"Remember, what you see is not what you get. The box and marketing materials usually mention the maximum data rates and ranges for the wireless standards. The realistic values will be much less.
For example, you'll probably only get up to around 100Mbps of true throughput instead of the touted rates around 300Mbps. Windows also lies; it shows you the standardized data rates rather than the true values. You have to use other throughput testing programs to get a realistic value.
1. #1 Confirm that You're Using New Adapters
2. #2 Verify that Hardware is from the Same Manufacturer
3. #3 Use WPA2-AES Encryption Only
4. #4 Change Default Channel-width for High Speeds
5. #5 Disconnect Wireless G Clients for Best N Performance
6. #6 Use Only 40MHz-wide Channels with Strong Signals
7. #7 Check for interference"
Go read the full article (weblink near the top) to set your expectations properly if you want to achieve Wireless-N speeds.
Last edited by bbb_forever on Mon Jun 28, 2010 4:59; edited 14 times in total
"Interference from other 802.11n networks nearby can prevent a Wireless N router from sustaining channel bonded connections. In fact, some Wireless N routers automatically fall back to single channel operation when they detect wireless interference on the channels.
As with other networking standards, applications running on an 802.11n network will typically see substantially less actual bandwidth than the rated maximums imply even with channel bonding in place. A 300 Mbps rated 802.11n connection will often yield 200 Mbps or less of user data throughput."
Last edited by bbb_forever on Sat Jun 12, 2010 16:45; edited 4 times in total
"Real-world Speed of Wireless-G:
Specifically, 802.11g products, which have a theoretical maximum throughput speed of 54Mbit/sec., typically provide real-world speeds of 22Mbit/sec. to 24Mbit/sec.
Real-world Speed of Wireless-N:
In contrast, Intel says it's seeing real-world speeds of 100Mbit/sec. to 140Mbit/sec. for 802.11n equipment. Those results were confirmed in a recent Computerworld roundup review of several Wi-Fi products based on Draft 2 of the 802.11n standard.
[Note: I think this 100-140Mbps speed is from Enterprise-grade Wi-Fi routers, NOT FROM home-consumer-grade routers, which are usually way less than 100Mbps. -bbb_forever]
Range is harder to quantify because it's affected by many variables, such as barriers that could block the signal. However, Intel reports that 802.11n equipment typically delivers more than twice the range of 802.11g equipment, at any given throughput speed. Those results were confirmed anecdotally in the recent Computerworld review."
Last edited by bbb_forever on Sat Jun 12, 2010 16:46; edited 4 times in total
"An 802.11g network has a best-case useable bandwidth of around 25Mbps. 802.11n can move this up to anywhere between 50 and 100 Mbps. But if any 11g clients are also actively using the same radio on an 802.11n router, throughput for both will be reduced by more than half."