DELL™ OPTIPLEX™ 790 TECHNICAL GUIDEBOOK - V 2.046ACOUSTIC NOISE EMISSION INFORMATIONOPTIPLEX 790 DTThe 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)The Declared A-weighted Sound Pressure Level in decibels (re 2x10-5 Pa), at Operator, Bystander, and Desk Side Positions aremeasured 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 asfollows1:1 All tests are conducted according to ISO 7779 and declared according to ISO 9296 except 90% CPU. For this mode, the system CPU was stressedat 90% utilization with no other peripheral device actively seeking. This test mode is not specified in ISO 7779, but was measured using the samemicrophone 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 4.4.2Operating Mode Typical ConfigurationDeclared Sound Power (LWAd)High-end ConfigurationDeclared Sound Power (LWAd)Idle 3.7 3.7HDD Operating 3.6 3.890% CPU 4.1 4.4ODD Operating 5.1 5.1Operating Mode Typical Configuration Declared Sound Pressure(LpA)High-end Configuration Declared Sound Pressure(LpA)Table-Top Floor-Standing Table-Top Floor- StandingOperatorPosition(LpA)BystanderPosition(LpA)OperatorPosition(LpA)BystanderPosition(LpA)OperatorPosition(LpA)BystanderPosition(LpA)OperatorPosition(LpA)Bystand-er Posi-tion (LpA)Idle 24.6 20.7 20.5 19.5 24.9 22.5 21.0 20.9HDD Operating 24.9 21.2 20.7 19.8 24.2 21.8 21.0 20.990% CPU 29.4 24.1 20.8 21.3 33.4 30.7 27.1 26.2ODD Operating 42.2 36.8 35.1 34.7 41.2 37.2 35.5 33.5Component Typical Configuration High-end ConfigurationCPU Intel l3,3.3GHZ,2c SNB 65W Intel I5,3.1GHZ ,4c SNB 95WMemory 2G DDR3 1333MHz 2G DDR3 1333MHz(x2)HDD (#, capacity) 250G 7200RPM SATA2 500G 7200RPM SATA2RMSD 16X DVD+/-RW SATA HH 16X DVD+/-RW SATA HHGraphics Adapter Intel® HD Graphics Family AMD Radeon HD6350