• Congratulations to the Class of 2024 on your results!
    Let us know how you went here
    Got a question about your uni preferences? Ask us here

>10Mbps on Optus Cable? (1 Viewer)

~ ReNcH ~

!<-- ?(°«°)? -->!
Joined
Sep 12, 2004
Messages
2,493
Location
/**North Shore**\
Gender
Male
HSC
2005
nick1048 said:
how can u tell if it's real of caching when the file your downloading is less than your download rate...
The most accurate way to measure your download speed is to dig out a stopwatch and to time it manually :)
 

sunny

meh.
Joined
Jul 7, 2002
Messages
5,350
Gender
Male
HSC
2002
nick1048 said:
how can u tell if it's real of caching when the file your downloading is less than your download rate...
You can't really, unless you examine the HTTP headers if that is what you are using.

~ ReNcH ~ said:
Not sure...but it's not even possible at 2am is it?? ... when there's absolutely no traffic and no contention?
I have a feeling that the download had already started before he pressed "start", inflating the speed. If not, the file was probably already cached.
Its unlikely to me any cable connection can achieve that sort of speed (sustained). 10Mbps line is a 10Mbps line. And you're right, when you use browsers to download something, it has already begun downloading when you are selecting where to save the file. That is why downloads seem quicker at the start since the download rate calculation is just bytes downloaded / time, and since part of the file was already downloaded when you were selecting where to save the file to, the rate seems higher at the start.
 

~ ReNcH ~

!<-- ?(°«°)? -->!
Joined
Sep 12, 2004
Messages
2,493
Location
/**North Shore**\
Gender
Male
HSC
2005
nick1048 said:
I was referring to the 3mb one.
Oh...I don't think 3MB/s is possible either...unless it's on 24Mbps ADSL2+, but even 3MB/s is very unlikely, if not impossible.
 

~ ReNcH ~

!<-- ?(°«°)? -->!
Joined
Sep 12, 2004
Messages
2,493
Location
/**North Shore**\
Gender
Male
HSC
2005
sunny said:
You can't really, unless you examine the HTTP headers if that is what you are using.


Its unlikely to me any cable connection can achieve that sort of speed (sustained). 10Mbps line is a 10Mbps line. And you're right, when you use browsers to download something, it has already begun downloading when you are selecting where to save the file. That is why downloads seem quicker at the start since the download rate calculation is just bytes downloaded / time, and since part of the file was already downloaded when you were selecting where to save the file to, the rate seems higher at the start.
Not to mention that the 10Mbps line is shared.
 

AsyLum

Premium Member
Joined
Nov 13, 2002
Messages
15,899
Gender
Undisclosed
HSC
N/A
haha 2am? Thats the busiest time my dear friend :)

*points to schedules and yes data*
 

~ ReNcH ~

!<-- ?(°«°)? -->!
Joined
Sep 12, 2004
Messages
2,493
Location
/**North Shore**\
Gender
Male
HSC
2005
AsyLum said:
haha 2am? Thats the busiest time my dear friend :)

*points to schedules and yes data*
I suppose so, since everyone's downloading while they sleep...but that just makes it all the more unlikely that anyone can get 3MB/s on cable.
 

sunny

meh.
Joined
Jul 7, 2002
Messages
5,350
Gender
Male
HSC
2002
nick1048 said:
I was referring to the 3mb one.
Lets consider the connection between the cable modem and the computer. Its either 10Mbps ethernet or 12Mbps USB. Both these connections only offer ~1MB as a theoretical maximum - its simply not possible to shove 3MB/s down them.
 

Mumma

Member
Joined
May 19, 2004
Messages
586
Location
Sydney
Gender
Male
HSC
2006
10megabits per second is maximum. divided by 8, that is 1.25 megabytes per second. Your friend came nowhere near 3.
 

~ ReNcH ~

!<-- ?(°«°)? -->!
Joined
Sep 12, 2004
Messages
2,493
Location
/**North Shore**\
Gender
Male
HSC
2005
sunny said:
Lets consider the connection between the cable modem and the computer. Its either 10Mbps ethernet or 12Mbps USB. Both these connections only offer ~1MB as a theoretical maximum - its simply not possible to shove 3MB/s down them.
Can you get 12Mbps if you connect the modem via USB? (as opposed to 10Mbps on Ethernet)...I don't have cable though.
 

MedNez

:o>---<
Joined
Aug 21, 2004
Messages
3,004
Gender
Male
HSC
N/A
For people unsure of how to relate the different connections and their speeds, this is a good example.
 

sunny

meh.
Joined
Jul 7, 2002
Messages
5,350
Gender
Male
HSC
2002
~ ReNcH ~ said:
Can you get 12Mbps if you connect the modem via USB? (as opposed to 10Mbps on Ethernet)...I don't have cable though.
No, because the cable network speed is 10Mbps anyway. Plus, 12Mbps for USB is a theoretical maximum, it doesn't reach that in practice.
 

AntiHyper

Revered Member
Joined
Sep 16, 2004
Messages
1,102
Location
Tichondrius
Gender
Male
HSC
2005
look.. if you have cable most probably you'd be connecting your ethernet port to the cable modem. This on its own has a max transfer rate of 12.5MBps since ethernet's bandwidth is 100 Megabits. While for ADSL.. I've only known them to connect through USB port. USB only have 11 Megabits for bandwidth (except USB 2) which translates as 1.375MBps. So i'm sure you cannot reach speeds of 3MBps on adsl.
prove me wrong
EDIT: Yes there is the new 1 Gigabit ethernet connection which said above can reach speeds of 125MBps. BUT this is when using ALL bands available for downstream, you always need some upstream to communicate with the server.
 
Last edited:

sunny

meh.
Joined
Jul 7, 2002
Messages
5,350
Gender
Male
HSC
2002
AntiHyper said:
So i'm sure you cannot reach speeds of 3MBps on adsl.
prove me wrong
I think we all reached that conclusion two days ago.
 

Users Who Are Viewing This Thread (Users: 0, Guests: 1)

Top