Seagate ST3250824SCE manual Drive specifications for 500 and 400 Gbyte models, ST3500841SCE

Table 1:	Drive specifications for 500 and 400 Gbyte models
Drive specification		ST3500841SCE	ST3400833SCE
Formatted Gbytes (512 bytes/sector)*		500	400
Guaranteed sectors		976,773,168	781,422,768
Bytes per sector		512
Default sectors per track		63
Default read/write heads		16
Default cylinders		16,383
Recording density in BPI (kbits/inch max)		790.1
Track density TPI (ktracks/inch avg)		124.5
Areal density (Gbits/inch2 avg)		97.96
Spindle speed (RPM)		7,200
Internal data transfer rate (Mbits/sec max)		815.2
Sustained transfer rate (Mbytes/sec max)		65
I/O data transfer rate (Mbytes/sec max)		300
ATA data-transfer modes supported		PIO modes 0–4
		Multiword DMA modes 0–2
		Ultra DMA modes 0–6
SATA data-transfer modes supported		3.0 Gbits/sec
		1.5 Gbits/sec
Cache buffer		8 Mbytes
Height (max)		26.1 mm (1.028 inches)
Width (max)		101.6 mm (4.000 inches) +/-0.010 inches
Length (max)		146.99 mm (5.787 inches)
Weight (max) grams		710 grams
Average latency (msec)		4.16
Power-on to ready (typical)		16 sec
Standby to ready (typical)		16 sec
Track-to-track seek time (msec typical)		<0.8 (read), <1.0 (write)
Average seek (msec typical)		18 (read), 20 (write)
Startup current (typical) 12V (peak)		2.0 amps
Seek power (typical)		12.60 watts
Operating (Consumer Storage Profile)		9.20 watts
Operating (PVR Storage Profile)		4.88 watts
Idle mode (typical)		8.00 watts
Standby mode (typical)		0.800 watts
Sleep mode (typical)		0.800 watts
Voltage tolerance		5V ± 5%
(including noise)		12V ± 10%
Ambient temperature		0° to 60°C (operating)
		–40° to 70°C (nonoperating)
Temperature gradient		20°C (operating)
(°C per hour max)		30°C (nonoperating)
Relative humidity		5% to 90% (operating)
		5% to 95% (nonoperating)
Relative humidity gradient		30% per hour max
Wet bulb temperature		37.7 (operating)
(°C max)		40.0 (nonoperating)
Altitude, operating		–60.96 m to 3,048 m
		(–200 ft to 10,000+ ft)

4 DB35.2 Serial ATA Product Manual, Rev. C