PCIe AUX Power

Alveo V80 Data Center Accelerator Cards Data Sheet (DS1013)

Document ID
DS1013
Release Date
2024-05-08
Revision
1.0 English

The Alveo V80 accelerator card has two 8-pin PCIe AUX power connectors, AUX1 and AUX2, that each provide 150W additional power. While the card can operate without either AUX power connected, power to the QSFP cages, DDR, and DIMMs requires at least AUX power connector 1 to be connected. The location of the PCIe AUX power connectors is shown in Figure 2.

Note: The PCIe AUX 8-pin connector is not compatible with an ATX12V/EPS12V power cable source. Ensure that the appropriate PCIe auxiliary power source is available, and not an ATX12V/EPS12V power source. For more details, see Answer Record 72298.

The following table shows the maximum power available with and without AUX 2x4 power cables connected. At a minimum, the 75W PCIe slot power is always used.

Table 1. Power Availability
AUX Power Configuration

Maximum Power Available

AUX 2x4

No AUX power cable connected 1 75W
Two AUX power cables connected 300W 2
  1. QSFP cages, DDR, and DIMMs are not powered.
  2. Maximum card power is limited by the TDP given in Table 1.