Thermal Solutions
Intel
®
Xeon
®
Processor C5500/C3500 Series and LGA1366 Socket
Thermal/Mechanical Design Guide
August 2010
55
Order Number: 323107-002US
For a 1U reference heatsink, see
Ψ
CA
target at 11 CFM through the fins.
shows
Ψ
CA
and pressure drop for the
1U heatsink versus the airflow provided. Best-fit equations are provided to prevent
errors associated with reading the graph.
Figure 7-1. 1U Heatsink Performance Curves
0.15
0.20
0.25
0.30
0.35
0.40
0.45
0.50
0
10
20
30
40
50
CFM Through Fins
Ψ
ca,
C/
W
0.00
0.20
0.40
0.60
0.80
1.00
1.20
1.40
Δ
P
, in
c
h
w
a
te
r
Mean
Ψ
ca
= 0.1430 + 1.141*CFM
-0.817
Ψ
ca
= 0.1430 + 1.141*CFM
-0.817
σ
= 0.0016 C/W
Δ
P = 1.9e-04CFM
2
+ 2.0e-02CFM
2
+ 2.0e-02CFM