Seagate Momentus XT / Laptop SSHD Momentus XT Product Manual - Page 9

Drive specifications

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2.0 Drive specifications Unless otherwise noted, all specifications are measured under ambient conditions, at 25°C, and nominal power. 2.1 Specification summary table The specifications listed in this table are for quick reference. For details on specification measurement or definition, see the appropriate section of this manual. Table 1: Drive specifications Drive specification ST95005620AS ST93205620AS Formatted GB (512 bytes/sector)* Guaranteed sectors Bytes per sector Physical read/write heads Discs Cache (MB) Recording density in BPI (bits/in max) Track density TPI (tracks/in max) Areal density (Gb/in2 max) Spindle speed (RPM) Average latency (ms) Internal transfer rate (Gb/s max) I/O data transfer rate (Gb/s max) 500 976,773,168 512 4 2 32 1,490k 265k 394 7200 4.17 1.23 3.0 320 625,142,448 3 ATA data-transfer modes supported Height (max) Width (max) SATA 1.0, Serial ATA Revision 2.6 PIO modes 0-4 Multiword DMA modes 0-2 Ultra DMA modes 0-6 9.5 +/- 0.2 mm (0.370 +/- .008 in) 69.85 +/- 0.25 mm (2.750 +/- 0.010 in) Length (max) 100.35 +0.20 / -0.25 mm (3.951 +0 .008 / -0.010 in) Weight (max) 110 g (0.238 lb) Power-on to ready (sec typical) 4.5 Standby to ready (sec typical) 3.0 Track-to-track seek time, read (msec typical) 1.5 Average seek, read (ms typical) 11.0 Average seek, write (ms typical) 13.0 Startup current, +5V amps (max) 1.0 Seek power (watts typical) 2.2 ST92505610AS 250 488,397,168 2 1 105 g (0.227 lb) Momentus XT Product Manual, Rev. B 3

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Momentus XT Product Manual, Rev. B
3
2.0
Drive specifications
Unless otherwise noted, all specifications are measured under ambient conditions, at 25°C, and nominal
power.
2.1
Specification summary table
The specifications listed in this table are for quick reference. For details on specification measurement or defi-
nition, see the appropriate section of this manual.
Table 1:
Drive specifications
Drive specification
ST95005620AS
ST93205620AS
ST92505610AS
Formatted GB (512 bytes/sector)*
500
320
250
Guaranteed sectors
976,773,168
625,142,448
488,397,168
Bytes per sector
512
Physical read/write heads
4
3
2
Discs
2
1
Cache (MB)
32
Recording density in BPI (bits/in max)
1,490k
Track density TPI (tracks/in max)
265k
Areal density (Gb/in
2
max)
394
Spindle speed (RPM)
7200
Average latency (ms)
4.17
Internal transfer rate (Gb/s max)
1.23
I/O data transfer rate (Gb/s max)
3.0
ATA data-transfer modes supported
SATA 1.0, Serial ATA Revision 2.6
PIO modes 0–4
Multiword DMA modes 0–2
Ultra DMA modes 0–6
Height (max)
9.5 +/- 0.2 mm (0.370 +/- .008 in)
Width (max)
69.85 +/- 0.25 mm (2.750 +/- 0.010 in)
Length (max)
100.35 +0.20 / -0.25 mm (3.951 +0 .008 / -0.010
in)
Weight (max)
110 g (0.238 lb)
105 g (0.227 lb)
Power-on to ready (sec typical)
4.5
Standby to ready (sec typical)
3.0
Track-to-track seek time, read (msec typical)
1.5
Average seek, read (ms typical)
11.0
Average seek, write (ms typical)
13.0
Startup current, +5V amps (max)
1.0
Seek power (watts typical)
2.2