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PCI Express
 PCI Express Bandwidth
 Types of PCI Express
 Sources and References

PCI Express

Peripheral Component Interconnect Express interface, PCI Express, PCIe or PCI-e, is a high-speed serial computer expansion bus standard for personal computers. The PCIe standard is designed to replace PCI, PCI-X and AGP bus standards as the hardware connections of PC motherboard interface. A PCIe interface connection is charactered by the number of simultaneous sending and receiving lines of data. Besides, the PCI Express electrical interface is also commonly used in other interface standards, e.g. the laptop expansion card interface ExpressCard and computer storage interfaces SATA Express, U.2 (SFF-8639) and M.2.

PCI Express Bandwidth

According to PCIe 1.0, The personal computer bus specification, the bus bandwidth compare with other bus standards are:
Bus StandardBitClockMaximum Transfer Rate AGP 2x32-bit66MHz533MB/s AGP 4x32-bit66MHz1,066MB/s AGP 8x32-bit66MHz2,133MB/s PCI 32-bit33/66MHz133/266MB/s (depending on bus speed) PCI-X 1 SDR64-bit66/133Hz533/1066MB/s (depending on bus speed) PCI-X 2 DDR64-bit133MHz2,133MB/s PCI-X 2 QDR64-bit133MHz4,266MB/s PCIe x18/10bit2.5GHz250MB/s (in each direction) PCIe x28/10bit2.5GHz500MB/s (in each direction) PCIe x48/10bit2.5GHz1,000MB/s (in each direction) PCIe x88/10bit2.5GHz2,000MB/s (in each direction) PCIe x168/10bit2.5GHz4,000MB/s (in each direction) PCIe x328/10bit2.5GHz8,000MB/s (in each direction)

Types of PCI Express

Version/GenYearBitClockx1x2x4x8x16x32 1.020038/10bit2.5GHz0.250GB/s0.500GB/s1.000GB/s2.000GB/s4.000GB/sGB/s 2.020078/10bit5.0GHz0.500GB/s1.000GB/s2.000GB/s4.000GB/s8.000GB/sGB/s 3.02010128/130bit8.0GHz0.985GB/s1.969GB/s3.938GB/s7.877GB/s15.754GB/sGB/s 4.02017128/130bit16GHz1.969GB/s3.938GB/s7.877GB/s15.754GB/s21.508GB/sGB/s 5.02019128/130bit32GHz3.938GB/s7.877GB/s15.754GB/s21.508GB/s63.015GB/sGB/s

Sources and References

  • https://en.wikipedia.org/wiki/PCI_Express
  • http://www.interfacebus.com/PCI-Express-Bus-PCIe-Description.html
  • https://pinouts.ru/Slots/pci_express_pinout.shtml
  • https://www.trentonsystems.com/blog/pcie-gen4-vs-gen3-slots-speeds

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ID: 220100006 Last Updated: 1/6/2022 Revision: 0


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