Dell manual OptiPlex 980 Technical Guidebook

	High-end Configuration	Typical Configuration	EcoKit Configuration
Operating Mode	Declared Sound Power (LWAd)	Declared Sound Power (LWAd)	Declared Sound Power (LWAd)
Idle	3.7	3.4	3.1
HDD Operating	3.8	3.5	3.1
ODD Operating	5.1	5.1	5.1
90% CPU	4.2	3.4	3.1

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	27	22	21	19	21	18
HDD Operating	27	21	21	20	22	19
ODD Operating	44	36	44	35	44	36
90% CPU	34	26	21	19	22	18

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	23	21	20	19	19	18
HDD Operating	23	21	21	19	20	18
ODD Operating	37	33	37	33	37	34
90% CPU	28	24	21	19	20	18

OptiPlex 980 Technical Guidebook Page 49