Operating Conditions

Alveo U280 Data Center Accelerator Card Data Sheet (DS963)

Document ID
DS963
Release Date
2022-09-01
Revision
1.5 English

Inlet Temperature versus Airflow Requirement in Server

The following tables provide the required airflow rate and airflow speed to the card under various operating conditions.

Note: In the following tables, the term load refers to the total thermal power dissipation of the card.
Table 1. Inlet Temperature versus Airflow Requirement for the U280 Card at Sea Level with ~190W Load for 70°C Rated QSFP
Inlet Temperature versus Airflow Requirement of PCIe Card Slot (39.62 mm x 97.54 mm) at Sea Level for 70°C Rated QSFP
Inlet Temperature to the Card (°C) Linear Feet per Minute (LFM) Cubic Feet per Minute (CFM) Pressure (inwg)
5 300 12.5 0.37
10 320 13.3 0.42
15 350 14.6 0.50
20 390 16.2 0.62
25 440 18.3 0.79
30 500 20.8 1.02
35 570 23.7 1.32
40 660 27.5 1.77
45 750 31.2 2.28
50 (not supported) 870 36.2 3.06
Table 2. Inlet Temperature versus Airflow Requirement for the U280 Card at Sea Level with ~190W Load for 85°C Rated QSFP
Inlet Temperature versus Airflow Requirement of PCIe Card Slot (39.62 mm x 97.54 mm) at Sea Level for 85°C Rated QSFP
Inlet Temperature to the Card (°C) Linear Feet per Minute (LFM) Cubic Feet per Minute (CFM) Pressure (inwg)
5 220 9.2 0.20
10 230 9.6 0.22
15 250 10.4 0.26
20 280 11.6 0.32
25 310 12.9 0.40
30 350 14.6 0.50
35 390 16.2 0.62
40 450 18.7 0.83
45 520 21.6 1.10
50 (not supported) 600 25.0 1.46
Table 3. Inlet Temperature versus Airflow Requirement for the U280 Card above Sea Level with ~190W Load for 70°C Rated QSFP
Inlet Temperature versus Airflow Requirement of PCIe Card Slot (39.62 mm x 97.54 mm) at 1200m above Sea Level for 70°C Rated QSFP
Inlet Temperature to the Card (°C) Linear Feet per Minute (LFM) Cubic Feet per Minute (CFM) Pressure (inwg)
5 300 12.5 0.37
10 320 13.3 0.42
15 350 14.6 0.50
20 390 16.2 0.62
25 440 18.3 0.79
30 500 20.8 1.02
35 570 23.7 1.32
40 660 27.5 1.77
45 750 31.2 2.28
50 (not supported) 870 36.2 3.06
Table 4. Inlet Temperature versus Airflow Requirement for the U280 Card above Sea Level with ~190W Load for 85°C Rated QSFP
Inlet Temperature versus Airflow Requirement of PCIe Card Slot (39.62 mm x 97.54 mm) at 1200m above Sea Level for 85°C Rated QSFP
Inlet Temperature to the Card (°C) Linear Feet per Minute (LFM) Cubic Feet per Minute (CFM) Pressure (inwg)
5 240 10.0 0.24
10 250 10.4 0.26
15 270 11.2 0.30
20 300 12.5 0.37
25 330 13.7 0.45
30 370 15.4 0.56
35 420 17.5 0.72
40 480 20.0 0.94
45 560 23.3 1.28
50 (not supported) 650 27.0 1.72