The initial batch of 802.11ac routers shipped with the dated and inefficient BCM4706 (based on a 600 MHz MIPS32 CPU). Broadcom made some amends last year with the BCM4708x / BCM5301x targeting the SOHO and SMB space respectively. Today, Broadcom is introducing the StrataGX BCM5862x to satisfy the market demand for SMB storage routers.
Broadcom has made some evolutionary updates to the BCM5301x in order to increase performance and simplify design.
http://www.anandtech.com/show/7018/b...endly-bcm5862x