supports cards up to 32GB and requires FAT32 formatting. Attempting to use a 64GB or larger card will either fail or trigger an auto-format to a 32GB partition. That’s clearly documented here:
In short: I appreciate the effort, but please take more care with formatting, sourcing, and technical accuracy. The risk is that newer members will come away with the wrong conclusions, which helps no one.
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On a related note: Coincidentally, this topic is timely because just this weekend I began benchmarking a range of SD card types—standard, high endurance, and industrial-grade variants—under sustained read/write loads typical of 3D printing workflows. Final benchmarking will be performed in my P1P. The testing isn’t complete yet as it takes 20-30+ minutes to run each test, but I’ll be publishing detailed results soon, along with configuration data, so others can replicate and validate findings across different Bambu printer models. Follow-up post forthcoming.
and so does power, no wires externally and the internal power lines are solid
Its carbon fibre bones attached to purpose built ball joint-brushless motors (that can adjust the angle) that can balance at this point but its not the main way to power the movement just for balance.