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Computer Bus Types
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PCI-X
Purpose: Enhanced PCI for higher bandwidth, Speed: Up to 1 GB/s
USB
Purpose: Universal bus for connecting various peripherals, Speed: Up to 20 Gbps (USB4)
PATA
Purpose: Interface for connecting storage devices like HDDs and optical drives, Speed: Up to 133 MB/s (ATA/ATAPI-7)
HyperTransport
Purpose: High-speed, low-latency point-to-point link for integrated circuits, Speed: Up to 25.6 GB/s (3.1 specification)
EISA
Purpose: Extended ISA for 32-bit connectors, Speed: 33 MB/s
PCI Express
Purpose: High-speed serial computer expansion bus, Speed: Up to 31.504 GB/s (PCIe 4.0 x16)
MCA
Purpose: Proprietary bus for IBM PS/2 systems, Speed: 20 MB/s
SCSI
Purpose: Connects and transfers data between computers and peripheral devices, Speed: Up to 640 MB/s (Ultra-640 SCSI)
SPI
Purpose: Control bus for communicating between integrated circuits, Speed: Tens of Mbps (typically up to 10 Mbps)
QPI
Purpose: Intel's high-speed point-to-point interconnect, Speed: Up to 25.6 GB/s
AGP
Purpose: Connects graphics cards to the motherboard, Speed: 266 MB/s to 2.1 GB/s
SATA
Purpose: Interface for connecting storage devices like SSDs and HDDs, Speed: Up to 600 MB/s (SATA 3.0)
I2C
Purpose: Control bus for communicating between integrated circuits, Speed: Up to 3.4 Mbps (High-speed mode)
Front Side Bus
Purpose: Connects CPU to main memory and other components, Speed: Between 66 MHz and 400 MHz bus speed
VLB
Purpose: Connects high-speed peripherals, primarily video cards, Speed: 160 MB/s
FireWire
Purpose: High-speed interface for multimedia peripherals, Speed: Up to 800 Mbps (IEEE 1394b)
Thunderbolt
Purpose: High-speed interface for data and video, Speed: Up to 40 Gbps (Thunderbolt 3)
PCI
Purpose: Connects peripheral devices to the motherboard, Speed: 133 MB/s (32-bit at 33 MHz)
ISA
Purpose: Connects peripheral cards to the motherboard, Speed: 8.33 MB/s (16-bit at 8 MHz)
CAN
Purpose: Controller Area Network for automotive and industrial systems, Speed: Up to 1 Mbps
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