Originally Posted by Lethasniper007:
Question guys is the asus rt ac56u a dual core router? Would this router be good for gaming and how does it perform with 4 or more clients online? what's the from ac56u or the ac56r. Now if I had to choose from ac66u and ac56u which one? There are 2 Xbox consoles for online gaming and 2 laptops online browsing/ facebook/ YouTube
Personally, I would opt for the AC66U (and have) over the 56U for online gaming and wireless browsing and streaming. Setting aside the differences in the CPU's (both as to speed and architecture) which have been discussed here and elsewhere, the main advantages to the AC66U, in my view, are these if you are primarily counting on the router to route packets (as you no doubt would be for online gaming), and are primarily interested in wireless throughput and speed for using 802.11ac-enabled client devices:
1. External antennas-- The ac66U has three externals vs. the ac56U's two internal antennas. Generally speaking, you will get higher signal gain with the externals, and they are a bit more flexible in the sense that you can reposition them without moving the router itself (for example if you wall mount it...which I understand can't be done 56U).
2. Wireless 5ghz 802.11ac speed: 1750 MB/s (ac66U) vs 1167 MB/s (ac56U)-- 583 MB/s higher wifi speed; these are only theoretical maximum link connection speeds, but if you have a very fast connection to and from your ISP you may actually see consistently faster wireless speeds on 5ghz 802.11ac the closer your wireless clients are located to the router so that you can reach as close to the maximum link connection speeds possible. But a lot will depend on your environment and there's no way to know how one router will behave as opposed to another unless and until you actually try it out in your particular environment, and with your own particular client devices. This is why you read threads that say "XYZ router is the best" and other people say "XYZ router is crap". They all can't be right or wrong. The issue most of the time is that you really can't fix the walls absorbing all the signal or just make your neighbor who transmits on the same channel magically disappear, and a two-antenna device is just that and it won't perform the same as a three-antenna client device (generally speaking).
3. MIMO-- The ac66u can run 3x3 mimo whereas the 56u can run 2x2 mimo. This may not really be a huge factor because you need a very clean signal to get three overlapping signals rather than just two, and besides that, if you don't have 3-antenna clients then 3x3 mimo isn't going to do anything for you. But if you do, then you can theoretically achieve better results than without it.
It's been said here before, but bears repeating. If you're going to use your router for things like VPN, torrenting off a USB drive connected to the USB port on the router, etc., then you're probably going to be happier with a dual-core ARM processor device like the 56U. But if you're primarily doing gaming, online streaming, YouTube, and internet browsing/uploading and downloading, then my preference is to go for the faster implementation of the 5ghz radio capability. If your X-Boxes are all connected via GigE ports, then it probably makes no difference whether you are using the 56U or the 66U, as you're going to be limited by the X-Box's NIC in any event; and come to think of it, since the X-Box's wireless NIC is 802.11n, much of the discussion about 5ghz doesn't matter for you anyway, unless you are using a wireless bridge or repeater and you've assigned it to your 5ghz channels. And by this I mean that if you have lots of 802.11ac devices and have set your 5ghz channels to 80mhz, once you connect an 802.11n device (like an X-Box wirelessly), you're going to limit the width of your 5ghz channels to a maximum of 40mhz in any event, because you'll always drop down to the lowest 802.11 standard when connecting mixed devices (same with the 2.4ghz channels, where you'll be limited to 20mhz...which you probably should be using anyway to reduce interference...once you connect anything below an "n" device).
As always though, reasonable minds can differ, and your mileage not only may, but probably will vary from the experience of others because no one else has your particular environment to contend with, your exact clients, your ISP, etc.
Oh, one last add: If you're at all concerned about price, and not so much concerned with the factors I mentioned but plan to primarily use other features such as VPN, etc., then you probably cannot beat the 56U's price point. Amazon (U.S.) has it for $99 new whereas the ac66U's are selling for $149 (also Amazon U.S.).
And to confirm what my dear friend Gaston said (since he asked for confirmation): "U" vs. "R" does in fact pertain solely to the distribution channel, i.e., how the router is sold and distributed to consumers. "R" is used to designate "retail" (such as Best Buy), whereas "U" is used to designate online or discounters (such as Frys). And the "P" designation now used with the AC68P is apparently a new one, meant to signify a device that is exclusive to Best Buy and then only in the U.S. (and maybe Canada, but I am not sure about that). Physically, there is no difference at all between an RT-AC66U vs. an RT-AC66R, or a 56U or 56R.