Technical Support wrote:
It will not affect how the Einstein operates. However, there will be some display discrepancies between the E640 and the B1600. If you would rather, you could set the B1600 model lamp as a 250W bulb. Yes, they will both be inaccurate, but they will be equal in the CC as they are in actuality.
Got it. As I suspected, but I just wanted to make sure. I first tried turning the setting on the Einstein to 150W, but that dimmed the bulb, so I thought that was not OK. The 250W setting on the 1600 is an interesting idea. Thanks very much, Richard