Yes you do. You are correct that it's not about the actual formatting (though some space is set aside for the file and partition tables). But note this question is about SSDs, not hard drives.So first, it is NOT that Microsoft does this or that. It that memory is measured in base binary numbering, not base decimal. That is, Microsoft does it correctly by calling 1 kilobyte 1024 bytes because 2 to 10th power (2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2) equals 1024. Therefore, 1KB = 1024 Bytes.
See AlsoNew 1tb hdd only shows as 931gb ?Solved: Hard Drive Shows Wrong Capacity[2024][SOLVED] Hard Drive/External Hard Drive Only Shows Half CapacityRestoring Full HDD/SSD Capacity – STB SuiteDrive (and RAM) makers on the other hand, "market" their drives based on what non-technical marketing weenies claim, that is that, 1KB = 1000 Bytes. In this way, they can market the drives as being bigger.
So mood is exactly correct in that respect.
Second, SSDs need "reserved" space to prevent them from being filled up completely. This space is then used for TRIM and wear leveling to greatly extend the life of SSDs. This process is called "over provisioning" and typically is 6.7% of the total capacity, normally rounded up to 7% of the drive's capacity.
So you do indeed lose some capacity with SSDs - about 7%.
For example, I have a 256GB 850 Pro as my C drive and it shows up as 237GB. I also have a 250GB 850 EVO as my D drive, and is shows up as 232GB.
256 - 7% = 238.08 (which is pretty close to 237)
250 - 7% = 232.5 (which is real close 232)With a 500GB SSD, you will end up with about 465GB of usable space as 500 - 7% = 465. That's 500 x .93 = 465.
