Acoustic Noise Emission Information - Dell OptiPlex 780 USFF Technical Manualbook

DELL™ OPTIPLEX™ 780 TECHNICAL GUIDEBOOK V2.0

ACOUSTIC NOISE EMISSION INFORMATION

OPTIPLEX 780 MT
Component
CPU
Memory
HDD (#, capacity)
RMSD
Graphics Adapter
The Declared Noise Emission in accordance with ISO 9296 for the Dell OptiPlex 780 MT is as follows:
(all values L expressed in bels; 1 bel=10 decibels, re 10
WAd
Operating Mode
Idle
HDD Operating
90% CPU
ODD Operating
The Declared A-weighted Sound Pressure Level in decibels (re 2x10
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
1
follows :
Typical Configuration Declared Sound Pressure
Operating Mode
Operator
Position
Idle
HDD Operating
90% CPU
ODD Operating
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
Typical Configuration
E8500
1GB DDR3 1066 MHz (x1)
160 GB 7200 RPM SATA2
DVDRW/DVD dual config
GeForce 9300 GE
Typical Configuration
Declared Sound Power (L
3.8
3.8
3.9
5.1
(LpA)
Table-Top
Bystander Operator
Position Position
(LpA) (LpA)
28.2 23.2
28.1 23.1
30.8 26.1
High-end Configuration
2GB DDR3 1066 MHz (x2)
250 GB 7200 RPM SATA2 (x2)
DVDRW/DVD dual config
-12
Watts)
High-end Configuration
) Declared Sound Power (L
WAd
N/A
N/A
N/A
N/A
-5
Pa), at Operator, Bystander, and Desk Side Positions are
High-end Configuration Declared Sound Pressure
Floor-Standing
Bystander
Position
(LpA) (LpA)
22.1 20.6
22.5 20.9
23.6 22.0
33.6
Q9550
Radeon HD 3470
)
WAd
(LpA)
Table-Top
Operator Bystander
Position Position
(LpA) (LpA)
28.0 23.2
28.0 23.0
32.2 26.8
42.1 35.6
Floor- Standing
By-
Operator
stander
Position
Position
(LpA)
(LpA)
21.4 20.5
21.4 20.4
27.6 26.3
34.3 33.3
46