zlacker

>>surpri+(OP)
And a megabyte is depending on the context precisely 1000x1000=1,000,000 or 1024x1024=1,048,576 bytes*, except when you're talking about the classic 3.5 inch floppy disks, where "1.44 MB" stands for 1440x1024 bytes, or about 1.47 true MB or 1.41 MiB.

* Yeah, I read the article. Regardless of the IEC's noble attempt, in all my years of working with people and computers I've never heard anyone actually pronounce MiB (or write it out in full) as "mebibyte".

>>kmm+rb
I worked with networked attached storage systems at pib scale several years ago and we referred to things in gib/tib because it was significant when referring to the size of systems and we needed to be precise.

That being said, I think the difference between mib and mb is niche for most people