For our performance test, we setup the wireless network using WPA2 + Personal option as this offers a considerable level of security with a slight speed tradeoff. As the router is DHCP capable, speeds and IP were auto-negotiated. The machines we used in our test, was an older COMPAQ NX9000 laptop and a standard assembled desktop. As the DIR-645 is a PCMCIA based card a slot that is not being offered actively by most manufacturers, we had to utilize an older laptop for purposes of this test.
For purposes of the test, we copied 2 700 MB video files, a collection of graphic files totaling 500 MB and a smattering of directories which totaled in at 2.2 GB. The results we got from our speed tests were mixed at best. Despite having run multiple speed tests, we only saw average speeds of 36-44 Mb. While this is a fairly decent speed boost it is no where the speeds that are promised with 802.11n. In our second round of tests, we tested the reach of the 802.11n router (set at 100 mW). Here the router fared considerably better. As compared to the reach of our Linksys WR54GS router, the router reached a great deal of distance more and held speeds more stably. At a rough distance of 20 meters the 802.11n router was nearly 2x faster.
At the end of our rather long session of testing, we reached the following conclusion. It is still a WIP and is not yet ready for primetime. On top of the mixed performance, the cost of the products are almost 4x-6x (prices listed at bottom), as compared to the more easily available 802.11g network products. Based on these factors, we suggest you give these products a miss and only go in for them if you want bragging rights.
The D-Link products are available for the following costs. The D-Link Range booster N650 Router DIR-635 is available for Rs. 9,950, the DWA-645 (laptop adapter) costs Rs. 7,100 and the the DWA-547(desktop adapter) is available for Rs. 7,950.
hahah, i have got one of those routers, its awesome man 
