Dell OptiPlex 755 - Page 45

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DELL™ OPTIPLEX™ 755 TECHNICAL GUIDE
45
OPTIPLEX 755 SFF
COMPONENT TYPICAL CONFIGURATION HIGH-END CONFIGURATION
CPU E4500 E6850
Memory 1GB DDRII 667MHz 2GB DDRII 800MHz
HDD (#, capacity) 80GB 7200 RPM SATA 160GB 7200 RPM SATA
RMSD DVD/CD-RW Combo DVD/DVD+/-R
Graphics Adapter Integrated Adapter ATI 2400 Pro
The Declared Noise Emission in accordance with ISO 9296 for the Dell Optiplex 755 SFF is as follows
5
: (all values L
WAd
expressed in bels
6
; 1 bel=10 decibels,
re 10
-12
Watts)
OPTIPLEX 755 SFF
OPERATING MODE
TYPICAL CONFIGURATION
DECLARED SOUND POWER (L
WAd
)
HIGH-END CONFIGURATION
DECLARED SOUND POWER (L
WAd
)
Idle 4.0 4.3
HDD Operating 4.1 4.3
ODD Operating 5.0 5.2
90% CPU 4.1 4.5
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
5
:
OPTIPLEX 755 SFF
OPERATING MODE
TYPICAL CONFIGURATION
DECLARED SOUND PRESSURE (L
pA
)
HIGH-END CONFIGURATION
DECLARED SOUND PRESSURE (L
pA
)
Operator
Position
(L
pA
)
Bystander
Position
(L
pA
)
DeskSide
Position
(L
pA
)
Operator
Position
(L
pA
)
Bystander
Position
(L
pA
)
DeskSide
Position
(L
pA
)
Idle 31 26 26 35 31 26
HDD Operating 31 26 26 35 31 26
ODD Operating 38 33 30 44 39 33
90% CPU 32 27 27 36 32 28
acoustic noisE EMission inforMation, cont.
5
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 spinning. This test mode is not specied in ISO 7779, but was measured using the same microphone distances and measurement techniques dened
for the other reported operating modes.
6
Declared Sound Power rounded to nearest tenth of a bel per ISO 9296 section 4.4.2