G-Technology G-Drive 4TB review

Here’s why spinning disks are still the way to go for pure storage

G-Technology G-Drive 4TB
The G-Technology G-Drive 4TB delivers some great read/write speeds with a minimalist design.

TechRadar Verdict

The G-Drive is a solid external hard drive that delivers some great read/write speeds at a decent price with a minimalist design.


  • +

    Super performance

  • +

    USB Type-C v2


  • -

    Far bigger than we were expecting

  • -

    Only average in terms of pricing

Why you can trust TechRadar We spend hours testing every product or service we review, so you can be sure you’re buying the best. Find out more about how we test.

The G-Technology G-Drive 4TB is one of the most popular external hard drives drives today, and it’s not hard to understand why.

Solid state drives (SSDs) aren’t just all the rage these days. They have all but displaced spinning hard disk drives, as they’re simply better in a lot of ways for most end-user devices. SSDs boast low power consumption, faster performance and shock resistance.

There are ways in which HDDs still rule the roost. SSDs have come a long way as well in terms of cost per unit storage, but they haven’t caught up to the affordability of HDDs. Hard drives are still much more affordable, especially for multi-terabyte capacities.

The G-Technology G-Drive, for example, costs as little as £153 (around $215) for the 4TB model with the 6TB model available for only £20 more. You will be hard pressed to find a 1TB external SSD for less than £300 (G-Tech’s very own G-Drive being the exception at less than £200).

Affordability aside, is the G-Technology G-Drive 4TB worth it? Well, it delivers some great read/write speeds with a minimalist design. In short, absolutely.

And, with Black Friday and Cyber Monday just around the corner, it might just get cheaper than it’s ever been.

G-Technology G-Drive 4TB

The G-Technology G-Drive 4TB is a relatively large piece of kit at 196 x 128.5 x 35.3mm.


Designed to match the Apple product range, the G-Technology G-Drive external hard disk features an all-aluminum enclosure with an illuminated ‘G’ logo and air vents (to cool the drive) on the front. A large ‘G’ adorns the top of the device and there’s a power switch, a USB Type-C connector (Gen 1 so only up to 5Gbps) and a power socket at the back.

It is a relatively large piece of kit at 196 x 128.5 x 35.3mm with a weight of just over 1kg, and that’s because of the 3.5-inch hard disk drive that’s inside.

G-Technology G-Drive 4TB

The G-Technology G-Drive 4TB can charge your MacBook or MacBook Pro.

In addition, a wieldy 19V, 3.42A (65W) power supply unit accompanies the device, which is at odds with the minimalist design of the drive. Four rubber feet plus the usual details (serial number, barcode) are located on the base of the device.

The drive can even charge your MacBook or MacBook Pro (or indeed any recent laptops that support Power Delivery).

G-Technology G-Drive 4TB

It has been fine-tuned to deliver cooler temperatures in use and targets NAS users.

Usage and performance

The G-Drive external drive is plug-and-play on Apple Mac and can be easily reformatted for Windows. It is also Time Machine ready so you will be able to quickly backup all your files.

Pry open this drive and you will find a Western Digital WD40EMRX-82UZ0N0, otherwise known as the WD Red. This is a 4TB hard disk drive spinning at 5400RPM with 64MB cache – a storage device that has been fine-tuned to deliver cooler temperatures in use and targets NAS users.

There is a 10TB model – with a staggering 256MB cache – available directly from G-Technology in the US for $370 (around £260) but it is not yet available in the UK.

WD says that its Red range has features such as NAS compatibility, increased reliability, error recovery controls as well as noise and vibration protection that make it a great choice for use cases that require better reliability than your run-of-the-mill hard disk drive.

Not surprisingly, the drive comes with a three-year limited warranty, plus a pair of USB Type-C cables and extra plugs for mainland Europe territories.

The drive achieved some great numbers on CrystalDiskMark hitting 180MBps and 152.6MBps on sequential read/write benchmarks respectively, while reaching 182MBps and 184MBps with sequential read/write speeds on the popular ATTO disk benchmark. That’s not far from the ‘up to’ transfer rates of 195MBps claimed by the manufacturer.

As expected the drive warmed up a bit during our testing, but this represented nothing alarming for a storage device that is expected to be powered on 24/7.

G-Technology G-Drive 4TB

The drive achieved some great numbers on CrystalDiskMark.

The competition

There’s plenty of competition out there both from Western Digital – the parent company of G-Technology – and from others, although few can match the level of reliability set by the G-Drive.

There are, for example, plenty of 2.5-inch external hard disk drives that cost about £100 (around $140). However, leaving those to run 24/7 is not advisable because they were not designed from the ground up to work that way.

Western Digital has a 4TB Elements drive for around £100 ($140) and a 4TB WD My Book desktop hard drive, while Seagate-owned LaCie sells a 4TB Porsche Design USB-C drive – that targets the same audience as the G-Drive – and a high performance drive called the D2 that is surprisingly inexpensive.

G-Technology G-Drive 4TB

The G-Technology G-Drive 4TB is still very much competitive with rivals launched in 2017.

Final verdict

The G-Drive external HDD shows that spinning hard drives still have their place in an increasingly SSD-centric marketplace. This product hits a good balance between being relatively affordable and suitably capacious.

Although it was launched more than a year ago, the G-Drive is still very much competitive with rivals launched in 2017. It is fast, reasonably well built, compatible with Apple products and has a faster implementation of USB Type-C.

It would be great if G-Technology decided to produce a mini version of this drive (or even simply shrink the current device for a new 2018 offering), and also introduced a 2TB version to compete with Samsung. Making it waterproof would be the icing on the cake but that’s unlikely to happen, mainly because that would put it in direct competition with SanDisk products, another sub-brand of Western Digital.

Desire Athow
Managing Editor, TechRadar Pro

Désiré has been musing and writing about technology during a career spanning four decades. He dabbled in website builders and web hosting when DHTML and frames were in vogue and started narrating about the impact of technology on society just before the start of the Y2K hysteria at the turn of the last millennium.