Re: Two computers, different download speeds.
- From: "Dr Who" <dead_letter_office@xxxxxxxxxxx>
- Date: 5 Feb 2011 08:13:32 +1000
"Dr Who" <dead_letter_office@xxxxxxxxxxx> wrote in message
Char Jackson wrote:
On Thu, 3 Feb 2011 07:12:03 -0600, "amdx" <amdx@xxxxxxxxxxx> wrote:
I have two computers setting next to each other and
connected the same, as far as I know.
(I think all connectors on the router are the same speed)
The first one an HP m495c has a 3.2 Ghz clock speed.
Using >speedtest.net< it has a download speed of,
The second is a Dell GX 260 and has a 2.8 Ghz clock speed.
It has a download speed of,
I'm using Firefox, both computers are hardwired to a linksys 54G
router, and an Arris CM550A modem.
Why is the Dell so slow, (other than it is a Dell)?
What can I do to speed up the download speed.
On a good day, Internet speed tests are unreliable because they
use such a small chunk of data with which to test. You're really
getting the tiniest snapshot there.
Instead, if you have a third data source on the LAN, I would
download a large file from there, first by one computer and then
by the second computer. Since the end to end path is within the
LAN, it removes all of the unknowns and inconsistencies of the
Internet connection, which will be identical for both computers.
During the download, watch the throughput of the download in real
time. Does it repeatedly burst, pause, burst, or does it go to a
certain speed and generally stay there? If you use a Windows OS
that's less than 10 years old, you can see your real time network
activity on the Networking tab in Taskmanager, or you can install
a small utility to do the same, such as DUMeter or Bandwidth
Monitor or a free program that is a clone of those, but I forgot
the name of.
Alternatively, check out Iperf or Jperf, a couple of benchmarking
utilities. Again, keep the testing within the LAN, if possible,
even if you have to use the two computers as a source for the
Assuming your LAN testing continues to indicate one being faster
than the other, check out your NIC settings (negotiated
connection speed, duplex settings, frame size, etc.). I don't
think the CPU differences are to blame here, but you can see what
the CPUs are doing by watching them in Taskmanager during a large
I notice you have Avast as the anti-virus.
Great program, but I strongly suggest you turn off network filtering
(and any other non essential filters) on the low powered Dell.
Avast (particularly The network filter) will DEFINITELY slow down my
oldish Compaq 2200 notebook.
I recon this is your problem.
Interesting, I disabled Avast and the download speed more than
doubled into the 8 to 10 Mb/s range verses high 3s before.
When I disabled Avast on the faster HP computer it did not increase
the speed. 12Mb/s may be near the max the cable system provides.
The problem is that the processor on the Dell just doesn't have enough
capacity to examine the data without slowing down the through put rate.
I found that Avira is better as an alternative in this respect, but it
increases boot times massively.
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