User manual MSI G31M V2.0

[. . . ] G31M Series MS-7379 ( V2. X ) Mainboard G52-73791X1 i Copyright Notice T he material in this doc ument is the intellec tual property of M ICRO-STAR INTERNATIONAL. We take every care in the preparation of this document, but no guarantee is given as to the correctness of its contents. Our products are under continual improvement and we reserve the right to make changes without notice. Trademarks All trademarks are the properties of their respective owners. NVIDIA, the NVIDIA logo, DualNet, and nForce are registered trademarks or trademarks of NVIDIA Corporation in the United States and/or other countries. [. . . ] W hen set to higher values, every PCI device can conduct transactions for a longer time and thus improve the effective PCI bandwidth. For better PCI performance, you should set the item to higher values. 3-18 BIOS Setup IRQ Resource Setup Press <Enter> to enter the sub-menu and the following screen appears. IRQ 3/4/5/7/9/10/11/14/15 These items specify the bus where the specified IRQ line is used. The settings determine if AMIBIOS should remove an IRQ from the pool of available IRQs passed to devices that are configurable by the system BIOS. The available IRQ pool is determined by reading the ESCD NVRAM. If more IRQs must be removed from the IRQ pool, the end user can use these settings to reserve the IRQ by assigning an [Reserved] setting to it. All IRQs used by onboard I/O are configured as [Available]. If all IRQs are set to [Reserved], and IRQ 14/15 are allocated to the onboard PCI IDE, IRQ 9 will still be available for PCI and PnP devices. Important IRQ (Interrupt Request) lines are system resources allocated to I/O devices. When an I/O device needs to gain attention of the operating system, it signals this by causing an IRQ to occur. After receiving the signal, when the operating system is ready, the system will interrupt itself and perform the service required by the I/O device. 3-19 M S-7379 M ainboard H/W Monitor Chassis Intrusion The field enables or disables the feature of recording the chassis intrusion status and issuing a warning message if the chassis is once opened. To clear the warning message, set the field to [Reset]. The setting of the field will automatically return to [Enabled] later. CPU/SYS Smart FAN Target The mainboard provides the Smart Fan function which can control the CPU/System fan speed automatically depending on the current temperature to keep it with in a specific range. If the current CPU/System fan temperature reaches to the target value, the smart fan function will be activated. It provides several sections to speed up for cooling down automaticlly . CPU Min. FAN Speed (%) This field is used to set the minimum CPU fan speed. PC Health Status CPU/ System Temperature, CPU FAN/ SYS FAN1 Speed, CPU Vcore, 3. 3V, 5V, 12V, 3VSB These items display the current status of all of the monitored hardware devices/ components such as CPU voltage, temperatures and all fans' speeds. 3-20 BIOS Setup Frequency/Voltage Control Important Change these settings only if you are familiar with the chipset. Current CPU / DRAM Frequency These items show the current clocks of CPU and Memory speed. Intel EIST The Enhanced Intel SpeedStep technology allows you to set the performance level of the microprocessor whether the computer is running on battery or AC power. This field will appear after you installed the CPU which support speedstep technology. Adjust CPU FSB Frequency This item allows you to select the CPU Front Side Bus clock frequency (in MHz). Adjust CPU Ratio This item allows you to set the CPU ratio. [. . . ] Please note that the existing data on the selected hard drive(s) will be deleted permanently. Do not forget to back up all the important data before continuing. C-19 M S-7379 M ainboard (4) Specify Volume Size Specify the amount of available array space to be used by the new RAID volume. You may enter the amount in the space or use the slider to specify. It is recommended you use 100% of the available space for the optimized usage. [. . . ]