Thanks whiteogre! - pretty much what I thought. I have purchased 2 so far and still learning about crypto stuff. I know efforts, as mentioned by jstefanop, to bring full node to Apollo. I understand what that means but not sure how that would impact mining. For example, it seems like less network latency time would be realized so there should be less stale shares. Just guessing.

I did put a usb fan in front of each which helps as they purr perfectly in balance mode.