Dell 980 manual 320GB Sata 7200 RPM HDD, 500GB Sata 7200 RPM HDD, Internal buffer size

Environmental Non-Operating Conditions (Non-Condensing):
Temperature Range	-400C to 650C
Relative Humidity Range	10% to 90% non-condensing
Maximum Wet Bulb Temperature	380C
Altitude Range	-50 ft to 35000 ft
3.5” 320GB SATA 7200 RPM HDD
Capacity (bytes)	320,072,933,376
Dimensions inches (W x D x H)	5.87 x 4 x 1
Interface type and Maximum speed	Up to 3Gb/s
Internal buffer size	16 MB
Average Seek Time	8.5 ms
Rotational Speed	7200 rpm
Logical Blocks	625,142,448
Power Source
DC Power (Max)	Idle 7.0W, Active 10.0W
DC Current	5V (.8A) and 12V (1.8A)
Environmental Operating Conditions (Non-Condensing):
Temperature Range	50C to 600C
Relative Humidity Range	20% to 80% non-condensing
Maximum Wet Bulb Temperature	290C
Altitude Range	-50 ft to 10000 ft
Environmental Non-Operating Conditions (Non-Condensing):
Temperature Range	-400C to 650C
Relative Humidity Range	10% to 90% non-condensing
Maximum Wet Bulb Temperature	380C
Altitude Range	-50 ft to 35000 ft
3.5” 500GB SATA 7200 RPM HDD
Capacity (bytes)	500,107,862,016
Dimensions inches (W x D x H)	5.87 x 4 x 1
OptiPlex 980 Technical Guidebook	Page 34