User manual MSI MS-6712 VERSION 1.X

[. . . ] KT4AV MS-6712 (v1. X) ATX Mainboard G52-M6712XJ i FCC-B Radio Frequency Interference Statement This equipment has been tested and found to comply with the limits for a class B digital device, pursuant to part 15 of the FCC rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instruction manual, may cause harmful interference to radio communications. Operation of this equipment in a residential area is likely to cause harmful interference, in which case the user will be required to correct the interference at his own expense. [. . . ] Settings are described below: 3-11 MS-6712 ATX Mainboard Option Disabled Enabled Cached Description The specified ROM is not copied to RAM. The contents of specified ROM are copied to RAM for faster system performance. The contents of specified ROM are not only copied to RAM, the contents of the ROM area can be written to and read from cache memory. APIC Function This field is used to enable or disable the APIC (Advanced Programmable Interrupt Controller). Due to compliance to PC2001 design guide, the system is able to run in APIC mode. Enabling APIC mode will expand available IRQs resources for the system. MPS Table Version This field allows you to select which MPS (Multi-Processor Specification) version to be used for the operating system. You need to select the MPS version supported by your operating system. To find out which version to use, consult the vendor of your operating system. Settings: 1. 4, 1. 1. 3-12 BIOS Setup Advanced Chipset Features MSI Reminds You. . . DRAM Timing Control Press <Enter> and the following sub-menu appears. Current Host Clock This item shows the current CPU frequency. Configure SDRAM Timing by Selects whether DRAM timing is controlled by the SPD (Serial Presence Detect) EEPROM on the DRAM module. Setting to SPD enables 3-13 MS-6712 ATX Mainboard SDRAM Frequency, SDRAM CAS# Latency, Row Precharge Time, RAS Pulse Width, RAS to CAS Delay and SDRAM Bank Interleave automatically to be determined by BIOS based on the configurations on the SPD. SDRAM Frequency Use this item to configure the clock frequency of the installed SDRAM. SDRAM CAS# Latency This controls the timing delay (in clock cycles) before SDRAM starts a read command after receiving it. 1. 5 (clocks) increases the system performance the most while 3 (clocks) provides the most stable performance. Row Precharge Time This item controls the number of cycles for Row Address Strobe (RAS) to be allowed to precharge. If insufficient time is allowed for the RAS to accumulate its charge before DRAM refresh, refresh may be incomplete and DRAM may fail to retain data. This item applies only when synchronous DRAM is installed in the system. RAS Pulse Width This setting allows you to select the number of clock cycles allotted for the RAS pulse width, according to DRAM specifications. RAS to CAS Delay When DRAM is refreshed, both rows and columns are addressed separately. This setup item allows you to determine the timing of the transition from RAS (row address strobe) to CAS (column address strobe). Bank Interleave This field selects 2-bank or 4-bank interleave for the installed SDRAM. [. . . ] Since it lights up (usually red) when electricity is passed through it, it is usually used for the activity lights on computer's component, such as disk drivers. LPT (Line Printer Terminal) Logical device name for a line printer; a name reserved by the MS-DOS for up to three parallel printer ports: LPT1, LPT2, and LPT3. Overclocking Overclocking is resetting your computer so that the microprocessor runs faster than the manufacturer-specified speed (for example, setting an Intel 166 MHz (megahertz) microprocessor to run at 200 Mhz). PCI (Peripheral Component Interconnect) A local bus standard developed by Intel that first appeared on PCs in late 1993. [. . . ]