SSD
speed of a PCIe 4.0 NVMe SSD in a PCIe 3.0 Motherboard Slot?
| PCI-Express Speeds (Rounded) | |||||
|---|---|---|---|---|---|
| Version | x1 Bandwidth | x2 Bandwidth | x4 Bandwidth | x8 Bandwidth | x16 Bandwidth |
| PCIe 1.0 | 250 MB/s | 500 MB/s | 750 MB/s | 2 GB/s | 4 GB/s |
| PCIe 2.0 | 500 MB/s | 1000 MB/s | 2 GB/s | 4 GB/s | 8 GB/s |
| PCIe 3.0 | 1 GB/s | 2 GB/s | 4 GB/s | 8 GB/s | 16 GB/s |
| PCIe 4.0 | 2 GB/s | 4 GB/s | 8 GB/s | 16 GB/s | 32 GB/s |
| PCIe 5.0 | 4 GB/s | 8 GB/s | 16 GB/s | 32 GB/s | 63 GB/s |
| PCIe 6.0 | 8 GB/s | 15 GB/s | 30 GB/s | 61 GB/s | 121 GB/s |
| PCIe 7.0 | 15 GB/s | 30 GB/s | 61 GB/s | 121 GB/s | 242 GB/s |
Written on November 28, 2025, Last update on
pc-hardware
storage