Yes just to add that if the laptop never reports a wireless data rate above 65Mbps (or 72Mbps) it may be the OP laptop has a single antenna type (those are the maximum rates for single antenna in 'n' for long (or short) guard intervals respectively).
That would tally with upgrades to the router not improving things.
In that case while going from 20MHz channel width to 40MHz could
increase the data rate to 135Mbps (150Mbps) but I'd normally strongly advise against that until a scan is done to see what is around
- 40Mhz can be a pretty greedy use spanning 7 or worse of the 13 channels (only try if it can be set it to use 1+3 or 11+13 else it wipes out most of the band if there are any surrounding networks
- if one has any legacy devices that are confused by 40MHz channels
But it may be better to get a USB or other add-on adapter with dual antennas. If doing that it is well worth spending a little extra on the a/b/g/n with full support for both 2.4GHz and 5GHz bands.
As per other posters, to reiterate the the reported rates should be regarded as half-duplex signalling rates, including various overheads, so you do well to get ~ 1/3 of the reported figure in each direction.
prompt $P - Invalid drive specification - Abort, Retry, Fail? $G
prlzx on n e w n e t: ADSL2+ / 21CN at 2.5Mbps / 800k
Edited by prlzx (Sun 16-Oct-11 00:05:25)