We have the same bios version.
I have corsair RAM
Handle 0x003B, DMI type 17, 40 bytes
Memory Device
         Array Handle: 0x0032
         Error Information Handle: 0x003A
         Total Width: 64 bits
         Data Width: 64 bits
         Size: 16384 MB
         Form Factor: DIMM
         Set: None
         Locator: DIMM_A2
         Bank Locator: BANK 1
         Type: <OUT OF SPEC>
         Type Detail: Synchronous Unbuffered (Unregistered)
         Speed: 2666 MHz
         Manufacturer: Unknown
         Serial Number: 00000000
         Asset Tag: Not Specified
         Part Number: CMK32GX4M2A2666C16
         Rank: 2
         Configured Clock Speed: 1333 MHz
         Minimum voltage:  1.200 V
         Maximum voltage:  1.200 V
         Configured voltage:  1.200 V
I just double checked and amdtemp isn't working correctly.  I was 
probably thinking of my other system which has an FX 8350.
Luke
Out of interest, is there anyone out there running Ryzen who *hasnt* seen lockups ? I'd be curious if there a lot of lurkers thinking "mine works fine" To be honest this thread has put me off building my machine, the pile of boxes with motherboard, case, cpu and ram is still sitting next to me desk at work! -pete.