PCIe 7.0規格即將完成,支援AI/ML、雲端和HPC
支付動態 · 2025-01-21

PCI-SIG公告PCIe 7.0規格進展,目標今年底正式釋出,其原始位元率將從前代64GT/s提升到128GT/s

PCIe 7.0規格目標包括將PCIe 6.0原始位元率(raw bit rate)由64GT/s提升到128GT/s,而在x16配置可達到512GB/s的雙向傳輸速度。(/PCI-SIG)

PCI特別興趣小組(Special Interest Group,SIG)上周公告PCIe 7.0規格草案進展,使電腦資料傳輸標準量較PCIe 5.0的8 GB/s大增4倍,目標在今年年底正式釋出。

PCIe 7.0規格0.7版已經制訂完成,已交由成員審查。這個版本包含成員對2024年4月的0.5版的意見,PCI SIG希望在2025年底之前完成PCIe 7.0版。

PCIe 7.0規格目標包括將PCIe 6.0原始位元率(raw bit rate)由64GT/s提升到128GT/s,而在x16配置可達到512GB/s的雙向傳輸速度。新版規格使用PAM4(Pulse Amplitude Modulation with level4,脈衝幅度調變)信令,在維持高穩定性、低延遲性的同時也將提升能源效率,此外也會回溯相容前代規格。

PCIe 7.0的每條通道的有效吞吐量為32 GB/s,為2019年5月公布的PCIe 5.0(每條通道的有效吞吐量可達8 GB/s)的4倍。PCIe 6.0於2022年1月公布,每條通道的有效吞吐量可達約16 GB/s。

PCIe 7.0為高頻寬、低延遲I/O互連技術,目標在支援資料密集的新興應用,包括800GB Ethernet、AI/ML、雲端和量子運算、超大規模資料中心、高效能運算(HPC)和軍事/航太應用。

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