Motherboard Flashcards
PCB
Printed Circuit Board
A conductive series of pathways laminated to a nonconductive substrate, that connects all other components of a computer (Spine).
Form Factor
The specific design and classification of a motherboard.
Types of Form Factors
ATX, micro ATX, ITX
ATX
- Advanced Technology Extended
- 12” x 9.6”
- Processor and Memory (are perpendicular) and inline with fan output of power supply.
Micro ATX
- Designed to work in standard ATX cases.
- Same design principles as ATX but in smaller foot print
- 9.6” x 9.6”
- Trade-offs: fewer memory slots, motherboard headers, expansion slots, and integrated components
- micro ATX Systems tend to be designed for low wattage power suppllies (less power consumption and heat production)
ITX
A family of small form factor boards for specialty use in home-theater systems and embedded components.
ITX Form Factors
mini ITX (6.7" x 6.7") nano ITX (4.7" x 4.7") pico ITX (3.9" x 2.8") mobile ITX (2.4" x 2.4")
System (Mother) Board Components
Chipsets, Expansion Slots, buses, Memory Slots, External Cache, CPU sockets, Power Connectors, Disk Drive Connectors, Keyboard Connectors, Integrated Peripheral Ports and Headers, BIOS/firmware, CMOS Battery, Front-panel Connectors
Bus Architecture Types
Serial and Parallel
Parallel Bus Architecture Limitations
Shorter circuit lengths and less throughput due to synchronization limitations of the separate lines (signal skewing).
Serial Architecture Limitations
The capability of the transceivers, which tends to grow over time due to technical advancements.
Examples of Serial Communication Specifications
SATA, USB, IEEE 1394/FireWire, PCIe
Bus
A common collection of signal pathways over which related devices communicate within a computer system.
Throughput
The amount of data that can be moved per unit of time.
Chipset
Is a collection of chips or circuits that perform interface and peripheral functions for the processor.
Northbridge
The set of circuitry or chips that manage high-speed peripheral communication.
Frontside Bus
A set of signal pathways connecting the CPU and the main memory.
Southbridge
- Is connected to and managed by the Northbridge.
- Provides support to slower onboard peripherals like PS/2, parallel ports, serial ports and SATA/PATA.
PCI
- Peripheral Component Interconnect
- 32-bit channel
- 33 MHz or 66MHz
- 133 MBps or 266 MBps
- 3.3V and 5V
PCI-X
PCI-Extended
- Targeted to servers
- 64-bit channel
- V 1.0 => 66 MHz or 133 MHz
- V 2.0 => 133 MHz or 266 MHz or 533 MHz
PCIe
PCI Express
- Serial