The 3G infrared sensor in the Razer DeathAdder enables movement speeds at 2.25 times faster when compared to a standard 800dpi optical sensor and also boasts a response time of 1ms, as compared to that of 125Hz / 8ms found in conventional gaming mice.
Check out the specs:
* 1800dpi Razer Precision 3G infrared sensor
* Ergonomic right-handed design
* 1000Hz Ultrapolling / 1ms response
* Five independently programmable Hyperesponse buttons
* On-The-Fly Sensitivity adjustment
* Always-On mode
* Ultra-large non-slip buttons
* 16-bit ultra-wide data path
* 6400 frames per second (5.8 megapixels per second)
* 60–120 inches per second and 15g of acceleration
* Zero-acoustic Ultraslick Teflon feet
* Gold-plated USB connector
* Seven-foot, lightweight, non-tangle cord
* Approximate size: 128mm (length) x 70mm (width) x 42.5mm (height)

System Requirements
* Mac/PC with USB port
* Mac OS X (v10.4 and above) or Windows XP/x64/Vista/Vista64
* Internet connection (for driver installation)
* CD-ROM drive
* 35MB free hard disk space
The Razer DeathAdder is on sale at a RRP of £59.99.