Dell manual Optiplex 980 DT, Sound Pressure at Bystander Position

Sound Pressure at Bystander Position

	High-end Configuration		Typical Configuration		EcoKit Configuration
	Sound Pressure at		Sound Pressure at		Sound Pressure at
Operating Mode	Bystander Position (LpA)		Bystander Position (LpA)		Bystander Position (LpA)
	Desktop	Desk side	Desktop	Desk side	Desktop	Desk side
Idle	28	24	22	21	18	17
HDD Operating	27	24	23	21	19	17
ODD Operating	37	34	37	37	37	35
90% CPU	28	25	21	21	19	17

Optiplex 980 DT

Component	High-end Configuration	Typical Configuration	EcoKit Configuration
CPU	Quad Core i7 2.8 GHz	Dual Core i5 3.2 GHz	Dual Core i5 3.2 GHz
Memory	4 GB DDRIII 800 MHz	2 GB DDRIII 800 MHz	2 GB DDRIII 800 MHz
HDD (#, capacity)	320 GB 7200 RPM SATA	160 GB 7200 RPM SATA	2.5” 160 GB 7200 RPM SATA
RMSD	DVD +/-RW	DVD +/-RW	DVD +/-RW
Graphics Adapter	AMD Radeon HD3470 256MB	Integrated Adapter	Integrated Adapter

The Declared Noise Emission in accordance with ISO 9296 for the Dell Optiplex 980 MT is as follows3:

(all values LWAd expressed in bels4; 1 bel=10 decibels, re 10-12Watts; all values LpA expressed in decibels3, re 2x10-5Pa)

Sound Power

3All tests are conducted according to IS 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.

4Declared Sound Power rounded to the nearest tenth of a bel per ISO 9296 section 4.4.2

3Declared Sound Pressure rounded to the nearest whole decibel per ISO 9296 section 4.4.4

OptiPlex 980 Technical Guidebook Page 48