BT - 34mb on test, but 24mb wireless !

I've had the bottom grade BT fibre since Nov 16th and get 24mb down and 8mb up at my wireless laptop. I ran the 'proper' BT speed test and got the results below. I'm surprised by the large 10mb difference between the test and and the rate I get at the laptop. The BT hub is only 7m away through one internal brick wall, on the same floor. Maybe I should rework the cabling to get the BT hub nearer. Any comments?
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1. Best Effort Test: -provides background information.
Download Speed
34.07 Mbps

0 Mbps 0 Mbps
Max Achievable Speed

Download speed achieved during the test was - 34.07 Mbps
For your connection, the acceptable range of speeds is 12 Mbps-0 Mbps.
IP Profile for your line is - 38.72 Mbps

2. Upstream Test: -provides background information.
Upload Speed
8.48 Mbps

0 Mbps 10 Mbps
Max Achievable Speed

Upload speed achieved during the test was - 8.48Mbps
Additional Information:
Upstream Rate IP profile on your line is - 10 Mbps

Edited by clarkac (Mon 31-Dec-12 12:56:00)

Are you saying that you ran that test wired to the router? It seems likely from the rest of he post, but you don't say so.

more explanation required of what we're comparing with what - which other speed test and what modes of connection

Yes, the test was run wired exactly as specified by the BT test.
The test I ran at the laptop was using speedtest.net. I just run this wireless test standing 2m from the BT hub and got the same results - 24mb down and 8mb up. So moving the BT hub wouldn't help at all... I am intrigued by the significant difference between wired and wireless.

802.11g wireless tops out at about 22-25 Mbits/s of useful data for "54 Mbits/s" connection - what speed is shown for wireless connection on the operating system

In reply to a post by clarkac:

I am intrigued by the significant difference between wired and wireless.

I suspect your laptop has a Wireless G adaptor built in as 24meg is about as fast as wireless G can go (even though the advertising says 54 there are overheads in the way WiFi wireless works).

Your Ethernet connection will be 100megabit or faster, and there are almost no overheads so you can easily get 90 megabit given a fast enough computer and hard drive.

Your HomeHub 3 supports wireless-N which is needed to go faster.

Edited by jchamier (Mon 31-Dec-12 13:13:23)

My wireless is 'n' - Realtek RTL8191SE Wireless LAN 802.11n PCI-E NIC so it should be better.

W7 is showing a wireless speed that varies between 48mbps and 54mbps..

In reply to a post by clarkac:

W7 is showing a wireless speed that varies between 48mbps and 54mbps..

effectively in 802.11g mode then - consistent. Might be worth trying a channel change in case the HH has picked a naff one.

Tried a couple of channel changes, which only made matters worse. I guess the problem is my laptop's wireless which although running as 'n' is effectively stuck at 'g'. I have no idea why though.