I have an Asus RT56U and I am also getting FTTH/P in the next 2 weeks. I also have been running Various Firewalls in a VM using a HP Microserver N36L. This has been ideal for this purpose and costs with rebate around £120. Its been very useful I also recorded all my TV through it using DVB Viewer.
I am not sure if it will suffice for your requirements, but I have a Intel CT 1Gb card and with the Broadcom onboard I can saturate the LAN with my Adaptec Raided drives. It's more powerful than an Intel draws 45 watts with all drives in place. It presently has Untangle on providing my internal network .
Just a thought you might want to consider. I haven't though as yet tried PPPoe connection. I am currently using a Draytek Vigor 100 in between before the Asus on my present connection, and then to the Untangle box This has been an interesting read and perhaps now that you have also posted your power usuage for the N66. Perhaps I will try the Microserver when i get the new connection, and just use the Asus as a access point.
Maybe you should look into this hardware.
@ post above I also have padavans firmware the Asus was rubbish on the standard firmware before. Port 21 was open all time etc. I don't know if this also would have been worth trying on the router you are returning.
A question though regarding the points you made Rotor.
I know this is a different router the 56, but from the same family of routers. In this firmware of padavans he has enabled
Activated complete HW_NAT offload on both directions for WAN PPPoE (~900 Mbit/s)
Padavans firmware.
You also stated how did smallnetbuilders test their routers. I have found an interesting test/review from Bjorn3d.com, but no real mention of PPPoE loading though.
Bjorn3D Review
My initial connection will be FFTP/H but I will be only taking 76 service at first so no real problem I have the hardware here to move to higher if the Asus isn't upto spec, but when I subscribe to 160 and above then perhaps I will test your assumptions.
Further research has lead me to believe that the router doesn't suffer the CPU problem as some are getting over 430mpbs via PPPoE with this router and the firmware. Also if you see this post they show a speedtest and padavan replies to inform the actual throughput available with PPPoE enabled.
To Gon�alo
N56U performance on IPoE and PPPoE connection:
WAN -> LAN 930Mbps
WAN <- LAN 890Mbps
Tested by iperf
Edited by deleted (Wed 20-Feb-13 07:47:28)