It should be fast enough to handle things like 720P video play back and desktop software like office and such. Still not sure way Dell didn't put video out in this thing, all of the other Windows 8 mini-tablets have micro HDMI. So if a digital pen isn't your thing but video out is, there are other options for the class of device.
Do you know when the Miix 8 and the Encore are supposed to be out? I'm getting antsy, especially after convincing myself not to pull the trigger on the Venue when it was ~$250 on Amazon the other day...