Good point, v4.32 (i think) is Samsung b die and v5.39 is Hynix (what I have)
Sorry to be a pest @LumpyVR but you don't happen to know which version ram you're running?
Edit: sorry (again!) but xmp profile 2? I'm on bios F6 which looks to be the most up to date official bios and I only see 1 xmp profile. Is the other hidden away somewhere strange?!
It's not specified what version runs @ 3200Mhz http://download.gigabyte.us/FileList/Memory/mb_memory_ga-ax370-Gaming5.pdf