PCIe - AshokBhat/notes GitHub Wiki
About
- PCI Express (Peripheral Component Interconnect Express) (PCIe)
- High-speed serial computer expansion bus standard
- Operates more like a network than a bus.
- Common motherboard interface for personal computers' peripherals - graphics cards, hard drives, SSDs, Wi-Fi and Ethernet
Characteristics
- Higher maximum system bus throughput
- Lower I/O pin count
- Smaller physical footprint
- Better performance scaling for bus devices
- More detailed error detection and reporting mechanism
- Native hot-swap functionality
Performance
| Interconnect |
Introduced |
Transfer Rate |
Eff. Payload Rate per Lane per Direction |
| PCIe 1.x |
2003 |
2.5 GT/s |
~0.2 GB/s |
| PCIe 2.x |
2007 |
4.0 GT/s |
~0.4 GB/s |
| PCIe 3.x |
2010 |
8.0 GT/s |
~1 GB/s |
| PCIe 4.0 |
2017 |
16 GT/s |
~2 GB/s |
| PCIe 5.0 |
2019 |
32 GT/s |
~4 GB/s |
See also
- [PCIe]] ](/AshokBhat/notes/wiki/[[NVLink) | Infiniband