PCI-SIG Announces PCI Express 7.0 Specification to Reach 128 GT/s
PCI-SIG today announced that the PCI Express (PCIe) 7.0 specification will double the data rate to 128 GT/s [gigatransfers per second] and is targeted for release to members in 2025.
PCI-SIG technical workgroups will be developing the PCIe 7.0 specification with the following feature goals:
- Delivering 128 GT/s raw bit rate and up to 512 GB/s bi-directionally via x16 configuration
- Utilizing PAM4 (Pulse Amplitude Modulation with 4 levels) signaling
- Focusing on the channel parameters and reach
- Continuing to deliver the low-latency and high-reliability targets
- Improving power efficiency
- Maintaining backwards compatibility with all previous generations of PCIe technology
Also at Phoronix and Tom's Hardware.
(Score: 1, Interesting) by Anonymous Coward on Thursday June 23 2022, @09:09AM (3 children)
It's gigaTransfers/s referring to the raw bit rate as in without any encoding schemes. It's been used since the first PCIe version.
(Score: 0) by Anonymous Coward on Thursday June 23 2022, @09:45AM (2 children)
can you please confirm: "128GT/s and compression could lead to >"?
(Score: 0) by Anonymous Coward on Thursday June 23 2022, @09:47AM (1 child)
anyway. "128GT/s and compression ould lead to <<up to 512GB/s>>".
(Score: 3, Informative) by Anonymous Coward on Thursday June 23 2022, @10:37AM
No compression necessary. 128Gt/s * 2bits/t (PAM4) * 16 lanes = 4096Gb/s / 8bits/byte = 512GB/s