Inlet Temperature versus Airflow Requirement in Server
The following tables provide the required airflow rate and
airflow speed to the U50/U50 LV card under various operating conditions. In these
tables, the term load refers to the total
power drawn by the card.
Note: In the following tables, the term load refers to
the total thermal power dissipation of the card.
Table 1. Specification for the U50/U50 LV Card at Sea Level for 85°C Optical with
~63W Load
Inlet Temperature
versus Airflow Requirement of PCIe Card Slot (19.51 mm x 56.15 mm) at Sea Level for
85°C Optical |
Inlet Temperature to the Card (°C) |
Linear Feet per Minute (LFM) |
Cubic Feet per Minute (CFM) |
Pressure (inwg) |
5 |
160 |
1.9 |
0.07 |
10 |
170 |
2.0 |
0.07 |
15 |
180 |
2.1 |
0.08 |
20 |
200 |
2.4 |
0.09 |
25 |
260 |
3.1 |
0.13 |
30 |
300 |
3.5 |
0.15 |
35 |
390 |
4.6 |
0.22 |
40 |
520 |
6.1 |
0.35 |
45 |
680 |
8.0 |
0.53 |
50 |
870 |
10.3 |
0.79 |
55 (not supported) |
1000 |
11.8 |
1.00 |
Table 2. Specification for the U50/U50 LV Card at Sea Level for 70°C Optical with
~63W Load
Inlet Temperature
versus Airflow Requirement of PCIe Card Slot (19.51 mm x 56.15 mm) at Sea Level for
70°C Optical |
Inlet Temperature to the Card (°C) |
Linear Feet per Minute (LFM) |
Cubic Feet per Minute (CFM) |
Pressure (inwg) |
5 |
160 |
1.9 |
0.07 |
10 |
170 |
2.0 |
0.07 |
15 |
180 |
2.1 |
0.08 |
20 |
200 |
2.4 |
0.09 |
25 |
260 |
3.1 |
0.13 |
30 |
300 |
3.5 |
0.15 |
35 |
390 |
4.6 |
0.22 |
40 |
520 |
6.1 |
0.35 |
45 |
680 |
8.0 |
0.53 |
50 |
870 |
10.3 |
0.79 |
55 (not supported) |
1000 |
11.8 |
1.00 |
Table 3. Specification for the U50/U50 LV Card at 1200m above Sea Level for 85°C
Optical with ~63W Load
Inlet Temperature
versus Airflow Requirement of PCIe Card Slot (19.51 mm x 56.15 mm) at 1200m above
Sea Level for 85°C Optical |
Inlet Temperature to the Card (°C) |
Linear Feet per Minute (LFM) |
Cubic Feet per Minute (CFM) |
Pressure (inwg) |
5 |
170 |
2.0 |
0.07 |
10 |
180 |
2.1 |
0.08 |
15 |
200 |
2.4 |
0.09 |
20 |
210 |
2.5 |
0.09 |
25 |
280 |
3.3 |
0.14 |
30 |
320 |
3.8 |
0.17 |
35 |
420 |
5.0 |
0.25 |
40 |
560 |
6.6 |
0.39 |
45 |
730 |
8.6 |
0.59 |
50 |
930 |
11.0 |
0.88 |
55 (not supported) |
1080 |
12.7 |
1.14 |
Table 4. Specification for the U50/U50 LV Card at 1200m above Sea Level for 70°C
Optical with ~63W Load
Inlet Temperature
versus Airflow Requirement of PCIe Card Slot (19.51 mm x 56.15 mm) at 1200m above
Sea Level for 70°C Optical |
Inlet Temperature to the Card (°C) |
Linear Feet per Minute (LFM) |
Cubic Feet per Minute (CFM) |
Pressure (inwg) |
5 |
170 |
2.0 |
0.07 |
10 |
180 |
2.1 |
0.08 |
15 |
200 |
2.4 |
0.09 |
20 |
210 |
2.5 |
0.09 |
25 |
280 |
3.3 |
0.14 |
30 |
320 |
3.8 |
0.17 |
35 |
420 |
5.0 |
0.25 |
40 |
560 |
6.6 |
0.39 |
45 |
730 |
8.6 |
0.59 |
50 |
930 |
11.0 |
0.88 |
55 (not supported) |
1080 |
12.7 |
1.14 |