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Seagate 750GB Momentus XT Hybrid Drive
Author: Steven Kean
Manufacturer: Seagate
Source: Seagate
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December 13, 2012

Seagate is constantly looking for ways to improve their storage solutions, with a keen focus on higher capacities and increased transfer speeds. While solid state drives are the king for speed, if you need a large amount of storage, they are very expensive. An example of this would be that it would presently cost you about $900 for a 600GB SSD. Seagate has a solution to this issue... a hybrid drive integrating SSD technology with a traditional hard drive. Seagate states that this integration, along with their Adaptive Memory technology, provides the speed of an SSD with the capacity of a typical hard drive.

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Before we take a look at what the Seagate Momentus XT hybrid drive can do, let's take a look at what Seagate tells us on their official product page:


Momentus XT solid state hybrid drives (SSHD) fuse the blazing speed of SSD with the high capacity of a hard drive. Powered by Seagate Adaptive Memory technology, SSHD dramatically improves boot times and application speed, unleashing your system's performance.

Boots and performs like an SSD
Up to 3 faster than a traditional HDD
Installs like a typical hard drive, and works with any standard laptop and major OS
SATA 6Gb/s with NCQ for interface speed


Size: 750GB
Form Factor: 2.5"
Interface Options: SATA 6Gb/s
   Spindle Speed (RPM): 7200
   Cache (MB): 32
   Transfer Rate, Max Ext (MB/s): 600
   Sustained Data Rate OD: 1.23Gb/s
   Average Latency (ms): 4.20
Reliability/Data Integrity:
   Nonrecoverable Read Errors per Bits Read: 1 in 10^14
   Annualized Failure Rate (AFR): 0.5%
Power Management:
   Seek, Typical Operating (W): 1.3, 3.3
   Idle, Typical Operating (W): 1.1
   Operating: 0 to 60C
   Non-operating: -40 to 70C
   Operating: Gs (ms) 350 (2ms)
   Non-operating: Gs (ms) 1000 (1ms)
Acoustics (bels - sound power):
   Idle: 2.3
   Operating: 2.6
   Height (in/mm): 0.378/9.7, 0.370/9.5
   Width (in/mm): 2.76/70.10, 2.750/69.85
   Length (in/mm): 3.959/100.55, 3.949/100.30
   Weight (lb/g): 0.253/115

While is taking a look at the 750GB model, there is also a 500GB model with slightly different specifications. The 500GB model offers a SATA II (3Gbps) interface instead of SATA III (6Gbps), and the SLC NAND cache size is 4GB instead of 8GB.

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