Dell manual Acoustic Noise Emission Information, Optiplex 980 MT

Acoustic Noise Emission Information

Optiplex 980 MT

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 x 2	160 GB 7200 RPM SATA	2.5” 160 GB 7200 RPM SATA
RMSD	DVD +/-RW	DVD +/-RW	DVD +/-RW
Graphics Adapter	NVidia GT230 1 GB	Integrated Adapter	Integrated Adapter

The Declared Noise Emission in accordance with ISO 9296 for the Dell Optiplex 980 MT is as follows1:

(all values LWAd expressed in bels2; 1 bel=10 decibels, re 10-12Watts; all values LpA expressed in decibels3, re 2x10-5Pa)

Sound Power

	High-end Configuration	Typical Configuration	EcoKit Configuration
Operating Mode	Declared Sound Power (LWAd)	Declared Sound Power (LWAd)	Declared Sound Power (LWAd)
Idle	4.2	3.6	3.1
HDD Operating	4.2	3.6	3.0
ODD Operating	5.0	5.0	5.2
90% CPU	4.3	3.6	3.0

Sound Pressure at Operator Position

	High-end Configuration		Typical Configuration		EcoKit Configuration
	Sound Pressure at Operator		Sound Pressure at Operator		Sound Pressure at Operator
Operating Mode	Position (LpA)		Position (LpA)		Position (LpA)
	Desktop	Desk side	Desktop	Desk side	Desktop	Desk side
Idle	33	26	27	21	22	18
HDD Operating	32	25	27	22	22	17
ODD Operating	43	36	44	41	44	38
90% CPU	33	26	26	20	22	18

1All 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.

2Declared 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 47