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 PC World newsletter!
Everki ContemPRO Roll Top Laptop Backpack
Microsoft L5V-00027 Sculpt Ergonomic Keyboard Desktop
Lexar® JumpDrive® S57 USB 3.0 flash drive
Epson EcoTank Expression ET-2500
Samsung portable 1TB T3 drive
UE Boom 2 Bluetooth speaker
Epson WorkForce ET-4550
Smart LED Bulb LB130
Google Daydream VR headset
Epson WorkForce DS-360W
Logitech G403 Prodigy mouse
Lexar® JumpDrive® S45 USB 3.0 flash drive
Lexar® Portable SSD
Acer Swift 7
3SIXT Ultra HD Sports Action Camera
Huawei Mate 9
Belkin MIXIT Metallic Lightning to USB Cable
Lexar® JumpDrive® C20c USB Type-C flash drive
HD Pan/Tilt Wi-Fi Camera with Night Vision NC450
Dell Inspiron 5000 series 2-in-1
Audio-Technica ATH-ANC70 Noise Cancelling Headphones
Lexar® Professional 1800x microSDHC™/microSDXC™ UHS-II cards
Blade 28 backpack by Arc’teryx
Garmin Fenix Chronos smartwatch
Surface Pro 4
HP Pavilion x360 13”
Dell XPS 13 laptop
Most Popular Reviews
- 1 Oppo R9s Plus phone: Full, in-depth review
- 2 Samsung 2017 QLED Q7 TV: Full, in-depth review
- 3 HTC U Ultra phone full, in-depth review
- 4 Gigabyte Aorus GA-AX370-Gaming 5 AMD Ryzen AM4 motherboard review
- 5 Kogan curved 4K UHD 55-inch LED LCD TV review
Latest News Articles
- MIT researchers set out to create self-assembling chips
- Micron to ship Intel Optane competitor later this year
- Intel Optane Memory has a mission: Make hard drives faster than SSDs
- AMD busts Ryzen performance myths, clearing Windows 10 from blame
- Nvidia supercharges GeForce DirectX 12 performance with new Game Ready driver
PCW Evaluation Team
A smarter way to print for busy small business owners, combining speedy printing with scanning and copying, making it easier to produce high quality documents and images at a touch of a button.
I've had a multifunction printer in the office going on 10 years now. It was a neat bit of kit back in the day -- print, copy, scan, fax -- when printing over WiFi felt a bit like magic. It’s seen better days though and an upgrade’s well overdue. This HP OfficeJet Pro 8730 looks like it ticks all the same boxes: print, copy, scan, and fax. (Really? Does anyone fax anything any more? I guess it's good to know the facility’s there, just in case.) Printing over WiFi is more-or- less standard these days.
As a freelance writer who is always on the go, I like my technology to be both efficient and effective so I can do my job well. The HP OfficeJet Pro 8730 Inkjet Printer ticks all the boxes in terms of form factor, performance and user interface.
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.
- Samsung Galaxy A5 2017 phone: Full, in-depth review
- LG G6: unboxing, hands on review and detail shots
- And the 2017 winner of the Formula 1 Best Pit Lane Boom Gantry is...
- What's the difference between an Intel Core i3, i5 and i7?
- Laser vs. inkjet printers: which is better?
- FTSocial Media ExecutiveNSW
- FTDocumentation AnalystNSW
- FTCitrix EngineerNSW
- FTSnr Salesforce Technical Consultant/Architect Global IT Company - SydneyNSW
- TPMedia AssistantNSW
- CC3 x UX Designers - 3 month contract initially - IT Services company - SydneyNSW
- FTSenior Automation Test AnalystNSW
- FTJunior DevOps Developer - TelcoVIC
- FTSecurity Monitoring SpecialistVIC
- FTLevel 2 Technical Support OfficerQLD
- CCSenior Business Analyst - Forecasting SASNSW
- FTSenior Oracle DeveloperVIC
- FTNetwork Engineer - Cisco VoiceWA
- FTSenior Java DeveloperQLD
- TPBusiness Analyst - HealthQLD
- FTSenior .Net Developer (Silverlight)VIC
- CCLevel 1 IT Support OfficerACT
- FTNetwork Services ManagerQLD
- FTSolution Architect (e-Health)NSW
- FTSenior .NET DeveloperVIC
- CCITCM EngineerNSW
- CCUX DesignerVIC
- FTSolution Architect l MS Exchange, O365NSW
- TPBusiness AnalystQLD
- TP.Net Software DeveloperQLD