Table 15. M520 Acoustical Performance - Dell PowerEdge M520 Technical Manual


Environmental specifications: The optimized thermal management makes the PowerEdge M520
reliable under a wide range of operating environments as shown in Table 23. When operating
above 30°C ambient, performance impacts may be seen. For more information see the
PowerEdge M520 Systems Owner's Manual
Acoustical performance
The acoustical performance of the PowerEdge M520 is reflected in Table 15. The addition of some
components can cause an increase in fan speed and acoustical output. Contributors to acoustical
output can include:

The system thermal profile selected in BIOS (for example, power- or performance- optimized
DAPC)

Number of installed processors

Population of modular, non-homogenous modular deployment

Impedance of blanks
Configuration
(23 ± 2°C CPUs
ambient)
1 x 80W
Minimum
(4 core)
2 x 95W
Typical
(8 core)
1
L -UL is the upper limit sound power levels (L
WA
accordance to ISO 7779 (2010).
2
L is the averaged A-weighted sound pressure level of four bystanders in accordance with ISO 7779 (2010) Section
pA
8.6.2. The system is placed inside 42U rack in 25 cm height.
3
Standby: AC power is connected to power supply units but the system is not turned on.
4
Idle: Reference ISO 7779 (2010) definition 3.1.7; system is running in its operating system but no other specific activity.
PowerEdge M520 Technical Guide
28
Table 15. M520 acoustical performance
Hard HDD
DIMMs
drives controller
1 x
4 x Onboard
SATA
2GB SATA
(7.2K)
2 x SAS 8 x PERC H310
(10K) 4GB (mini)
) calculated per section 4.4.1 of ISO 9296 (1988) and measured in
WA
on Dell.com/Support/Manuals.
NDC PCI cards
Any
None mezzanine
card
Any
1Gb mezzanine
card
Dell
1
L -UL
Operating
WA
mode
(bels)
3
Standby 6.7
4
Idle 7.2
3
Standby 6.8
4
Idle 7.2
2
L
pA
(dBA)
53
56
53
56