Owners Manual

Conguration Number of
processors
Heatsink Processor/
DIMM blank
DIMM blanks Maximum number
of DIMM blanks
Fan
CPU=200/205 W
and 150 W/165 W
FO*
XC640 Series
(3.5 inch hard drives x
4)
1 One 1U standard
heat sink for CPU ≤
165 W
No Required for
processor 1
11 blanks Five standard fans
One 1U 2-pipe heat
sink for CPU=150
W/165 W FO*
One 1U 2-pipe heat
sink for
CPU=200/205 W
2 Two 1U standard
heat sink for CPU ≤
165 W
Two 1U 2-pipe heat
sink for CPU=150
W/165 W
Yes Eight high
performance fans
Two 1U 2-pipe heat
sink for
CPU=200/205 W
No Required 22 blanks Eight standard fans
Eight high
performance fans
NOTE: *165 W and 150 W frequency optimized includes Intel Xeon Gold 6146 and 6144 processors.
Ambient temperature limitations
The following table lists congurations that require ambient temperature less than 35°C.
NOTE
: The ambient temperature limit must be adhered to ensure proper cooling and to avoid excess processor throttling, which
may impact system performance.
Table 30. Conguration based ambient temperature restrictions
System Front Backplane Processor Thermal
Design Power
Processor Heat Sink Fan Type Ambient Restriction
XC640 Series
10 x 2.5 inch SAS/
SATA hard drives
4 x 3.5 inch SAS/SATA
and NVMe drives
200 W, 205 W 2 pipe 1U high
performance
High performance
fan
30°C
10 x 2.5 inch SAS/
SATA and NVMe
drives(4)
165 W, 200 W, 205
W
2 pipe 1U high
performance
High performance
fan
30°C
Technical specications 29