Despite of many tries making hardware better there’s no better routerboard than RB1000 from Mikrotik.
RB1000 still active, It’s working for me now 3 years online, very good perfomance, no compatibility issues with another equipment.
RB1000 was built on Freescale CPU with built-in ethernet interfaces, no other cheap parts like atheros etc., just All-In-chip router with hardware encryption.
I think that today Mikrotik want to save manufacturing costs on cheap chinese chips 
Yes. It’s the best routerboard of all times. 2xRB1000 running our Gigabit BGP Uplinks.
Uptime = 252d / 255d. Rocksolid Hardware.
MUM’s participants, please force MT to renew and continue manufacturing RB1000 such as RB1000 x2 on next meeting in Poland.
I attached CPU’s (MPC8572) datasheet, that’s like CPU on RB1000 (MPC8547), 1333MHz, 4 x 1 Gbps NIC’s but with 2 cores, specs are excellent.
Give them advise to manufacture product that users like and is not based on chinese garbage.
MPC8572EEC.pdf (1.74 MB)
MPC8548EEC.pdf (844 KB)
on the other note, if you go for RB1100AHx2/RB1100AH and use it in similar scenarios as RB1000 you are using now you will see that it will perform on par with RB1000 and x2 will outperform it hands down
RB1100x uses atheros switch chips for multiplying ethernet ports, they are faulty and degrade router’s performance.
Better to use native 4 MPC CPU’s built-in 1Gbps ethernet interfaces. 4 gigabit ports is quiet enough for routing tasks vs routhers throughput.
There have many problems with Atheros switch chips connecting to cisco devices, such as bonding doesn’t work, etc.
As I previously posted, Freescale offers CPU MPC8572 like RB1000, but with 2 cores, the same FSB. I think, it perform better than CPU installed in RB1100AHx2
Returning to important question, how many lan ports connected directly to CPU of RB1100AH/RB1100AHx2?
RB1100AH x2 uses P2020 Freescale CPU, has 3 Gigabit ethernet (lan) ports.
See attached pdf
Even RB1100AH x2 uses P2020, MPC8572 with two cores (by architecture like single core MPC8547 on RB1000) is better.
Mikrotik, please, give us back renewed RB1000 x2 with MPC8572 dual core CPU on it!!!
QP20XXFS.pdf (196 KB)
Yes, we need MPC8572 with 4 ports, extra low end Atheros switches pretty useless.
Interesting, that RB1100AH x2 CPU can be clocked to 1.2GHz but system uses 1066MHz, it’s a cooling problem.
Do you mean that bonding from ports on the Atheros switch chips does not work ?
This would explain some truly bizarre behavior I have seen when trying to use bonding from ports 6 and 7 on an RB1200 to an external switch. e.g. sessions changing paths, failback not working correctly, arp issues
yes, this was one of the problems.
OK, I will log a ticket with support and see how I get on 
This switch chip problem has got me wondering if the problems I am having are caused by them.
I have been getting some strange things happening when the traffic passing through the network goes up, the traffic suddenly drops on the backhaul which is directly connected to port 11 and also on the wireless bridge links that are connected to ports that are switched.
We have been looking at cable ends, POE Supplies, interference all sorts things all to no avail.
How can I tell if it is these switch chips in the RB1100 AHx2