SSD Drive space

[Djinni]

Out of interest... exactly how much space does a 30gb, 60gb, 120gb, 240gb SSD actually have? (it's not usually a problem with hard-drives since well they're not so limited...)

Specifically looking at the Corsair Force series:

Corsair Force Series 3 60GB SSD Order Code: Manf. Code: CSR-F60GB3 CSSD-F60GB3-BK

Corsair

6 in stock

£99.98

Corsair Force Series 3 120GB SSD Order Code: Manf. Code: CSR-F120B3 CSSD-F120GB3-BK

Corsair

9 in stock

£168.98

Corsair Force Series 3 240GB SSD Order Code: Manf. Code: CSR-F240B3 CSSD-F240GB3-BK

Corsair

5 at Suppliers

£385.98

---------- Post added 2011-07-22 at 09:36 PM ----------

By this I mean actual available usable drive space.

[ispano]

Do the math? One gigabyte to a computer is 1,073,741,824 bytes, and obviously manufacturers use 1,000,000,000, so it's pretty simple to figure out from there.

As an example, my 60GB Vertex2 has 55.8 GB unformatted, 60,000,000,000/1,073,741,824=55.87

[haxartus]

Should be about 93% of the labeled size.

[Djinni]

Do the math? One gigabyte to a computer is 1,073,741,824 bytes, and obviously manufacturers use 1,000,000,000, so it's pretty simple to figure out from there.

As an example, my 60GB Vertex2 has 55.8 GB unformatted, 60,000,000,000/1,073,741,824=55.87

Someone was saying that "they have to allocate space to other things for drive operation" which doesn't sound like the marketing mob have "rounded" up.

[georgevonfranken]

I think my 120 has something like 111

[haxartus]

Just open the windows calculator and multiply the labeled size by 0.93.

[ispano]

Someone was saying that "they have to allocate space to other things for drive operation" which doesn't sound like the marketing mob have "rounded" up.

That's what they tell you, but formatting and partition tables take so little space it's not going to matter. Computers use base 2 numbering, we use base 10. Computers see 1024 as a kilo, we see 1000. So they just say that and people go "oh, ok"

[BicycleMafioso]

They will have 60, 120 and 240GB storage.
Or, 55.88, 111.76 and 223.52 GiB storage.

[Yohassakura]

Yeah, i'm sure it's just the difference between binary and denary... Though technically if you enable page filing and have system restore saves on your SSD, that'll take up space, which fits under "allocate space to other things for drive operation"... (You can easily knock page filing off at 16GB RAM... 8GB would be a bit risky though, and you can save system restores on a data HDD).

[ispano]

Those won't take away from the visible capacity though. If you have a 16GB Page File, you'll see 16GB more used than you would normally.

ie a 60GB drive won't show up as 44GB because you have a 16GB page file.

[Rondrer]

Someone was saying that "they have to allocate space to other things for drive operation" which doesn't sound like the marketing mob have "rounded" up.

Yeah, that's right, but it's already subtracted in the given capacities. The drives are actually bigger, but you can't use that extra space.

The 60GB drive has 64GB RAW Capacity, the 120GB has 128GB RAW the 240GB has 256GB RAW etc.

[ispano]

Yeah, that's right, but it's already subtracted in the given capacities. The drives are actually bigger, but you can't use that extra space.

The 60GB drive has 64GB RAW Capacity, the 120GB has 128GB RAW the 240GB has 256GB RAW etc.

Not quite. All drives have spare sectors, and SSDs tend to have quite a bit more to help with longevity and wear leveling. The discrepancy is exactly as I have said, they use base10 counting on the box and physical display, but actual capacity measured by the computer uses base2.

[Rondrer]

Not quite. All drives have spare sectors, and SSDs tend to have quite a bit more to help with longevity and wear leveling. The discrepancy is exactly as I have said, they use base10 counting on the box and physical display, but actual capacity measured by the computer uses base2.

just look at this product sheet: www .ocztechnology.com/res/manuals/OCZ_Vertex3_Product_sheet.pdf (the table at the bottom)

I know, these are different SSDs but they have the same controller (and thus the same "problem"). This has NOTHING to do with the base10 counting (which is of course also true).

[ispano]

just look at this product sheet: www .ocztechnology.com/res/manuals/OCZ_Vertex3_Product_sheet.pdf (the table at the bottom)

I know, these are different SSDs but they have the same controller (and thus the same "problem"). This has NOTHING to do with the base10 counting (which is of course also true).

http://www.tomshardware.com/reviews/...sd,2867-2.html

Like I said, all drives have spare sectors. My 60GB Vertex2 isn't 60GB in Windows, it's 55.8, which is due to base2 vs base10 counting.

[Djinni]

http://www.tomshardware.com/reviews/...sd,2867-2.html

Like I said, all drives have spare sectors. My 60GB Vertex2 isn't 60GB in Windows, it's 55.8, which is due to base2 vs base10 counting.

This is what I was after :-) the first two columns aren't too difficult to work out in your head its the "Windows Capacity" that is more of a stop and think.

[ispano]

Well the problem is that when OCZ switched the drives over, they messed up the numbering. The new ones still say 60GB but now give you even less than before. Aside from that case and maybe another special one or two, what I said is still pretty much true.

[Djinni]

I'm sort of looking at the

Corsair Force Series 3 120GB SSD Order Code: Manf. Code: CSR-F120B3 CSSD-F120GB3-BK

Corsair

9 in stock

£168.98

which is £1.04 per GB

but once its formatted and in use that rises to: £1.50

---------- Post added 2011-07-22 at 10:40 PM ----------

whereas the

Corsair Force Series 3 60GB SSD Order Code: Manf. Code: CSR-F60GB3 CSSD-F60GB3-BK

Corsair

6 in stock

£99.98

goes from:

£1.67 /gb to £1.96 /gb

[ispano]

oi, so long as you avoid the first two rows. That's the new revision of the same drive below it that OCZ released under the same UPC/Model/You name it. ie that's not typical. The bottom two are correct in math based on what the advertising for the drive states. It's simple to do the math based on the advertised size, just takes a calculator. For example, a 500GB standard drive. 500,000,000,000/1,073,741,824=465.661, which is how large a 500GB drive will show up to Windows as.

[Djinni]

sa calc? not si? where did "1,073,741,824" come from?

[ispano]

sa calc? not si? where did "1,073,741,824" come from?

"take sa" -> "takes a"

1,073,741,824 is exactly 1 gigabyte to a computer.