After running Defraggler today I happened to look at the free and used space as well as the drive capacity.
The program displays my drive capacity as 747,691,307,008 bytes 696.3 GB.
While the display for the capacity as the total number individual bytes is correct, the number of gigabytes displayed is not. A gigabyte (GB) is 1,000,000,000 bytes.
Piriform is inapproriately using a giga (G) as a binary prefix multiple in contravention to BIPM SI usage rules.
For the numeric value displayed, the correct unit would be the GiB. 1 GiB = 1,073,741,824 bytes
See:
BIPM SI Brochure
http://www.bipm.org/en/si/si_brochure/
Noting: "These SI prefixes refer strictly to powers of 10. They should not be used to indicate powers of 2 (for example, one kilobit represents 1000 bits and not 1024 bits). The IEC has adopted prefixes for binary powers in the international standard IEC 60027-2: 2005, third edition"
IEC 80000-13
http://www.iso.org/iso/catalogue_detail?csnumber=31898
http://en.wikipedia.org/wiki/IEC_80000-13
