Netgear CG3000v2

Overview

 * DOCSIS 3.0 8x4

Also known as CG3000-2STAUS for Optus in Australia.
 * Device Guide on optus.com.au

Forum threads

 * Netgear CG3000 V2 General Discussion on WhirlPool
 * This post suggests that the device is actually capable of three spatial streams so
 * it could support N450 speeds despite Optus' claim of "Wi-Fi speed Up to 400Mbps."