Intel MB879 user manual Dram RAS# Precharge, Precharge Delay tRAS, System Memory Frequency

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BIOS SETUP

DRAM RAS# Precharge

This option sets the number of cycles required for the RAS to accumulate its charge before the SDRAM refreshes. The default setting for the Active to Precharge Delay is 4.

Precharge Delay (tRAS)

The default setting for the Precharge Delay is 12.

System Memory Frequency

The default setting is 533MHz.

SLP_S4# Assertion Width

The default setting is 1 to 2 Sec.

System BIOS Cacheable

The setting of Enabled allows caching of the system BIOS ROM at F000h-FFFFFh, resulting in better system performance. However, if any program writes to this memory area, a system error may result.

Video BIOS Cacheable

The Setting Enabled allows caching of the video BIOS ROM at C0000h-F7FFFh, resulting in better video performance. However, if any program writes to this memory area, a system error may result.

Memory Hole At 15M-16M

In order to improve performance, certain space in memory can be reserved for ISA cards. This memory must be mapped into the memory space below 16 MB. The choices are Enabled and Disabled.

On-Chip VGA Setting

The fields under the On-Chip VGA Setting and their default settings are: PEG/On Chip VGA Control: Auto

On-Chip Frame Buffer Size: 8MB

DVMT Mode: DVTM

DVMT/Fixed Memory Size: 128MB

SDVO Device Setting: (LVDS, DVI, Dual DVI, CRT)

Remarks: Set to LVDS for ID390, Set to CRT to ID390C, Set to DVI for ID391/ID392/ID391D/ID392D

SDVO LVDS Protocol: 1Ch SPWG, 24bit

SDVO Panel Number: 1024x768

Boot Display: Auto

Panel Scaling: Auto

Panel Number: 1024x768 18 bit SC

MB879 User’s Manual

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Contents Version USER’S ManualAcknowledgments Table of Contents MB879 Mini ITX Motherboard Product Description IntroductionChecklist Chipset MB879 SpecificationsBoard Dimensions Installations Installing the CPU Lock Installing the MemorySetting the Jumpers Jumper Locations on MB879 JP3 COM3 RS232 +5V / +12V Power Setting JP1 COM4 RS232 +5V / +12V Power SettingJP2 Lvds Panel Voltage Selection JP4 CPU FSB SelectionSW1 Lvds Resolution Switch Setting JP5 Clear Cmos SettingConnectors on MB879 Connector Locations on MB879 CN1 PS/2 Keyboard and PS/2 Mouse Connectors FAN2 System Fan Power Connector FAN1 CPU Fan Power ConnectorIDE1 IDE Connector J1 Floppy Drive ConnectorJ3 TV Out Header RCA & S-Video J2 ATX Power Supply ConnectorJ4 COM2, COM3, COM4 Serial Ports J9, J6 Lvds Connectors 1st channel, 2nd channel J5 IrDA ConnectorJ7 Panel Inverter Power Connector J8 Digital I/OJ11 Panel Inverter Power Connector J10 1394 ConnectorJ12 Mini PCI Connector J13 Speaker Connector J14 Front Audio ConnectorJ18 System Function Connector J15, J16 Serial ATA Connectors J17 Wake On LAN ConnectorJ19 USB4 / USB5 Connector J20 CD-In Pin Header J21 Power LED ConnectorThis page is intentionally left blank Bios Setup Bios Setup Bios IntroductionPhoenix AwardBIOS Cmos Setup Utility Date Standard Cmos SetupIDE Channel Master/Slave TimeDrive a / Drive B Halt On VideoCPU Feature Advanced Bios FeaturesHard Disk Boot Priority Virus WarningFirst/Second/Third Boot Device Quick Power On Self TestBoot Other Device Boot Up Floppy SeekApic Mode Typematic Delay MsecSecurity Option MPS Version Control for OSDram RAS# to CAS# Delay Advanced Chipset FeaturesDram Timing Selectable CAS Latency TimeSystem Bios Cacheable Precharge Delay tRASVideo Bios Cacheable On-Chip VGA SettingPanel Number Panel ScalingOnboard PCI-E LAN LAN PXE Option ROMOnChip IDE Device Integrated PeripheralsOn-chip Primary PCI IDE Enabled IDE HDD Block ModeOnChip Primary/Secondary PCI IDE IDE Primary/Secondary Master/Slave PIOPower on Function On-Chip Serial ATA SettingKB Power on Password Hot Key Power onOnboard Serial Port Uart Mode SelectPwron After PWR-Fail RUN Vgabios if S3 Resume Power Management SetupPower Management Acpi FunctionHDD Power Down Suspend ModePower On by Ring Video Off MethodReload Global Timer Events Resume by AlarmPNP/PCI Configurations PC Health Status Auto Detect PCI Clk Frequency/Voltage ControlSpread Spectrum Modulated Load Optimized Defaults Load Fail-Safe DefaultsSet Supervisor Password Save & Exit SetupThis page is intentionally left blank Drivers Installation Intel Chipset Software Installation Utility VGA Drivers Installation LAN Drivers Installation O Port Address Map AppendixLevel Function Interrupt Request Lines IRQSample Code Watchdog Timer ConfigurationAppendix OutportbW627EHFINDEXPORT, W627EHFLOCK W627EHFLOCK
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MB879 specifications

The Intel MB879, a powerful microprocessor from Intel, is well-regarded within the realm of computing technology. As part of the Intel architecture family, it combines cutting-edge performance with advanced energy efficiency features, catering to a wide variety of applications from embedded systems to high-performance computing.

One of the standout features of the Intel MB879 is its multi-core design. This allows for enhanced multitasking capabilities and improved performance in parallel processing environments. By distributing workloads across multiple cores, the MB879 ensures that applications, particularly those requiring intensive computational power, run smoothly and efficiently.

The processor is built on a robust 14nm manufacturing process, which contributes to its impressive performance per watt ratio. This inherent energy efficiency not only reduces operational costs but also aligns with the growing demand for greener computing solutions. The lower thermal output allows for quieter cooling solutions, making it suited for environments where noise levels are a concern.

Another significant characteristic of the Intel MB879 is its support for advanced memory technologies. With DDR4 memory support, it can handle greater bandwidth and efficiency, significantly improving data access speeds. This is particularly beneficial for memory-intensive applications such as database management and large-scale simulations.

Intel's integrated graphics technology is another notable feature of the MB879. The integrated GPU facilitates smooth graphic rendering without the need for a dedicated graphics card, making the processor suitable for light gaming and media playback while preserving system space and reducing power consumption.

Security is also a priority with the Intel MB879, which integrates advanced security features to protect data and enhance system integrity. Technologies like Intel Secure Boot and Intel Trusted Execution Technology help safeguard against various cyber threats, ensuring that sensitive information remains secure.

In conclusion, the Intel MB879 stands as a versatile and powerful microprocessor offering a blend of performance, efficiency, and security. With its multi-core architecture, advanced memory support, integrated graphics, and robust security features, it meets the demands of modern computing, from everyday applications to enterprise-level tasks, making it an excellent choice for developers and businesses alike.