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!
Epson WorkForce ET-4550
Smart LED Bulb LB130
Linksys AC5400 MU-MIMO Gigabit router
Lexar® JumpDrive® S57 USB 3.0 flash drive
Microsoft L5V-00027 Sculpt Ergonomic Keyboard Desktop
Everki ContemPRO Roll Top Laptop Backpack
Epson EcoTank Expression ET-2500
UE Boom 2 Bluetooth speaker
3SIXT Ultra HD Sports Action Camera
Huawei Mate 9
Acer Swift 7
Epson WorkForce DS-360W
Lexar® JumpDrive® S45 USB 3.0 flash drive
Google Daydream VR headset
Belkin MIXIT Metallic Lightning to USB Cable
Logitech G403 Prodigy mouse
Lexar® Portable SSD
Dell XPS 13 laptop
Dell Inspiron 5000 series 2-in-1
Garmin Fenix Chronos smartwatch
Lexar® JumpDrive® C20c USB Type-C flash drive
Audio-Technica ATH-ANC70 Noise Cancelling Headphones
HD Pan/Tilt Wi-Fi Camera with Night Vision NC450
Surface Pro 4
HP Pavilion x360 13”
Blade 28 backpack by Arc’teryx
Lexar® Professional 1800x microSDHC™/microSDXC™ UHS-II cards
Most Popular Reviews
- 1 Star Wars Death Star Bluetooth levitating rotating speaker review
- 2 Finally! LG OLED TV 2016 range review
- 3 Fetch TV Mighty review: Better than Foxtel
- 4 Fetch TV Mini review: Make your TV a smart TV
- 5 Panasonic Viera DX900U UHD 4K smart TV review
Latest News Articles
- Western Digital begins production of the world's tallest 3D NAND 'skyscraper'
- WD will make a record-breaking 14TB hard drive available next year
- Start hoarding SSDs: Prices are expected to spike as supply gets tight
- Intel's silence on Optane SSDs raises questions about launch and focus
- Seagate crams a massive 5TB into a portable hard drive
PCW Evaluation Team
I’d happily recommend this touchscreen laptop and Windows 10 as a great way to get serious work done at a desk or on the road.
Ultimately, I think the Windows 10 environment is excellent for me as it caters for so many different uses. The inclusion of the Xbox app is also great for when you need some downtime too!
For me, the Xbox Play Anywhere is a great new feature as it allows you to play your current Xbox games with higher resolutions and better graphics without forking out extra cash for another copy. Although available titles are still scarce, but I’m sure it will grow in time.
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.
- Horizon Zero Dawn review
- How to quit Pokemon Go (or to start enjoying it again)
- Japan's pop culture, anime-friendly, J-Pop shrine, Kanda Myojin
- Which flagship TV is best? Sony 4K HDR Bravia 2016 versus LG 4K HDR OLED 2016
- 10 Blu-ray movies / Best looking Blu-ray movies
- FTDynamics AX Functional Consultant (Supply Chain Modules)VIC
- CCSAP Billing & Invoicing ConsultantNSW
- FTJunior Software Engineer - Adelaide Based (PV, NV2 or NV1 required)NSW
- FTBusiness Development Executive - Queensland Public SectorQLD
- FTHR Payroll ConsultantQLD
- FTSenior Business AnalystSA
- TPBusiness Process Analyst (Newcaslte Based)NSW
- FTJunior Software Engineer - Positive Vetting, NV2 or NV1 requiredSA
- FTOracle Forms PL/SQL Analyst ProgrammerQLD
- FTPart Time - IT Service Desk AnalystVIC
- CCData Migration Consultant - LeadNSW
- CCSenior Project Manager - ApplicationsNSW
- TPEnvironment Specialist(DevOps)QLD
- FTFull Stack DeveloperQLD
- FTLevel 3 Support AnalystVIC
- FTSenior Dot Net Backend Orientated DeveloperNSW
- TPAgile CoachNSW
- FTPerformance TesterACT
- FTTechnical Consultant MS Dynamics AXWA
- TPiOS Developer (Mobile)NSW
- TPe-Learning Developer (Captivate 8)VIC
- TPLinux Desktop Support SpecialistWA
- TPTest AnalystQLD
- CCStorage System EngineerNSW
- CCProject SpecialistVIC