DriveStation™ DDR

Capacity and speed. External Hard Drive.

Product Data Sheet

DriveStation™ DDR

Capacity and speed. External Hard Drive.

Buffalo Technology’s new dynamic random-access memory external hard drive is capable of extremely fast data-transfer speeds with an extra-large 1GB cache. With the DRAM cache function enabled, the HD-GDU3 series hard drive efficiently buffers files during jobs enabling write speeds up to 400 MBs. Ready to copy 1,000 – 800MB – photos? You’ll be done in about 3.5 seconds! Read speed is also impressive via the DRAM cache enabling speeds of up to 300 MBs which equates to approximately 1,000 – 800 MB – photos in 6.2 seconds. Best of all, Buffalo is able to bring you this impressive technology in an affordable package, while still maintaining the quality you’ve come to know and expect.

Total Capacity

2TB, 3TB

Number of Drives


Drive Type

HDD 3.5"

Drive Interface


Backup Utility from Buffalo for automatic data backup

Automatically backs up your Windows PCs and protects your data.

Plug and play

Plug and play connectivity: Simply plug the hard drive into a USB port on your computer or other device. No driver installation or complicated configuration is required.

SuperSpeed USB 3.0

Equipped with super-fast USB 3.0, but also supports standard USB 2.0 port, no adjustment required, just connect to a USB 2.0 port.

TurboPC EX provides even more power

The new TurboPC EX function increases the performance of TurboPC through faster data transfer and copying speeds. This allows files to be saved, copied and transferred even faster.

Internal Hard Drives

Number of Drives
Drive Type
HDD 3.5"
Total Capacity
2TB, 3TB
Drive Interface

USB Interface

Standard Compliance
USB 3.0
Connector Type
USB 3.0 Type B
USB 3.0 Ports
Max Transmission Rate
Max: 5 Gb/s


Additional Cache
1GB DDR3 RAM module
Client OS
Windows 10, Windows 8.1, Windows 8, Windows 7, Windows Vista, Windows XP, Mac OS X 10.5 or later
45x202x126 mm
Operating Environment
Power Consumption (max,)
18 Watts
Power Supply
External AC 100-240V, 50/60Hz
Power Management System
Special Features
DDR3 Dram Cache Technology for super speed and large capacity

Product Part Numbers

Product Code
HD-GD2.0U3-EU, HD-GD3.0U3-EU
Manuals / Setup / Latest Product Information
Documentation & Software --
Release notes 1.00 Windows 31-01-2014
Firmware updater 1.00 Windows 31-01-2014
Release notes 1.40 Windows 26-09-2016
TurboPC EX 1.40 Windows 26-09-2016
CD Images
Release notes 1.01 Windows 16-12-2013
DriveNavigator 1.01 Windows 16-12-2013