This is a bit pedantic but capitalization matters in units. I think you mean 1MB instead of 1Mb (byte not bit). And "mb" would be a milli-bit or a thousandth of

This is a bit pedantic but capitalization matters in units. I think you mean 1MB instead of 1Mb (byte not bit). And "mb" would be a milli-bit or a thousandth of a bit, which is a unit that probably makes sense in some situations (e.g., estimating information content of a message). (There's also the extra complexity around MiB vs MB for base 2 vs base 10 prefixes. In this case it would actually be MiB as RAM and cache is normally base 2 sized. But not everyone uses that, relying on convention from context instead.)