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Solved Is 3.0 mbps = to 300 kbps Dowload?

September 14, 2005 at 17:30:53
Specs: Windows Xp Pro x64, Amd sempron 3000+

Ok, so I think I'm wrong in my thinking, my current connection is 3.0Mbps/768Mbps, and I just cant seem to find a straight answer of whether the download speed should thus be 3.0 mbps or does that translate to about 300kb/sec I get when downloading? I think I'm confused because of hearing about other speeds, such as 768/128 does that then mean there connection would download at about 76kb/sec or 768kb/sec? My max download is usually about 350kb/sec so just wondering if somebody could finally get me out of the dark here. Don't want to be wasting any of my connection speed. Hate sounding like such a newbie but eh, we all learned somewhere.

Windows Xp Pro x64
AMD Sempron 3000+ 1.8ghz
768 mb Ram pc2700
Nforce 4 Motherboard
Radeon X700 256mb
Realtek Ac 97 Onboard Audio
Thermaltake 430W Power Supply


Windows Xp Pro x64
AMD Sempron 3000+ 1.8ghz
768 mb Ram pc2700
Nforce 4 Motherboard
Radeon X700 256mb
Realtek Ac 97 Onboard Audio
Thermaltake 430W Power Supply


See More: Is 3.0 mbps = to 300 kbps Dowload?

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#1
September 14, 2005 at 20:20:20
✔ Best Answer

It does get confusing because what we are talking about is bits per second and bytes per second. There is no official designation, but generally speaking when it Bytes it an Upper case B and bits is a lower case b - but be aware that is not always the case.

You can take it then when it is talking about data transfer over a network or the Internet it is talking about bits per second. Bytes per second is usually referred to when talking about data transfer between storage devices like hard disk and CD/DVD drives.

So 300 k bits ps is equal to 0.3 m bits per second. Kilo is always a lower case k. Thats an an official ISO designation, while mega is a upper rcase m. Kelvin gets the upper case K 1000 k bits ps is equal to 1 Mega bits ps.

768/128 would mean 768 k bits ps download and 128 k bits ps upload.

350 k bits per second is a bit on the slow slide for ADSL, but that depends what you nominal speed is as the actual speed can vary depending on the load on the network.

Stuart

message edited by StuartS


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#2
September 15, 2005 at 10:58:46

To add...
There are 8 bits to a byte.
So 3mbps is equivilent to 3,000,000 divided by 8 or 375,000 bps or 375Kbps.

The 3mbps is the 'advertised' rate and if you were to ask the promoter they would say that means "up to" 3mbps.

I have, on occaision, exceeded the advertised rate.

HTH
Bryan


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#3
September 15, 2005 at 11:00:45

Correcting 375,000 bps or 375Kbps to read 375,000 Bps or 375KBps

Bryan


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Related Solutions

#4
September 15, 2005 at 18:25:04

Thanks for clearing that up, so my speeds are actually normal, how sad, guess I was hoping 3 mb per second meant downloading files at 3 mb per second, man I know that I have to read up on my bits and bytes.

Windows Xp Pro x64
AMD Sempron 3000+ 1.8ghz
768 mb Ram pc2700
Nforce 4 Motherboard
Radeon X700 256mb
Realtek Ac 97 Onboard Audio
Thermaltake 430W Power Supply


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#5
September 16, 2005 at 04:33:10

A good test is to download the 15.5 mega byte file from Sun Java. It is the second download button.

I have a 4MB Cable connection and it downloaded in 21 seconds. After it completed the download dialog box showed that the average download speed was 757KBps (6.056mbps) and this is the fastest download I have ever received.

I tried this test this morning because I had, for specific reasons, downloaded it at work a couple of days ago and got 630KBps and was amazed. Sun's server is serving it up.

Regards,
Bryan


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#6
September 16, 2005 at 05:14:50

Comcast Cable must have jacked up the service from 4MB to 6MB.

I tested at BandwidthPlace.com with the following results:

6.4 megabits per second

Communications 6.4 megabits per second
Storage 776.3 kilobytes per second
1MB file download 1.3 seconds
Subjective rating Awesome

Bryan


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#7
October 22, 2005 at 17:55:47

Quote from Bryan: "There are 8 bits to a byte.
So 3 mbps is equivilent to 3,000,000 divided by 8 or [375,000 Bps or 375 KBps]."

But you have to divide by 1,024 to go from Bytes to KiloBytes, because PCs use base-2.

See http://lyberty.com/encyc/articles/kb_kilobytes.html

So for the question "3.0Mbps/768Mbps ..translate to about 300kb/sec I get when downloading?"
the answer is:

3.0/768 means 3000/768, which means 3000 kilobits per second (kbps) Download (maximum), and 768 kilobits per second (mbps) Upload (maximum).

Most connections will give you about 80% of your maximum; so that would translate to
about 2400 kbps down/ 615 kbps up.

To translate to practical file transfer speeds:
2400 kbps = 2,400,000 bits
2,400,000 bits / 8 = 300,000 Bytes
300,000 Bytes / 1,024 = 293 KiloBytes

So your download speed (at 80% of maximum)
should be around 293 KiloBytes per second,
or "293 KB/s".

The maximum of 3.0 mbps is equal to:
((3*1,000,000)/8)/1024 = 366 KB/s

Another good speed tester (compare to others in your area): http://www.broadbandreports.com


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#8
October 23, 2005 at 07:15:35

Agreed...366 vs 375.

Bryan


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