Various sources say Intel SST should be enabled on Windows 10 either from the BIOS (on W10 versions before Anniversary), or automatically from W10 on all Skylake processors starting from the Anniversary update. Another source says it only supports mobile Skylake processors. I have a i7-6700HQ (mobile) and HWiNFO reports SST as disabled still on 15063 and 14393. Under Linux (Fedora 25 and Ubuntu 17.04), SST seems to work fine. Reading the MSR 0x770 reports 1 for all cores out-the-box.