ASUS RT-AC66U 802.11ac Dual-Band Wireless-AC1750 Gigabit Router Reviewed 
Routing Performance
	Code:
	Test Description  	RT-AC66U
WAN - LAN 	        836 Mbps
LAN - WAN 	        839 Mbps
Total Simultaneous 	819 Mbps
Maximum Connections 	30,069
Firmware Version 	3.0.0.4.164
 Storage Performance
	Code:
	 	 	ASUS  Buffalo  NETGEAR  ASUS
 	     RT-AC66U WZRD1800  R6300  RT-N66U
FAT32 Write 	9.0 	7.3 	8.6 	10
FAT32 Read 	9.9 	11.8 	10.2 	12
NTFS Write 	13.5 	8.4 	11.3 	17
NTFS Read 	9.4 	8.7 	10.3 	11
 
All three use the same Broadcom BCM4706 CPU. At 256 MB, the AC66U has double the memory of the other two routers, 
but the same amount of flash. The same Broadcom BCM4331/BCM4360 radio SoCs are used in all three products. 
But the ASUS is the only one of the three to use dual-band external antennas vs. six internal single-band. This means the 
external circuitry connecting the radio SoCs to the antennas is different. It looks like the Skyworks 5 GHz amplifiers made it 
into ASUS' design. The BCM4360 5 GHz radio is toward the top of the photo; the BCM4331 2.4 GHz radio is toward the bottom.

Removing the bottom plate revealed 128 MB of Samsung flash (K9F1G08U0D) and 2 MB of Macronix serial flash (25L1606E). 
There are no thermal pads connecting the plate to the board, so thermal connection must be made from board inner layers 
through the six metal standoffs that connect the plate to the board.

http://www.smallnetbuilder.com/wirel...outer-reviewed 