AMD offers two PCIe® integrated blocks in the AMD UltraScale+™ architecture. The PCIe4 block is found in all UltraScale+ devices that support the PCIe IP. AMD Virtex UltraScale+ devices with high bandwidth memory (HBM) contain a mixture of the PCIE4 blocks as well as enhanced PCIE4C blocks. The PCIE4C integrated blocks are functionally equivalent to PCIE4 and also support PCIe Gen3 x16 in the -2LV speed grade. The minimum device requirements for the core are as follows:
| Capability Link Speed | Capability Link Widths | Supported Speed Grades |
|---|---|---|
| Gen1/Gen2 | x16 | -1, -1L, -1LV, -2, -2L, -2LV, -3 |
| Gen3 | x16 | -1, -1L, -2, -2L, -3 |
| x8 NL 1 | -1, -1L, -1LV, -2, -2L, -2LV, -3 | |
| x8 LL 2 | -1, -1L, -2, -2L, -3 | |
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| Capability Link Speed | Capability Link Widths | Supported Speed Grades |
|---|---|---|
| Gen1/Gen2 | x16 | -1, -2, -2L, -2LV, -3 |
| Gen3 | x16 | -1, -2, -2L, -2LV, -3 |
| x8 NL | -1, -2, -2L, -2LV, -3 | |
| x8 LL | -1, -2, -2L, -3 | |
| Gen4 | x8 | -2, -2L, -3 |