Chapter 4: BIOS System Fan Monitor Fan Speed Control Modules This feature allows the user to determine how the system will control the speed of the onboard fans. If the option is set to "3-pin fan", the fan speed is controlled based upon the CPU die temperature. When the CPU die temperature is higher, the fan speed will be higher as well. If the option is set to "4-pin", the fan speed will be controlled by the Thermal Management Settings pre-confi gured by the user with this setting. Select "3-pin" if your chassis came with 3-pin fan headers. Select "4-pin" if your chassis came with 4-pin fan headers. Select "Workstation" if your system is used as a Workstation.
Select "Server" if your system is used as a Server. Select "Disable" to disable the fan speed control function to allow the onboard fans to continuously run at full speed (12V). The options are 1) Dis- able, Full Speed 2) 3-pin (Server), 3) 3-pin (Workstation), 4) 4-pin (Server), 5) 4-pin (Workstation), 6) 4-pin (Quiet) and 7) 4-pin (Super Quiet). FAN1 Speed through FAN8 Speed The speeds of the onboard fans (in rpm) are displayed here. FAN7 is intended to be used for the CPU1 heatsink fan and FAN8 is intended to be used for the CPU2 heatsink fan. 4-4 PCI/PnP Menu Clear NVRAM Select Yes to clear NVRAM during boot-up. The options are Yes and No .
Plug & Play OS Select Yes to allow the OS to confi gure Plug & Play devices. (This is not required for system boot if your system has an OS that supports Plug & Play.) Select No to allow AMIBIOS to confi gure all devices in the system. PCI Latency Timer This option sets the latency of all PCI devices on the PCI bus. Select a value to set the PCI latency in PCI clock cycles. Options are 32, 64 , 96, 128, 160, 192, 224 and 248. 4-11