PCI-SIG has just released details for the new PCIe 3.0 specifications, capable of delivering double the bandwidth of the PCIe 2.0 format.
The PCIe 3.0 new specification extends the data rate to 8 GT/s while allowing compatibility with existing PCIe 1.x and 2.x products that support 2.5 and 5 GT/s.
Using the new data rate, it is now possible for products with PCIe 3.0 architecture to reach a bandwidth of nearly 1 gigabyte per second (GB/s) in one direction on a single-lane (x1) and 32 GB/s on a sixteen-lane (x16) configuration.
Enhanced Efficiency and Performance
The new 128b/130b encoding scheme also allows near 100% efficiency, offering a 25% efficiency increase for 8 GT/s compared to the 8b/10b efficiency of previous versions, which enables the doubled bandwidth. This improvement is crucial for applications requiring high data throughput, such as gaming, video editing, and data centers. The enhanced efficiency means that more data can be transferred with less overhead, making the system more effective and reducing latency.
Moreover, the PCIe 3.0 specification includes improvements in signal integrity and channel enhancements, which help maintain data integrity at higher speeds. This is particularly important for maintaining performance in environments with significant electromagnetic interference (EMI).
Backward Compatibility and Future-Proofing
One of the significant advantages of PCIe 3.0 is its backward compatibility with PCIe 1.x and 2.x products. This means that users can upgrade to the new standard without needing to replace their existing hardware, ensuring a smooth transition and protecting their investments. This backward compatibility is achieved through a flexible architecture that can adjust to the data rates of older versions while still providing the benefits of the new specification.
The PCIe 3.0 standard is also designed with future-proofing in mind. As technology continues to advance, the need for higher data transfer rates will only increase. PCIe 3.0 provides a robust foundation that can support future innovations and higher performance requirements. This makes it an ideal choice for industries that rely on cutting-edge technology and need to stay ahead of the curve.
The PCIe Base 3.0 specification is available for member download here.
The release of the PCIe 3.0 specifications marks a significant milestone in the evolution of PCI Express technology. With its doubled bandwidth, enhanced efficiency, and backward compatibility, PCIe 3.0 is set to provide substantial benefits to a wide range of applications and industries. Whether you are a gamer looking for smoother performance, a video editor needing faster data transfer, or a data center manager seeking improved efficiency, PCIe 3.0 offers the capabilities to meet your needs.
Via Electronista
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