I've voted for this one, but maybe you could make the edges of the die at the middle of the 'O' a little squarer Jimbo? It looks a little bit strange compared to the sharp lines elsewhere on the logo.
The "CPU" just darkens it a bit too much, and it adds too much complication to an already busy logo. So if these are my only choices then I vote "Swish", even if it's not the greatest logo in the world, it's far better.