DELL™ OPTIPLEX™ 760 TECHNICAL GUIDEBOOK V1.0
37 ACOUSTIC NOISE EMISSION INFORMATION
OPTIPLEX 760 USFF
The Declared Noise Emission in accordance with ISO 9296 for the Dell Optiplex 760 USFF is as follows:
(all values LWAd 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
follows1:
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
Component Typical Configuration High-end Configuration
CPU E7200 E8400
Memory 1 GB DDR2 667 MHz 2 GB DDR2 800 MHz
HDD (#, capacity) 80 GB 3.5” 7200 RPM SATA2 160 GB 3.5” 7200 RPM SATA2
RMSD DVD +/- RW DVD +/- RW
Graphics Adapter Intel Integrated Adapter Intel Integrated Adapter
Operating Mode Typical Configuration
Declared Sound Power (LWAd) High-end Configuration
Declared Sound Power (LWAd)
Idle 3.9 4.0
HDD Operating 3.9 3.9
ODD Operating 4.7 4.9
90% CPU 3.9 3.9
Operating Mode
Typical Configuration
Declared Sound Pressure (LpA)
High-end Configuration
Declared Sound Pressure (LpA)
Operator
Position (LpA)
Bystander
Position (LpA)
DeskSide
Position (LpA)
Operator
Position (LpA)
Bystander
Position (LpA)
DeskSide
Position (LpA)
Idle 30 28 25 32 28 22
HDD Operating 30 28 25 32 28 22
ODD Operating 38 33 31 42 35 26
90% CPU 29 27 25 32 28 24