New Sandisk 256 MS PRO only has 224 megs available!

[Forest_Noggle]

Does this sound right to anyone?

My 256 CF has about 245+ megs for use.

The MS is too small to get one movie converted to a decent file size versus quality.

Feedback?

Thanks, Jay

[dannn]

supposed to do that.
do a search

[Forest_Noggle]

what do you mean?

Search for what?

[dannn]

there were a couple threads talking about this issue.
you should be able to find an explanation there.

[dannn]

there were a couple threads talking about this issue.
you should be able to find an explanation there.

[Dropzone]

my sony ms pro has 237.8 MB usuable space, but for the batches now, it come short of about 22x MB only.

[Unregistered]

take a chill pill. heck, the nz90 doesn't have 16mb. none of the m/s has the stated size. this is nothing new.

[???]

Originally posted by Dropzone
my sony ms pro has 237.8 MB usuable space, but for the batches now, it come short of about 22x MB only.

Same with mine:(
I have two MS with 237.8MB and 227MB.:confused:

[ricleo]

yup, these are the 2 most common usable space on MSPros, 237.8 and 227 MB. As Dropzone has mentioned, the 2 older mspros i have are both 237.8 while the later 2 I got had 227MB usable...

224MB sounds a tad worse :p

[cykalan]

my Sandisk 512Mb MS PRO Duo only have 468Mb Usable.... :(

[RD100]

The reason you have differences is because of how the binary math system works.

1 Kilobyte = 1,024 bytes .... not 1,000 bytes, as many people are led to believe.

 And 1 Megabyte = 1,048,576 bytes, not 1,000,000 bytes.

244  multiplied by 1,048,576  = 255,852,544   (or rounded = 256 million).

So 244 meg is the true amount of bytes in the memory card. Not 256 meg.

256 meg = 256 times 1,048,576 = 268,435,456 bytes.

So the memory card is really misinforming you when it says it is 256 meg.

It is really only 244 megabytes, in the true sense of the word "megabyte".

Although your memory card does have approximately 256 million bytes, it does not have 256 megabytes.

And the same holds true for the 512 meg card you mentioned, using similar binary math.

Here is an article which talks about this:

http://www.riva3d.com/kibibite.html

 

[cykalan]

what you didn't mention is that the FAT table of the file allocation system of your memory card also takes up space. that further explains why the usable memory is even less than the number you quoted.

[ricleo]

Yup. what you've mentioned about the binary math system has already been mentioned in previous threads too, but now, there are actually even discrepencies in usable memory between same sized memory sticks.

[SacKingsFan]

What a travesty.
(Computer math will always trick you)

[???]

I dont know much about the maths but why don't they make the sticks in the same way so we can have 237.8MB in all of them:mad:

[CopyCat]

there will always be discrepancies in memory. Its not as easy as you think to make each stick exactly the same size down to the last byte. For the most part nobody is being cheated out of anything, the makers of the sticks just aren’t clear on how they are numbering their sticks. As mentioned above memory is rated using SI Standards found here (http://physics.nist.gov/cuu/Units/binary.html). And windows uses 1,048,576 bytes as one MB.

Anywho this has been explained in other threads:) You are getting what you are supposed to.

[RD100]

Originally posted by CopyCat
And windows uses 1,048,576 bytes as one MB.
Anywho this has been explained in other threads:) You are getting what you are supposed to.

Actually, we are not getting the true amount of bytes which is labeled on card.

We are being cheated by the companies which produce the memory cards. Theoretically, we could sue them for false advertising.

If my card says it is 256MB, then I would expect to get 256 x 1,048,576 bytes.

Not 256 x 1,000,000 bytes.

I'm sure the companies which make these cards realize that 99.9% of the people which buy these cards don't know binary math, and therefore won't even realize they are being cheated.

[rlc7254]

Originally posted by foest_noggle
Does this sound right to anyone?

My 256 CF has about 245+ megs for use.

The MS is too small to get one movie converted to a decent file size versus quality.

Feedback?

Thanks, Jay

I have a 1gb MS Pro, it has 945mb available right out of the packing. It has to do with how the actual memory is calculated (bits vs. bytes, that type of thing). There doesn't sound like there is anything wrong with yours.

 :D

[ricleo]

We all understand that there will definitely be less than 256MB for use on the MSPro. it's just that he got only 224mb on his, I have 237.8MB available on both my MSpros.

237.8 vs 224 there's a descrepency isn't there? But just for the record, Sony actually mentions on their MSpro packaging that the user available memory is around 220MB, so i guess they aren't in the wrong.

[PBM808]

I just picked up a brand new lexar 256 msPro for $60. it has 238.6 megs . . . .

[PBM808]

Ok . . . . idk why, but i formatted it with windows explorer right click thing, and it went down to 237.5

[CopyCat]

Originally posted by RD100


Actually, we are not getting the true amount of bytes which is labeled on card.

We are being cheated by the companies which produce the memory cards. Theoretically, we could sue them for false advertising.

If my card says it is 256MB, then I would expect to get 256 x 1,048,576 bytes.

Not 256 x 1,000,000 bytes.

I'm sure the companies which make these cards realize that 99.9% of the people which buy these cards don't know binary math, and therefore won't even realize they are being cheated.

You could not be more wrong.
Hard Disk makers have been using this system for many years. If you want to get really technical about it fine.
1,000,000 bytes = 1 megabyte and 1,048,576 bytes = 1 mebibyte.
It is actually windows that has the numbering wrong in technical terms. The hard disk makers (hard drives, flash memory, ram etc...) are telling you what you are getting, windows is confusing everyone. So should we sue all memory makers?

If you want to brush up on your information feel free to read this (which I posted above):
http://physics.nist.gov/cuu/Units/binary.html

Thank You:D