G-Technology G-Drive Slim 320GB review

Is this slim drive big on performance?

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  • Lightweight and slim
  • A good price
  • Pre-formatted for Macs


  • No bundled extras

Currently an Apple Store exclusive, this portable USB drive is based on Hitachi’s Travelstar Z5K320 HDD. At only 7mm deep, it’s around 36% more space efficient than standard 2.5-inch drives, allowing for a casing that’s less than a centimetre thick.

The G-Drive Slim 320GB boasts a robust, stylish build, with a solid aluminium enclosure bound by a black rubberised border. In common with other G-Drives, it also has an attractive desktop icon.

It comes preformatted for Macs, and the casing does a great job of keeping the drive cool, which was backed up in tests.

In our QuickBench tests, the G-Drive Slim 320GB achieved random read speeds of 11.747 MB/s, which is pretty fast, compared to similar portable USB drives. Its random write speed of 11.414 MB/s is a little slower than we’re used to, but marginally so.

A competent but unremarkable performance is exactly what you’d expect from a drive operating using a USB connection, and that’s exactly what we got. It worked well under sub-optimal power conditions, mounting via an unpowered USB hub, and even when plugged into a fullsized aluminium keyboard.

The G-Drive Slim 320GB lacks bundled extras. There are no accessories beyond a USB cable, no FireWire connectivity and no software. But if you’re looking for a solid, reliable and very portable 2.5-inch-format drive, the slim is ideal.

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Tech Specs

Product TypeHard Drive
Form FactorExternal
Storage Capacity320 GB
Rotational Speed5400 rpm
Host InterfaceUSB 2.0
Height9.9 mm
Width82.0 mm
Depth129.0 mm
ManufacturerHitachi Global Storage Technologies
Product Model0G01892
Product NameG-Drive Slim Hard Drive
Product LineG-DRIVE slim
Manufacturer Part Number0G01892
Manufacturer Website Addresswww.hitachigst.com
Marketing Information

G-DRIVE slim hard drives are the perfect hard drive for someone on the go. G-DRIVE slim fits in your pocket and looks cool! Travel around with 320GB of Hitachi disk drive storage space ideal for important documents, MP3s, and digital photo files. G-DRIVE slim is formatted for your Mac and Time Machine Ready, making it an easy plug-and-play storage device. Built for those on the move, G-DRIVE slim is made with a light-weight aluminum enclosure. Portability has never looked so good!

Weight (Approximate)150.00 mg