Table 59. Category B: Test results for OptiPlex All-in-One 7420 with Intel 300 processor/2 x 32 GB
memory/M.2 SSD/160 W Bronze power supply
Operating Mode Sound Power, Declared
mean A-wieghted level,
L
WA,m
(bels)
Sound Power,
Statistical adder for
verification, K
V
(bels)
Sound Pressure Declared mean
A weighted emission level, L
pA,m
,
(dB)
Idle 2.70 0.4 20.20
Storage Operating 2.80 0.4 20.10
CPU Operating 2.80 0.4 20.20
ODD Operating Not applicable Not applicable Not applicable
All tests are conducted according to ISO 7779 and declared according to ISO 9296 with operating modes defined by ECMA-74.
The Declared Noise Emission in accordance with ISO 9296 is as follows (all values L
WA,m
and K
V
expressed in bels; 1 bel=10
decibels, re 10-12 Watts.
The Declared A-weighted Sound Pressure Level in decibels (re 2x10-5 Pa), are measured in accordance with ISO 7779 7.6.1,
7.6.2, and C.15.2 and declared in accordance with ISO 9296 and rounded to nearest tenth of a bel per ISO 9296 section 4.4.2
Table 60. Category D: Test Configuration for OptiPlex All-in-One 7420 with i7-14700 processor vPro/2 x
32 GB memory/M.2 SSD/160 W Bronze power supply
Component Test Configuration
CPU 14th Generation Intel Core i7-14700 vPro
Memory 32 GB + 32 GB
HDD (#, capacity) M.2 solid-state drive
ODD None
Graphics Adapter Intel UHD Graphics 770
Power supply 160 W Bronze
Table 61. Category D: Test results for OptiPlex All-in-One 7420 with Intel 300 processor/2 x 32 GB
memory/M.2 SSD/160 W Bronze power supply
Operating Mode Sound Power, Declared
mean A-wieghted level,
L
WA,m
(bels)
Sound Power,
Statistical adder for
verification, K
V
(bels)
Sound Pressure Declared mean
A weighted emission level, L
pA,m
,
(dB)
Idle 2.80 0.4 20.90
Storage Operating 3.90 0.4 32.20
CPU Operating 4.10 0.4 36.60
ODD Operating Not applicable Not applicable Not applicable
All tests are conducted according to ISO 7779 and declared according to ISO 9296 with operating modes defined by ECMA-74.
The Declared Noise Emission in accordance with ISO 9296 is as follows (all values L
WA,m
and K
V
expressed in bels; 1 bel=10
decibels, re 10-12 Watts.
The Declared A-weighted Sound Pressure Level in decibels (re 2x10-5 Pa), are measured in accordance with ISO 7779 7.6.1,
7.6.2, and C.15.2 and declared in accordance with ISO 9296 and rounded to nearest tenth of a bel per ISO 9296 section 4.4.2
Chassis enclosure and ventilation requirements
Enclosure ventilation
If your enclosure has doors, they need to be of a type that allows at least 30% airflow through the enclosure (front and back).
Enclosure minimum clearance
54
Engineering specifications
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