there are few mobo to support step 2 cpu,only if you add the microcode to the bioscorrect, at taobao is a seller which pre-tests the QL2K(3175x) and/or can open them for TIM redo.
this suggests it works on many motherboards. but it don't work on all std.supermicro/Asus because the TDC and dont't work on ASRock/Gigabyte because of BIOS.