I have i5-4677k, GA-H87M-D3H mobo, 8 GB of RAM, AMD HD7870 GPU, and two disks - Sandisk Ultra Plus SSD (with OS) and WD 10EALX (which does not show up now).
My core temperatures are about 30C according tio HW Monitor. Both disks are 22C.
Two days ago, before my old SSD broke down, everything...