you can definitely try it.. everything has a free demo, so it can't hurt..
on that same board with 3-way active setup using some poorly coded x-over plugins, and rr, i would get audio drop-out's at almost anything above 30% cpu...
some recommendations for low cpu utilization-- try it using audiomulch, not console--when i used console, it seems to use more cpu with the same plugins (i only used console on that board because it was all i could afford at the time). the best filter program i have used so far is rubberfilter. it has relatively low cpu use, and a lot of features.
and instead of using A4A to try to get a ASIO setup, just try to use VAC to get the audio into the program, and stick with the windows drivers-- so the processor doesn't need to work any harder..