Enabling this feature in BIOS sets a minimum frequency at which all cores will run independend on their states. The function is designed to improve IO performance and remote socket performance. Setting a higher floor will increase power costs. The switch in the Fujitsu BIOS sets the floor equal to maximum frequency.

Hyper-Threading Technology = Disabled

Disabling Intel's Hyper-Threading Technology reduces the number of threads per core to 1. The default is Enabled; in this case each core provides additional resources for executing up to 2 threads in parallel.