I have an Asrock 890GM Pro3 R2.0 Mobo with UEFI bios. I am using Team Xtreem DDR3 1600 (PC3 12800) 7-9-7-24 ram.

In the bios the Ram defaults to DDR3-1333 but I am able to change this setting to DDR3-1600 from a pulldown list. This setting seems to remain in the bios after a reboot.

Once the Machine boots all reports (Asrock tuning utility, AMD overdrive, CPU-z) show that the ram is running at 667Mhz rather than the expected 800Mhz.

Is there something else I need to do to get it run at the faster speed?