PCIe 4.0 SSDはPCIe 3.0接続でも最速級?実は下位互換で使うのもアリかも - AKIBA PC Hotline!
980 PRO PCIe® 4.0 NVMe™ SSD 1TB Memory & Storage - MZ-V8P1T0B/AM | Samsung US
980 PRO w/ Heatsink PCIe® 4.0 NVMe™ SSD 1TB Memory & Storage - MZ-V8P1T0CW | Samsung US
Samsung 980 PRO 2TB PCI Express 4.0 NVMe SSD Review - PC Perspective
I bought the new Samsung 980 Pro 1TB (PCIe 4.0) and put in the Lenovo Yoga Slim 7 (PCIe 3.0), I saw only ~10% decrease in raw performance : r/AMDLaptops
CES 2020: Samsung 980 PRO PCIe 4.0 SSD Makes An Appearance