We used PerformanceTest 6.1 by PassMark which you can find out more information about here. It has a handy Advanced Networking section which is perfect for our testing.
Doing our best to emulate a real-world performance scenario, I setup a server running Windows 2008 R2 (x64) Server, (2x Xeon Quad Core 3.0 GHz 1333MHz FSB, 4GB DDR2 FB-DIMMS, 2x 146GB SAS drives in RAID 1) and the client PC was an MSI Wind 200 with built-in Intel 802.11n (Intel WiFi Link 5100 AGN) adapter.
The results were gathered by sending data from the MSI netbook to the server at different distances with the built-in adapter, a TPLink TL-WN821N and then a TRENDnet TEW-644UB adapter. Average transmission speeds were recorded for each.
The connection speeds are about what you would expect from an N spec router running AES encryption. We saw them stay right around 120-150Mbps with a major drop down to 60Mbps when we hit the edge of the stable range. We found our optimal range (including outside) was right around 60 Feet. At this distance the connection speed dropped well below 100Mbps and the connection seemed a little spotty.
For bandwidth we found the ASUS RT-N16 to run fairly well. With its three antennas even with signal disruption from the electrical panel and the wet wall we still managed more than acceptable speeds.
The problem with testing ping times and gaming performance is that even using the same server multiple times you can get different results. To help alleviate this we tested the RT-N16 at four time intervals. The first was on Friday at 8PM EST (US Eastern time), the next was on Saturday at 12Noon EST, then again at 4PM, and the final was at 9am on Sunday. We took the pings registered and created an average of them to see where we were in general.
The RT-N16 did well with average to low pings and very good response to what was going on in the games we played. It certainly would not slow your gaming performance any if you chose to drop it in your system.
As we mentioned earlier in our review, we attached a Seagate FreeAgent 1TB drive to the RT-N16. We then streamed a couple of different movies to both a PC running Windows 7 x64 Media Center (wireless) and then to the Seagate FreeAgent Theater + (wired). Both had no problems picking up the video and audio information, even when run concurrently.