Motherboard Facts — CyberGrind

Motherboard Overview

      The motherboard is a large flat circuit board that connects and coordinates all major computer components.
      It houses the CPU socket, RAM slots, BIOS/UEFI chip, expansion slots, power connectors, and often
      integrated NIC, audio, and graphics circuits. All components communicate through the system bus.
    

Bus Architecture

Bus Type	Details	Bandwidth (x1 lane)
PCI	32-bit shared bus at 33 MHz. Older technology.	133 MB/s (total)
AGP	Dedicated graphics slot derived from PCI. Replaced by PCIe.	N/A
PCIe Gen 1	Point-to-point, full-duplex serial interface.	250 MB/s
PCIe Gen 2	Doubles Gen 1 throughput.	500 MB/s
PCIe Gen 3	Current mainstream standard for many platforms.	~1 GB/s
PCIe Gen 4	AMD Zen 2+ and Intel 11th Gen+.	~2 GB/s
PCIe Gen 5	AMD Zen 4, Intel 12th Gen+, RTX 50 series.	~4 GB/s

      PCIe lanes come in x1, x4, x8, and x16 sizes. More lanes = more bandwidth.
      GPUs typically occupy an x16 slot. Every PCIe generation is backward compatible.
    

Expansion Cards

🖥 Video Card (GPU)

Dedicated graphics processing with onboard VRAM and its own cooling solution. Connects via PCIe x16.

🌐 Network Card (NIC)

Wired (RJ-45) or wireless connectivity. Often integrated; discrete cards add speed or wireless capability.

🔊 Audio Card

Converts electrical signals to audio via a Digital Signal Processor (DSP). Supports 5.1 and 7.1 surround sound, VoIP, and MIDI.

🔌 USB Expansion

Adds USB ports beyond motherboard capacity without the bandwidth limits of a USB hub.

Audio Port Color Guide

Color	Function
Lime Green	Front speakers / headphones
Pink	Microphone input
Light Blue	Stereo line-in
Orange	Subwoofer / center channel
Black	Rear surround (5.1 / 7.1)
Gray	Middle surround (7.1 only)
Gold	MIDI / game port

Motherboard Facts & Bus Architecture

🖥 Video Card (GPU)

🌐 Network Card (NIC)

🔊 Audio Card

🔌 USB Expansion