| Use Case | Minimum Recommended | Bottleneck Warning | | :--- | :--- | :--- | | Gaming GPU (mid-range) | PCIe 3.0 x16 | Gen 3.0 vs 4.0: <5% difference on RTX 3060 | | Gaming GPU (high-end) | PCIe 4.0 x16 | RTX 4090 loses ~2-3% on Gen 3.0 | | NVMe SSD (Gen 4.0) | PCIe 4.0 x4 | Gen 3.0 slot halves sequential read (7 GB/s → 3.5 GB/s) | | 100GbE Network Card | PCIe 4.0 x8 | Needs ~16 GB/s bandwidth (Gen 3.0 x8 = 8 GB/s) |
The performance of a PCIe link is determined by its (speed) and its lane width (
Do you have a specific question about PCIe or would you like to know more about a particular aspect of the specification?
| Use Case | Minimum Recommended | Bottleneck Warning | | :--- | :--- | :--- | | Gaming GPU (mid-range) | PCIe 3.0 x16 | Gen 3.0 vs 4.0: <5% difference on RTX 3060 | | Gaming GPU (high-end) | PCIe 4.0 x16 | RTX 4090 loses ~2-3% on Gen 3.0 | | NVMe SSD (Gen 4.0) | PCIe 4.0 x4 | Gen 3.0 slot halves sequential read (7 GB/s → 3.5 GB/s) | | 100GbE Network Card | PCIe 4.0 x8 | Needs ~16 GB/s bandwidth (Gen 3.0 x8 = 8 GB/s) |
The performance of a PCIe link is determined by its (speed) and its lane width ( pcie specifications
Do you have a specific question about PCIe or would you like to know more about a particular aspect of the specification? | Use Case | Minimum Recommended | Bottleneck