system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: What is difference between a 1TB Micro SD Card and a 1TB Solid State or Hard Disk Drive? Does the difference between the physical sizes of these two devices makes any difference in storing, maintaining or transferring data?
gpt
The sd card interface is generally good for up to 170MB/s read speeds and up to 90MB/s write speeds, which drops down to 30MB/s as the drive fills, it's limited by the extremely small interface and low power available from the form factor (couldn't cool down if you just gave it more power). 

A 1TB HDD can generally read and write at 200-220MB/s when still "fresh", it's generally limited by the speed at which the platters turn.

A 1TB NVME ssd can read at 7000MB/s and write at just about the same speed (if using a PCI-E 4 interface and controller)

So to fill up an SD card will take around 9 hours, to fill up the HDD should take around 2 hours, and the ssd can be filled in about 5 minutes - transfers with big SD cards are extremely painful.