PCIe Connector/Data Rates

Alveo U280 Data Center Accelerator Card Data Sheet (DS963)

Document ID
Release Date
1.7 English

The Alveo U280 accelerator card uses an AMD UltraScale+™ FPGA containing a PCIE4C block. The PCIE4C block is compliant to the PCI Express Base Specification v3.1 supporting up to 8.0 GT/s (Gen3 x16) and compatible with PCI Express Base Specification v4.0 supporting up to 16.0 GT/s (Gen4 x8). The PCIE4C block is also compliant with CCIX Base Specification Revision 1.0 v0.9, supporting speeds up to 16.0 GT/s.

Table 1. PCI Express Data Transfer Rate Performance
PCI Express Generation Performance
Gen 1 2.5 GigaTransfers per second (GT/s)
Gen 2 5.0 GT/s
Gen 3 8.0 GT/s
Gen 4 1 16.0 GT/s
  1. For a list of limitations when operating at the Gen4 rate, see UltraScale+ Devices Integrated Block for PCI Express LogiCORE IP Product Guide (PG213).