Throughput of Intel 4965AGN under WiFi N 300mbps?

Hi All

I'm interested in what throughput people are getting with their 4965AGN cards using Wireless N where the router is set to support 300 mbps (i.e. 40 Mhz bandwidth).

Even with this setup and within 10 feet of the router I can't get above 10MBps which is lower then I would expect for a 300mbps connection.

I realise WiFi can be affected by a wide range of factors but I'm just interested in trying to collect some data.

If you could put your throughput, what OS you're using, what router and the approximate distance to the router and if you're in a rural or built up area.

Thanks in advance.

 

3megabytes/second (24mbit) actual throughput pretty much across the entire range of reception from a wrt54gl here with my i4965a/g/draft-n.

OS is dd-wrt v24 on the router, and Windows7 on the client.

Rural area. 802.11g.

 

Just to be clear, you're just measuring the router to your machine right? Not your ISP speed?

 

Yep just to the router.

I'm copying a 4gb file from another machine internally to see the throughput so there's no Internet impact on the transfer.

 

10MB/s is actually very good for 300mbps. It's 80mbps which is as close to 100mbps Ethernet as it gets and off course Ethernet is still faster than Wi-Fi.
See here for max uplink and downlink throughput achieved on 2.4GHz band 40MHz channel on different routers- mind you average throughput is going to be lower than that.

 

Hi

I've been doing the test in the 5Ghz band.

You lost me a little in your explanation,

a wired 100Base-TX (i.e. Normal Wired Ethernet) gives a theoretical maximum transfer rate of 100 Mbit/s and that gives me 10-11 MB/s of thoughput easily.

Wireless N giving a 300 Mbit/s connection therefore is theoretically 3 times the throughput. I realise due to overhead it will not give me 30 MB/s but I was hoping for 15-18 MB/s, therefore getting a maximum of 10 MB/s is a little disappointing.

My Wired Gigabit segments have given me throughput of 60 MB/s.

 

The thing is 300mbps Wi-Fi is not as fast as 100mbps Ethernet- while it may achieve this kind of speed from time to time under best possible conditions it's not able to achieve an average speeds close to this of the Ethernet.
Here are the downlink and uplink speed graphs for 2.4GHz 802.11n 40MHz channel from one of the fastest and the best wireless routers available today- Netgear WNDR3700.
Note that although in both cases (uplink and downlink) an average speed is close to 90mbps it's only for location A- which is 6 feet away from the router.
Testing methods are here.
All in all locations B and C represent more realistic situation. You should be very pleased with your wireless performance.

There's no difference in throughput between 2.4GHz and 5GHz band- 2.4GHz may be overcrowded which will limit performance but 5GHz is not as good in penetrating walls and other obstacles sothe range is shorter and the max speed will fades away sooner. The smallnetbuilder tests are free of 2.4GHz crowd/interference so this band scored better- that's why I used it as an example.