IBM EP-8KTA - Manual (Page 47)

BIOS
EP-8KTA
Page 4-21
4-8 Frequency/Voltage Control
DRAM Clock : The item will synchronize/asynchronize DRAM operation clock.
Host Clock: DRAM has same working clock with CPU host bus.
2/3 Host: DRAM running with lower operation clock.
Auto Detect DIMM/PCI Clk: When enabled the motherboard will automatically
disable the clock source for a DIMM socket which does not have a module in it.
Same applies for PCI slots. The default is Enabled.
Enabled: Enables this option.
Disabled: Disables this option.
CPU Host/PCI/Spread Spec. : Allows the external clock to be modified
depending upon what FSB has been selected. Should not be used to clock proces-
sor faster than it was designed for. The default is Default.