Dell PowerEdge T620 Technical Guide - Page 35

Minimum, Typical - dba

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Table 21 details the acoustical performance for the T620. Configuration (23 ± 2°C CPUs ambient) Hard drives Power supply unit Memory PCI cards Operating mode LWA-UL1 (bels) LpA2 (dBA) Prominent tones3 1 x 3.5" Idle4 3.7 24 None Minimum 1 250GB SATA (7.2K) 1 x 495W 1 x 2GB None Stressed5 3.8 24 None Typical 2 8 x 2.5" 300GB SAS (15K) 2 x 750W 8 x 4GB 1 x PERC H710 1 x 10GbE NIC Idle4 Stressed5 4.6 4.6 30 30 None None 1LWA-UL is the upper limit sound power levels (LWA) calculated per section 4.4.1 of ISO 9296 (1988) and measured in accordance to ISO 7779 (2010). 2LpA is the average A-weighted sound pressure level from the four bystander positions calculated per section 4.3 of ISO9296 (1988) and measured in accordance with ISO 7779 (2010). The system is placed in a half rack enclosure (base of system is 25 cm above reflective floor). 3Prominent tone: Criteria of D.6 and D.11 of ECMA-74 11th ed. (2010) are followed to determine if discrete tones are prominent. The system is placed in a half rack enclosure (base of system is 75 cm above reflective floor) and acoustic transducer is at front bystander position, ref ISO 7779 (2010 Section 8.6.2). 4Idle: Reference ISO 7779 (2010) definition 3.1.7; system is running in its operating system but no other specific activity. 5Stressed processor: An operating mode per ISO 7779 (2010) definition 3.1.6. The software SPECPower at 50% loading is activated to stress the processors. For more information on Dell's acoustical design, see the Dell Enterprise Acoustics white paper.

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Table 21 details the acoustical performance for the T620.
Configuration
(23 ± 2°C
ambient)
CPUs
Hard
drives
Power
supply
unit
Memory
PCI cards
Operating
mode
L
WA
-UL
1
(bels)
L
pA
2
(dBA)
Prominent
tones
3
Minimum
1
1 x 3
.5”
250GB
SATA
(7.2K)
1 x
495W
1 x 2GB
None
Idle
4
3.7
24
None
Stressed
5
3.8
24
None
Typical
2
8 x 2
.5”
300GB
SAS (15K)
2 x
750W
8 x 4GB
1 x PERC
H710
1 x 10GbE
NIC
Idle
4
4.6
30
None
Stressed
5
4.6
30
None
1
L
WA
-UL is the upper limit sound power levels (L
WA
) calculated per section 4.4.1 of ISO 9296 (1988) and measured in
accordance to ISO 7779 (2010).
2
L
pA
is the average A-weighted sound pressure level from the four bystander positions calculated per section 4.3 of
ISO9296 (1988) and measured in accordance with ISO 7779 (2010). The system is placed in a half rack enclosure (base of
system is 25 cm above reflective floor).
3
Prominent tone: Criteria of D.6 and D.11 of ECMA-74 11th ed. (2010) are followed to determine if discrete tones are
prominent. The system is placed in a half rack enclosure (base of system is 75 cm above reflective floor) and acoustic
transducer is at front bystander position, ref ISO 7779 (2010 Section 8.6.2).
4
Idle: Reference ISO 7779 (2010) definition 3.1.7; system is running in its operating system but no other specific activity.
5
Stressed processor: An operating mode per ISO 7779 (2010) definition 3.1.6. The software SPECPower at 50% loading is
activated to stress the processors.
For more information on Dell’s acoustical design, see the
Dell Enterprise Acoustics
white paper.