Seagate Momentus-XT Solid State Hybrid Drive E-mail
Reviews - Featured Reviews: Storage
Written by Olin Coles   
Monday, 24 May 2010
Table of Contents: Page Index
Seagate Momentus-XT Solid State Hybrid Drive
Features and Specifications
First Look: Seagate Momentus-XT
SSD Testing Methodology
AS-SSD Benchmark
ATTO Disk Benchmark
CrystalDiskMark 3.0 Tests
Iometer IOPS Performance
EVEREST Disk Benchmark
Real-World Performance
HDD vs Hybrid Drive vs SSD
Seagate Momentus-XT Conclusion

First Look: Seagate Momentus-XT

From the outside, the Seagate Momentus-XT Solid State Hybrid hard drive looks exactly like any other Seagate 2.5" notebook drive. On the inside, 4GB of Single-Layer Cell (SLC) NAND flash memory resides above a single 500GB platter. The Seagate Momentus-XT has an operating rotational speed of 7200-RPM, which is paired to 32MB of DRAM buffer memory. There are three different sizes available:

  • 500GB Momentus XT - ST95005620AS $156
  • 320GB Momentus XT - ST93205620AS $132
  • 250GB Momentus XT - ST92505610AS $113

Seagate_Momentus-XT_Solid-State-Hybrid_Corner2.jpg

Best suited for performance notebook computer installations, the Seagate Momentus-XT SSD hybrid could also be utilized for enthusiast desktop systems. Seagate Momentus-XT hybrid drives have been designed with a focus on enhancing real-world user experience while maintaining a large storage capacity. Using their new Seagate Adaptive Memory Technology, the Momentus-XT learns what programs needs to be cached to the SSD based on usage patterns.

Seagate_Momentus-XT_Solid-State-Hybrid_Open.jpg

Standard 2.5" drive bay mounting points are pre-drilled and threaded into the Momentus-XT chassis, which allows for quick upgrade or addition into any existing notebook or desktop system. The mounting positions matched up to the drive bracket on my notebook computer, and after only a few minutes of drive cloning I was quickly loading the Microsoft Windows-7 O/S without a hitch.

Seagate_Momentus-XT_Solid-State-Hybrid_Angle1.jpg

Unlike most Hard Disk Drive (HDD) storage products, SSDs are nearly impervious to impact damage and do not require (or benefit from) any kind of special vibration dampening or shock-proof enclosures. While not completely an SSD, the Seagate Momentus-XT is also very different than your average hard drive. For example, the WD VelociRaptor features and operating shock (read) value of 65G measured at 2-ms, or non-operating shock of 300G. Conversely, the Momentus-XT is safe up to 350-G's operating shock and 1000-G's non-operating.

Seagate_Momentus-XT_Solid-State-Hybrid_Corner1.jpg

Seagate resists publishing performance specifications for the Momentus-XT, but we'll soon see how well this 500GB SSD-Hybrid drive performs in the next few sections...



 

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