An interesting suggestion, considering that the first card has been working for a few months already before I installed it's sister. They are PNY 560's though there is a minor difference in designation. The older one is plain 560 as listed in the software. the second is listed as a 560 Ti. In all other respects they are the same except in timing, hence I had gotten the Afterburner, to tie them down to the same 810Mhz.
Anyways, I did take the older one out, as to be sure in this inquiry that the newer one is working, which it did. I had noted when I first installed the second one that there was a failiure to install the driver for the second card via Windows update because "the yadda-yadda was already in use". So, I drew both out temporarily and reseated both of them. The driver did then install. But that apparently wasn't the problem.
Another funny thing is, I've read that when an SLI is first booted up, one get an SLI bubble notifying the user that the system is now SLI. I've yet to see that.
In any event, the new one is now the master as opposed to the older one, since they've been switched. But I've still yet to have my games utilize the second GPU.