I recently put together my build (see below) and my 750gb caviar black is recognized as having the full amount of space in my bios, but windows vista 64bit only recognizes about 698 gb. i'm used to the idea that some space will be lost in translation and that i won't get 768,000mb on the dot; but over 50 missing gigs seems a bit much. is this normal for this drive or am i missing something?
In hard numbers: WD and ALL hard disk makers use the word "Gigabyte" to mean 1,000,000,000 bytes, which is right - "Giga-" as a prefix means exactly one billion. But Microsoft, like a lot of binary math people, decided long ago to define "Kilobyte" as 1,024 bytes - that is, as 2^10. As things got bigger they perpetuated the habit, so now they use the term "Gigabyte" to mean 1024 x 1024 x 1024 bytes, which is 1,073,741,824. So in their way of defining the term, 750,000,000,000 bytes is called 698.49 Gigabytes. It is EXACTLY the SAME space, but just labeled using two different measurement units, like "inches" and "pazoozas". The confusion is because they are using the same word for two different units!! But at least they are consistent. If you have a file that is 1,048,576 bytes long, M$ will call that 1.000 MB, not 1.049.
If you want to lay blame for the confusion, pick your villain. But you have NOT lost any space.
yeah i did the math and realized the same thing once i noticed a number of people on newegg's review complaining of the same thing, i guess i didn't realize that the difference between 1000^4 and 1024^4 is 7% ... thanks for the clarification.