To clarify temps true idle with displays asleep is ~50* but as soon as I do anything (broswe files, chech fb, basic level stuff with GPU usage less then 10%) it jumps to 81 and more intensive stuff (watching videos...) it climbs from there. The fan is spinning and I readjusted a case fan to blow on it and that did bring the normal usage temps down into the 70's so some imporvement there.
I realize that the CUDA only works on some render types and plug ins. My issue was just in trying to preview the project while working without it severely lagging. I guess what I'm trying to determine is the limited CUDA boosting worth the loss in net GPU speed.