noise profile changed vs older models? Any design/part change with regards to the power supply and CPU cooler versus older models? Are they quite under full load. Quite in the sense of a whisper like steady whoosh. Instead of the annoying whine older ones have. With a 750ti, i7-4790, 32GBs ram and one SSD in older one, running VMs or light gaming makes them quiet annoying when CPU/PSU fans kick in. Otherwise it has a killer feature, 4 DIMM slots, that you cant get in mini-ITX sized builds.

this one looks just like the old shuttle xpc's. the one i'm talking about was in the AMD athlon XP 2400+ generation

"The H170 chipset uses vert strick Turbo multipliers. For Z170 the manufacturers often tweak that multiplier a bit, which explains the overall performance increase." Never heard that statement before, and never heard the words "vert strick Turbo multipliers" before. Can someone explain? Does that mean, against common belief, the chipset makes a significant difference in % of CPU-performance?