Zotac NITRO OC Controller

Features:
World’s first hardware OC controller for ZOTAC GeForce series graphics cards
Simple ZOTAC GPU overclocking
High-quality VFD display
Adjust GPU engine, shader and memory clocks (+/- 5 MHz increments)
Adjust fan speed
Monitor GPU temperature
Easy to use user interface

System requirements:
ZOTAC GeForce series graphics card
USB 2.0/1.1 port
Windows XP/Vista
Dimensions: (W)6.08inches - 154.51mm X (H)3.35inches - 85mm