[mikester]

Really depends on what the wireless is. If it is an old 802.11b access point then that totally sucks. If it is something newer like and 802.11n access point then it probably won't be a noticeable difference.

If it is somewhere in between - like an 802.11g on 2.4 Ghz you might notice but if it is 5Ghz I doubt you'll notice. The Encrypt/Decrypt load probably isn't that high on your laptop to be honest because it isn't really doing very intensive encryption. If you were to look at transferring over a good IPSec VPN tunnel vs not - there you might see a difference. Intel processors - even the lower power mobile processors though are very powerful so even then I think it would be hard to notice.

Now, if it's an older single core or 32-bit machine - I still doubt the wireless encryption will hit it very hard but the IPSec VPN example might.