How many MB do you download a second on a 10MB line?

NeVeR · 23-09-2008 09:47AM #1

Hi

Just wondering what you download a second on a 10MB line if you are at MAX download speed. Is it 1MB/Second?

So if you download 20gig at max speed from start to finish it would take

1GB = 1024MB

So would it be 1024mb / 60 seconds = 17min 7second a gig x 20GB = 6 hours 42 mins and 3 seconds ?

Am i right in that,, or does a 10MB line download at about 1.1MB/s or 1.2MB/s?

Snaga · 23-09-2008 09:54AM

You mean a 10Mb line (note the small b).

Data transfer rates are _always_ measured in bits per second, not bytes (as data that has been stored on a hard drive would be).

So a 10Mbit per second line will give you 1.25MBytes per second theoretically (8 bits in a byte). However protocol overhead (TCP or UDP) will eat into this by about 3-5% - so in reality you will see about 1.2MBytes/second at its absolute best.

lynchie · 23-09-2008 09:56AM

Assuming you discount the overheads a 10MB (~80Mbit) line will download at 10MB/s.

On the other hand if you meant a 10Mbit line then discounting overheads it will download at ~1.25MB/s

seamus · 23-09-2008 10:01AM

It's hard to give an exact figure because it can also depend on what type of traffic you're accessing to determine how many bits it takes to transmist a byte. Control and error-checking bits add an overhead, but you'll never be able to say exactly. A general rough guideline for network speeds is 10bits to a byte.

Also in terms of networks = 10Mbit = 10,000,000 bits/sec. So If you take the rule of ten above, then that's 1,000,000 bytes/sec, or around 679.56 KB/sec, which is 0.954 MB/sec.

If you ignore overheads and say that one byte = 8 bits, then 10Mbit = 1.19 MBytes/sec. If you're getting a download speed between 0.9 and 1.2 MB/sec, then that's normal.

NeVeR · 23-09-2008 10:14AM

Sorry i did mean 10Mbit,, I'm on the NTL 10mb line,

taken all in,, Would i be close with my maths ?. If you where downloading at FULL speed with no breaks, Now i know that might not happen. But i'm just wondering if it could happen would i be close,

seamus · 23-09-2008 10:25AM

Depends.
If you take my figures, then the longest it will take is around 21467.5 secs ~= 5 hours, 58 minutes.

The shortest it might take is 17210 secs ~= 4 hours, 47 minutes.

NeVeR · 23-09-2008 10:35AM

great,

Thanks

zAbbo · 23-09-2008 10:37AM

I usually max my 10Mb line at around 1100kb/s

Hmmm pure leech too

How many MB do you download a second on a 10MB line?

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