Yes, it is clear from the replies that one can have more security when giving up comfort and when one has more horse power.
But I don't want to do either!
I have a relatively old ThinkPad with a dual core T4500 @2,3GHZ and 4GB Ram 32bit Win7 system. It serves me fine and I have no plans to upgrade in the near future. Ironically I also have several Android devices, and my main ones all have quad cores
. More and more I work with Android and that's also why I am not really willing to invest too much into the Intel platform and have to think hard to even buy Sandboxie, since prices for Windows software are 10 times+ what they are for Android.
And I also like comfort and don't want to do this reboot thing all the time or have a system bogged down by VMs, drumming my fingertips until it starts and finally runs. My system has just enough speed for me as it is, less just will not work (you must know my notebook is a 14in. because I travel a lot I have weight restrictions).
It is also harder for me to analyze software in VMs, it is easier to do in a sandbox.