Operating Conditions

Alveo U200 and U250 Data Center Accelerator Cards Data Sheet (DS962)

Document ID
DS962
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. Required Flow at Sea Level for an Example 180W Load for 70°C Rated QSFP
Inlet Temperature versus Airflow Requirement of PCIe Card Slot (34.8 mm x 106.65 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 12.0 0.15
10 320 12.8 0.17
15 350 14.0 0.19
20 390 15.6 0.23
25 440 17.6 0.28
30 500 20.0 0.35
35 570 22.7 0.44
40 660 26.3 0.57
45 750 29.9 0.71
50 (not supported) 870 34.7 0.93
Table 2. Required Flow at Sea Level for an Example 180W Load for 85°C Rated QSFP
Inlet Temperature versus Airflow Requirement of PCIe Card Slot (34.8 mm x 106.65 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 8.8 0.09
10 230 9.2 0.10
15 250 10.0 0.11
20 280 11.2 0.13
25 310 12.4 0.16
30 350 14.0 0.19
35 390 15.6 0.23
40 450 18.0 0.29
45 520 20.8 0.37
50 (not supported) 600 23.9 0.48
Table 3. Required Flow at 1200m above Sea Level for an Example 180W Load for 70°C Rated QSFP
Inlet Temperature versus Airflow Requirement of PCIe Card Slot (34.8 mm x 106.65 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)
5 320 12.8 0.17
10 340 13.6 0.18
15 380 15.2 0.22
20 420 16.8 0.26
25 480 19.2 0.33
30 540 21.5 0.40
35 620 24.7 0.51
40 710 28.3 0.65
45 810 32.3 0.82
50 (not supported) 930 37.1 1.05
Table 4. Required Flow at 1200m above Sea Level for an Example 180W Load for 85°C Rated QSFP
Inlet Temperature versus Airflow Requirement of PCIe Card Slot (34.8 mm x 106.65 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 9.6 0.11
10 250 10.0 0.11
15 270 10.8 0.13
20 300 12.0 0.15
25 330 13.2 0.17
30 370 14.8 0.21
35 420 16.8 0.26
40 480 19.2 0.33
45 560 22.3 0.43
50 (not supported) 650 25.9 0.55