What can PCI-E 3.0 bring us?-seesuo

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What can PCI-E 3.0 bring us?

2017-01-19

PCI-E PCI-Express PCI Express 3.0

Experienced PCI - E 2.0 era, the arrival of the PCI - E 3.0 data will lead to higher bandwidth and lower power consumption, it is possible to implement SSDs with PCI-E interfaces in the future, allowing data throughput greatly increased.

PCI-E 3

PCI-E 3.0 also adds a 128b / 130b decoding mechanism to ensure almost 100% transmission efficiency, compared to the previous version of the 8b / 10b mechanism to enhance the 25%, thus contributing to the transmission bandwidth doubled, continuing the PCI- E norms of the tradition.

The difference between PCI-E 2.0 and PCI-E 3.0

The biggest difference between PCI-E 2.0 and PCI-E 3.0 is a significant increase in data throughput. PCI-E 2.0 in the signal strength of 5GT / s, so that to achieve a 500MB / s data throughput. Thus a lane data path, is defined as x1, its data transmission capacity is 500MB / s. Therefore, with PCI-E 2.0 x16 specifications, which means that it has 16 lane data path, it can achieve 8GB / s data throughput. The PCI-E 3.0, these data transmission capacity has been doubled again. PCI Express 3.0 signal strength of 8GT / s, can achieve 1GB / s data throughput.

PCIe Architecture

Raw Bit Rate

Interconnect bandwidth

Bandwidth

Per Lane

Per direction

Total Bandwidth for x16 Link

PCIe 3.0

8.0GT / s

8Gb/s

1GB/s

32GB/s

PCIe 2.0

5.0GT / s

4Gb/s

500MB/s

16GB/s

Follow-up specification of PCI - E 3.0

The PCI-E specification is about to undergo a major update every four years, and the PCI SIG believes that this pattern will continue to follow.

From the theoretical point of view, compared to the previous generation PCI-E 2.0, PCI-E 3.0 does improve a lot, but can bring changes to the GPU industry, has yet to be practice. We are also looking forward to doubled data bandwidth of the PCI-E 3.0 can bring a new development platform for graphics card, and allows the performance of CPU achieve a new level.