I installed a few graphic crunching games to see how it went.....very smooth
The 7 inch unit means I can use it for navigation in my truck and have found the google nav better than the tom tom (which cost more by the way)...I might add here that google nav knows where the destination is better than any other but is still a bit weak in getting there.
As a commercial driver who also designs software, I can slip between navigation/email/the web/server status and my online books without any delay.
Downside is that I have to keep it on the net by connecting to my phone (Wireless Access Point)...one day I forgot my phone.....the world stopped.
I found the 7 inch would be as big as I could go for the portability I need in my daily schedule.