Dell OptiPlex 790 Technical Guidebook - Page 45

High-end Configuration Declared Sound Pressure - i5

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DELL™ OPTIPLEX™ 790 TECHNICAL GUIDEBOOK - V 1.6 ACOUSTIC NOISE EMISSION INFORMATION OPTIPLEX 790 DT Component Typical Configuration High-end Configuration CPU Intel l3,3.3GHZ,2c SNB 65W Intel I5,3.1GHZ ,4c SNB 95W Memory 2G DDR3 1333MHz 2G DDR3 1333MHz(x2) HDD (#, capacity) 250G 7200RPM SATA2 500G 7200RPM SATA2 RMSD Graphics Adapter 16X DVD+/-RW SATA HH Intel® HD Graphics Family 16X DVD+/-RW SATA HH AMD Radeon HD6350 The Declared Noise Emission in accordance with ISO 9296 for the Dell OptiPlex 780 DT is as follows: (all values LWAd expressed in bels; 1 bel=10 decibels, re 10-12 Watts) Operating Mode Typical Configuration Declared Sound Power (LWAd) High-end Configuration Declared Sound Power (LWAd) Idle 3.7 3.7 HDD Operating 3.6 3.8 90% CPU 4.1 4.4 ODD Operating 5.1 5.1 The Declared A-weighted Sound Pressure Level in decibels (re 2x10-5 Pa), at Operator, Bystander, and Desk Side Positions are measured in accordance with ISO 7779 7.6.1, 7.6.2, and C.15.2 and declared in accordance with ISO 9296 for this product is as follows1: Operating Mode Idle HDD Operating 90% CPU ODD Operating Typical Configuration Declared Sound Pressure High-end Configuration Declared Sound Pressure (LpA) (LpA) Table-Top Floor-Standing Operator Position (LpA) Bystander Position (LpA) Operator Position (LpA) Bystander Position (LpA) 24.6 20.7 20.5 19.5 24.9 21.2 20.7 19.8 29.4 24.1 20.8 21.3 42.2 36.8 35.1 34.7 Table-Top Operator Position (LpA) Bystander Position (LpA) 24.9 22.5 24.2 21.8 33.4 30.7 41.2 37.2 Floor- Standing Operator Position (LpA) 21.0 21.0 27.1 35.5 Bystander Position (LpA) 20.9 20.9 26.2 33.5 1 All tests are conducted according to ISO 7779 and declared according to ISO 9296 except 90% CPU. For this mode, the system CPU was stressed at 90% utilization with no other peripheral device actively seeking. This test mode is not specified in ISO 7779, but was measured using the same microphone distances and measurement techniques defined for the other reported operating modes. 2 Declared Sound Power rounded to nearest tenth of a bel per ISO 9296 section 4.4.2 45

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DELL™ OPTIPLEX™ 790
TECHNICAL GUIDEBOOK - V 1.6
45
ACOUSTIC NOISE EMISSION INFORMATION
OPTIPLEX 790 DT
The Declared Noise Emission in accordance with ISO 9296 for the Dell OptiPlex 780 DT is as follows:
(all values L
WAd
expressed in bels; 1 bel=10 decibels, re 10
-12
Watts)
The Declared A-weighted Sound Pressure Level in decibels (re 2x10
-5
Pa), at Operator, Bystander, and Desk Side Positions are
measured in accordance with ISO 7779 7.6.1, 7.6.2, and C.15.2 and declared in accordance with ISO 9296 for this product is as
follows
1
:
1
All tests are conducted according to ISO 7779 and declared according to ISO 9296 except 90% CPU.
For this mode, the system CPU was stressed
at 90% utilization with no other peripheral device actively seeking.
This test mode is not specified in ISO 7779, but was measured using the same
microphone distances and measurement techniques defined for the other reported operating modes.
2
Declared Sound Power rounded to nearest tenth of a bel per ISO 9296 section 4.4.2
Operating Mode
Typical Configuration
Declared Sound Power (L
WAd
)
High-end Configuration
Declared Sound Power (L
WAd
)
Idle
3.7
3.7
HDD Operating
3.6
3.8
90% CPU
4.1
4.4
ODD Operating
5.1
5.1
Operating Mode
Typical Configuration Declared Sound Pressure
(LpA)
High-end Configuration Declared Sound Pressure
(LpA)
Table-Top
Floor-Standing
Table-Top
Floor- Standing
Operator
Position
(LpA)
Bystander
Position
(LpA)
Operator
Position
(LpA)
Bystander
Position
(LpA)
Operator
Position
(LpA)
Bystander
Position
(LpA)
Operator
Position
(LpA)
By-
stander
Position
(LpA)
Idle
24.6
20.7
20.5
19.5
24.9
22.5
21.0
20.9
HDD Operating
24.9
21.2
20.7
19.8
24.2
21.8
21.0
20.9
90% CPU
29.4
24.1
20.8
21.3
33.4
30.7
27.1
26.2
ODD Operating
42.2
36.8
35.1
34.7
41.2
37.2
35.5
33.5
Component
Typical Configuration
High-end Configuration
CPU
Intel l3,3.3GHZ,2c SNB 65W
Intel I5,3.1GHZ ,4c SNB 95W
Memory
2G DDR3 1333MHz
2G DDR3 1333MHz(x2)
HDD (#, capacity)
250G 7200RPM SATA2
500G 7200RPM SATA2
RMSD
16X DVD+/-RW SATA HH
16X DVD+/-RW SATA HH
Graphics Adapter
Intel® HD Graphics Family
AMD Radeon HD6350