marti
Color outside the lines
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join:2001-12-14
Houston, TX
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1 edit | [hard drive] New HD capacity is way less than the specs on N
I just received WD Caviar SE16 WD3200AAKS 320GB. HD details (»www.newegg.com/product/product.a···22136074). In Windows (disk management) the drive is shown as 298.09.
I can understand a little space for "overhead," but over 20 GB? (thanks)
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dbmaven
There's no shortage
Premium,Mod
join:1999-10-26
Sty in Sky
clubs: | Re: [hard drive] New HD capasity is way less than the specs on N
320 really = 305.
Windows adds about 7 in overhead.
The math here still applies. |
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seaquake
Premium,MVM
join:2001-03-23
Millersville, MD
clubs:
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| reply to marti
Or more simply stated, HD manufacturers consider 1MB to be 1,000,000 KB. In reality, a MB is 1,024,000 KB. Once you start getting into the multi-gigabyte range the discrepancy is quite large. I wish they'd stop using incorrect numbers cause it does stink.
It reminds me of the days when a 19" CRT was actually 17.5 to 18.1"; they reported the corner to corner of the bezel, not the screen. |
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Cabal
Premium
join:2007-01-21
Boston, MA
| Chances are good it says somewhere on the drive or box exactly how many bytes are present in the drive (320,000,000,000). Chances are even better that your drive manufacturer is the correct one, and your OS is incorrectly telling you 298.09 GB when it means 298.09 GiB.
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marti
Color outside the lines
Premium,MVM
join:2001-12-14
Houston, TX
clubs:
| reply to marti
Thanks guys. The HD is installed, so can't look and see what it says on the label.
I can live with size, as it is in an external case for backups and such, but I do think the "math" should add up!
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Ken Peterson
Premium
join:2000-12-08 | reply to marti
Yeah, when I recently plopped a 1 TB drive in my PVR PC, it was more like 936GB. As said above, like the old CRT diagonal measurements, or like the old motorcycles back in the '70s. A 350cc bike was really a 325cc machine! |
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boogietillyapuke
B.O.H.I.C.A.
Premium
join:2000-09-14
On Da' Edge
| reply to marti
Seagate 320 internal=298
Seagate 320 External=298
Seagate 320 Internal with linux installed, as I can't see it in windows, I'm gonna take a SWAG and say.......298. 
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signmeuptoo
Folding and Crunching Not just Breakfast
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LOSTinSpace
clubs:
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| reply to marti
I don't see what the big deal is. It's been this was since the beginning. If you buy computer stuff, understanding the math behind it is just part of the deal.
I agree that they should note the formatted capacity, in inclusion, but it isn't like this is something new or earth shattering.
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koolman2
Premium
join:2002-10-01
Anchorage, AK
 ·GCI.net
| reply to marti
500 GB drive |
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severach
join:2002-09-12
Jackson, MI
| reply to marti
A Kilobyte can be 1000 or 1024. A Megabyte can be 1000*1000, 1000*1024, or 1024*1024. When a Megabyte is reduced so that "MB" can be written afterwards it can be by any of those factors. Software authors and advertisers choose whatever seems most appropriate.
The current definition for the Megabyte that hard drive makers use is 1000*1000 which is the smallest possible value that can still be called a Megabyte. It needs to be that way for advertising or we'd get wars about "My Megabyte is bigger than your Megabyte." |
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floydb_1982
join:2004-08-25
Kent, WA
 ·Clearwire Wireless
·Comcast
|  reply to marti
Let me point out that a floppy disk unformatted is 2 megabytes but when formatted it come out to 1.38 megabytes witch is = to 1.44 megabytes. Another example would be my external 500 gigabyte hard drive. The computer reads the space as 465 gigabytes witch is = to 500,105,216,000 bytes. Do you understand what I am trying to say here? Newegg is not lying at all. In fact why should you blame Newegg the information they post about each of the hardware they sell comes direct from the manufacture. So if you feel miss led then go to the manufactures website and complain to them and not Newegg. |
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trog
join:2001-03-25
Scarborough, ON | reply to marti
From the WD website
SATA Hard Drives 320 GB
Formatted capacity 320,072 MB
User sectors per drive 625,142,448
Sector size 512
625,142,448 * 512 / (1024*1024*1024) = 320072933376 / 1073741824
= 298.09 |
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deblin
Dark Side of the Moon
Premium,MVM
join:2001-09-01
Middletown, DE
| reply to seaquake
said by seaquake  :Or more simply stated, HD manufacturers consider 1MB to be 1,000,000 KB. In reality, a MB is 1,024,000 KB. Actually, it's 1024*1024 or 1,048,576 KB. The same applies going to GiB: 1024*1024*1024, or 1073741824.
Assuming no filesystem formatting/MBR/boot sector/etc, the size of a drive is:
advertised_size * 1000 * 1000 * 1000 / 1024 / 1024 / 1024
or
adv_size / 1.073741824
So yeah, roughly 7.4% is "lost" due to the way hard drive manufacturers calculate the available space.
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aurgathor
join:2002-12-01
Lynnwood, WA | reply to marti
From a drive's box: "A gigabyte (GB ) means 1 billion bytes" |
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deblin
Dark Side of the Moon
Premium,MVM
join:2001-09-01
Middletown, DE | Yup, and gigabyte != gibibyte. |
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Sandman5
Premium
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Brookline, MO
clubs:
| reply to signmeuptoo
said by signmeuptoo :I don't see what the big deal is. It's been this was since the beginning. If you buy computer stuff, understanding the math behind it is just part of the deal. I think part of the problem is that as drives get bigger, it seems like we're losing more space.
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deblin
Dark Side of the Moon
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join:2001-09-01
Middletown, DE
| said by Sandman5 :I think part of the problem is that as drives get bigger, it seems like we're losing more space. :)
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Anonymous_
Anonymous
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127.0.0.1
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| reply to severach
said by severach :A Kilobyte can be 1000 or 1024. A Megabyte can be 1000*1000, 1000*1024, or 1024*1024. When a Megabyte is reduced so that "MB" can be written afterwards it can be by any of those factors. Software authors and advertisers choose whatever seems most appropriate. The current definition for the Megabyte that hard drive makers use is 1000*1000 which is the smallest possible value that can still be called a Megabyte. It needs to be that way for advertising or we'd get wars about "My Megabyte is bigger than your Megabyte." but they should say 935GB and not 1TB  |
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bigunk
Gort, Klattu Birada Nikto
join:2001-02-10
Santa Clarita, CA | reply to deblin
I guess I'll dig out a few of my 20G drives so I will still have lots of space to spare. I just threw out my last 120MB Seagate RLL drive. |
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eugenegill
join:2004-05-05
Greenville, SC
·Charter Pipeline
·VoicePulse
| reply to severach
said by severach :A Kilobyte can be 1000 or 1024." Not really true. See »en.wikipedia.org/wiki/Gibi#IEC_s···prefixes |
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