Seagate Momentus 7200.4 (ST9500420AS) hard drive
Seagate's Momentus 7200.4 is a 7200rpm hard drive that will fit in a notebook
- Very fast read/write speeds, relatively good price per gigabyte
- Vibrates more than a 5400rpm laptop hard drive
The Seagate Momentus 7200.4 (ST9500420AS) is a laptop hard drive that offers faster read/write speeds than many larger desktop hard drives. If you need a fast and cool hard drive for laptops, media centre PCs or network-attached storage (NAS) devices, this is worth a look.
Price$ 217.00 (AUD)
The Seagate Momentus 7200.4 (ST9500420AS) is a 500GB 2.5in hard drive with a spin speed of 7200rpm and a 16MB cache. Despite being small enough to fit in a laptop drive bay it is faster than many 3.5in hard drives designed for desktop PCs.
The Seagate Momentus 7200.4 is faster than 5400rpm laptop drives we've tested, such as the Western Digital Scorpio Blue (WD5000BEVT) and the Seagate Momentus 5400.4 250GB (ST9250827AS). This was shown in our transfer tests.
We copied 19.4GB of files from our testbed PC, which uses a Western Digital Velociraptor (WD3000GLFS), and recorded a write speed of 77.2 megabytes per second and a read speed of 85.99MBps. Duplicating data on the Momentus hard drive (copying data from one folder on the drive to another), was achieved at a rate of 25.63MBps. This is an excellent result, especially given that many desktop hard drives such as the Hitachi Deskstar 7K1000.B (HDT721010SLA360) and the Seagate Barracuda 7200.11 1.5TB aren't as fast.
Out in the open, the Seagate Momentus 7200.4 ran at an average temperature of 30 degrees Celsius. This is nine degrees cooler than a typical 3.5in hard drive. Because it's as fast as a desktop drive and has such a large capacity, it's a good hard drive to use in a PC case in which space is at a premium (such as a media centre). The relatively low heat production means you can use a couple of these drives in a RAID array in a cramped case without worrying about them overheating.
As well as delivering faster performance, the higher spin speed results in a higher level of vibration. When we installed the Seagate Momentus 7200.4 (ST9500420AS) hard drive in a 15.4in laptop, its level of vibration was more noticeable through the palm rest than it was when we installed a 5400rpm Western Digital Scorpio (WD3200BEVT).
The Seagate Momentus 7200.4 (ST9500420AS) has a formatted capacity of 465GB and a cost per gigabyte of 47 cents. While this is expensive when compared to desktop hard drives such as the Hitachi Deskstar 7K1000.B (HDT721010SLA360), which has a cost per formatted gigabyte of 26.7 cents, it is competitive for a notebook drive. It is slightly cheaper than the 55.7 cents per formatted gigabyte of the Western Digital Scorpio Blue (WD5000BEVT).
The Seagate Momentus 7200.4 (ST9500420AS) will be useful if you're after a high-performance laptop hard drive for tasks like video editing or playing games. It's also worth a look if you're building a fast and cool media centre for your home entertainment system.
Join the Good Gear Guide newsletter!
Most Popular Reviews
- 1 Mazda MX-5 (2016) review: Absolute driving purity
- 2 Sony 75-inch UHD TV (X9400C) review: Sony and Android are a winning duo
- 3 LG 55EG960T OLED UHD TV
- 4 Panasonic Viera UHD TV review: good hardware, fragmented software
- 5 Microsoft Lumia 640 review: Honouring Nokia's legacy
Best Deals on Good Gear Guide
Latest News Articles
- Akitio's combines two speedy technologies in blazing external SSD
- Intel claims storage supremacy with swift 3D XPoint Optane drives, 1-petabyte 3D NAND
- Intel's new super-fast SSDs feature 3D NAND
- Samsung begins shipping redonkulous 15.36TB SSD
- Seagate releases the first 2TB ultra-slim HDD
GGG Evaluation Team
First impression on unpacking the Q702 test unit was the solid feel and clean, minimalist styling.
For work use, Microsoft Word and Excel programs pre-installed on the device are adequate for preparing short documents.
The Fujitsu LifeBook UH574 allowed for great mobility without being obnoxiously heavy or clunky. Its twelve hours of battery life did not disappoint.
The screen was particularly good. It is bright and visible from most angles, however heat is an issue, particularly around the Windows button on the front, and on the back where the battery housing is located.
My first impression after unboxing the Q702 is that it is a nice looking unit. Styling is somewhat minimalist but very effective. The tablet part, once detached, has a nice weight, and no buttons or switches are located in awkward or intrusive positions.
- CCSenior Technical WriterVIC
- CCAnalyst Programmer (Lotus Notes/Networking) 160504/AP/781Asia
- FTFront End DeveloperVIC
- CCWeb AdministratorACT
- CCData AnalystVIC
- CCNV1 | System admin with SQL server experience for Defence Application SupportACT
- CCContract Analyst/Programmer II (Drupal 7.39/PHP) 160427/CAP/vccAsia
- CCNV2 - System Administration / Application SupportACT
- CCBusiness AnalystACT
- CCEnvironment ManagerVIC
- CCChange Manager x 2NSW
- CCJava Developer (front end)WA
- CCJava Developer - multiple opportunitiesNSW
- FTSoftware Design Engineer (Embedded Software)SA
- FTSystem EngineerACT
- CCSenior Project ManagerVIC
- CCSenior Project Manager - HealthcareVIC
- FTSenior Application SpecialistACT
- FTDigital Project ManagerVIC
- FTSolution ArchitectVIC
- CCICT Project Manager - Contact Centre/Telephony FocusNSW
- FTHands-on Service Desk Team Lead | Blackburn | Managed Service ProviderVIC
- FTSecurity Accreditation - IT Security AnalystACT
- FTSenior Project Manager, SoftwareNSW
- CCSenior DevOps ConsultantVIC