I bought the SP2 the day it was released with the i5, 256gb, and 8gb of ram and never had it overheat and shutdown. I've owned the SP3 for a little over a day and I just had it overheat on my and shut down. I was downloading Command and Conquer 3 from Origin, and playing Asphalt 7 on the metro side. Maybe I'm asking too much of it? I didn't think that was too much for it by any means, I have run photoshop, point of sale, eagle browser, and editing my website, all while having as many tabs open in Chrome as anyone would ever need to have open on the SP2.