Dell OptiPlex 755 - Manual (Page 44)

version 1.0 44
Dell™ optiplex™ 755 technical guiDe
44
optiplex 755 Dt
component typical configuration high-enD configuration
CPU E4500 E6850
Memory 1GB DDRII 667MHz 2GB DDRII 800MHz
HDD (#, capacity) 80GB 7200 RPM SATA 80GB 10,000 RPM SATA
RMSD DVD/CD-RW Combo DVD/CD-RW Combo
Graphics Adapter Integrated Adapter ATI 2400 Pro
The Declared Noise Emission in accordance with ISO 9296 for the Dell Optiplex 755 DT is as follows 3 : (all values L
WAd
expressed in
bels 4 ; 1 bel=10 decibels, re 10 -12 Watts)
optiplex 755 Dt
operating moDe
typical configuration
DeclareD sounD power (l
wad
)
high-enD configuration
DeclareD sounD power (l
wad
)
Idle 3.7 4.0
HDD Operating 3.8 4.1
ODD Operating 5.2 5.1
90% CPU 3.7 4.4
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 3 :
optiplex 755 Dt
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 27 22 23 32 27 24
HDD Operating 28 23 23 33 28 25
ODD Operating 43 37 36 42 38 33
90% CPU 27 22 22 36 31 27
acoustic noisE EMission inforMation, cont.
3 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 specified in ISO 7779, but was measured using the same microphone distances and measurement techniques defined
for the other reported operating modes.
4 Declared Sound Power rounded to nearest tenth of a bel per ISO 9296 section 4.4.2