I7-4770 with 32 gbs of DDR3 memory and GTX 750ti 4gb. Windows Home 10 64 bit. Bootup drive is a Samsung 500gb SSD. Has multiple mechanical drives for data (Sata2, Sata3 & USB 3.0).

I've also tried the same auto retopo on my i5-2500K with 16 gbs and the process is the same. Very slow. Anyone interested can download my free Gunship model here at Renderosity and try an auto retopo on it... It's a very dense model. I gave up on an auto retopo and uploaded the sense model here....

https://www.renderosity.com/mod/freestuff/pain-merchant/70418