Windows has always been hardware intensive, on the mobile device and on the desktop.
I'm cranking this out on a laptop equipped with a 2GHz dual core Intel CPU and 4 GB of RAM. At times it feels quite pokey, especially compared to my X40 Thinkpad, with a 1.5GHz Centrino and 1.25GB of RAM running Ubuntu Intrepid.
My HTC 6800 was a beautiful piece of hardware, limited by an antique OS.
The sad part is that Microsoft has another, much more up-to-date OS laying around. It is called Zune.
Red BB Curve 8330m
v.4.5.138 (Platform 18.104.22.168)