Asus RT-AC87U Review

Asus RT-AC87U is one of the fastest wireless router available when it first released. The RT-AC87U support 4 spatial streams and MU-MIMO as part of Quantenna’s Wave 2 features. As a result, the performance is blistering fast especially when paired with the Asus EA-AC87 as media bridge. However, as device manufacturers are still catching up with wireless development, you can expect getting around 500Mbps on most devices currently.

[one_half]Quick Specs:

  • 4 Gigabit Ethernet port
  • 128MB Flash and 256MB RAM
  • Compatible with Unifi/Maxis Fibre
  • Dual-Band Wireless AC-2400 (1734+600Mbps)
  • Refer to Asus Website for detailed specifications
  • Wikidevi article on hardware specifications


Asus RT-AC87U included accessories.
Included accessories


Hardware and Design

Asus RT-AC87U

This RT-AC87U design looks closely adhered to Asus’ ROG design language. It’s sexy and edgy with a matte finish all over the device. The blue LEDs can be turned off if you prefer a subtler looks.

There’re 4 external antennas which allow 4×4 MU-MIMO, one of the fastest wireless AC implementation currently. The USB 3.0 port is hidden under the lid in front for easy access.

Unifi Compatibility

Unifi compatibility is perfect on Asus RT-AC87U as expected, HyppTV works really well. If you are having problems with configuring this device, you can refer to my Asus Unifi configuration guide here. Unsurprisingly, IPV6 is working on this router as usual. Beside, Maxis Fibre is working on this router as well. However, I do not test the compatibility with Maxis VOIP and Astro IPTV.


Performance is great on this router. I configured the router to share my external hard disk on the network via Samba and it was great. I was able to stream 1080p movie smoothly over wireless. Unfortunately, I did not conduct a proper benchmark to show the performance.

Another interesting feature is hardware-accelerated NAT which allow full 1Gbit LAN to WAN connectivity. It is going to be useful in other countries such as Singapore where 1Gbps connection is available now. This is expected on a router this price anyway.

Wireless Testing

Asus RT-AC87U is one of the fastest wireless routers on the market right now and I expect the performance to be good. I am using iperf3 to conduct a simple benchmark on the network performance. Do note that this is a simple test and the result may vary. My test hardware is my 2013 Macbook Air which support up to Wireless AC 867Mbps on 5Ghz.

Asus RT-AC87U wireless benchmark.

Rather unsurprisingly, I am able to achieve up to 514Mbps of actual throughput over wireless. The throughput is consistent even when I connect my other wireless devices on the network. Performance is consistent without dropouts on this latest firmware. Unfortunately, I need an even faster wireless adapter in order to benchmark this beast properly.

Media Bridge Mode

Media Bridge is one of the key features of RT-AC87U. What is Media Bridge you ask? It’s basically a wireless bridge which allow you to provide connectivity to other Ethernet only devices wirelessly. This router is clearly designed to be used with Asus EA-AC87, notice the similar naming scheme.

The wireless performance if amazing when paired with EA-AC87. I am able to achieve close to Ethernet throughput. Stay tuned to my full review of Asus EA-AC87. On the other side, the repeater mode from the AC68U is no longer available. It’s not an important feature but an extra feature is always good. 😛


This router comes with ASUSWRT and since this is a high-end model, it come with the full suite of ASUSWRT features. They are really useful and sort of transform your router into a mini NAS. I particularly like the new AiProtection feature which allow

AiProtection first debuts with this model and it aims to protect the user with various tools. It comes with a number of tools and I particularly interested in Malicious Site Blocking. I tested this feature with an antivirus test site and it works! The site is blocked and a warning is shown to warn the user. The user will be prohibited from accessing the site.  However, I must stress this is not a full replacement of Antivirus software.

Asus RT-AC87U Verdict

Asus RT-AC87U

The performance on this router is good. The wireless issues reported previously had been fixed on the latest firmware update. As this price point, there’s simply not much to say. This device fulfills my expectations without disappointment. You can expect smooth streaming files from your NAS over wireless. ASUSWRT’s extensive list of features are amazing but the average users won’t fully utilise it. If you are shopping for a new router, this is a good choice.

There’s not much competitor in this segment if you need Unifi compatibility. TP-LINK is cheap but the Unifi compatibility is hit or miss. The closest competitor for this model is Netgear’s R7500 but Netgear’s presence in Malaysia is relatively small and support is poor. I consider the Asus RT-AC3200 to be the closest competitor of this router in this case. Stay tuned to my future review of the Asus RT-AC3200.

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hi, i wanna ask is this RT AC-87U able to support Unifi 800Mbps Wifi 5Ghz?

Hi, I would like to ask is there compatibility issues between ac87u and tplink powerline 4220kit? I have to login to page to let the system recognize the powerline most of the time when I switch on the powerline. Else no internet connection on powerline. Is that normal? If yes, any solution to rectify it? Sry I am new on this.

Currently, i’m still using the stock router from tm and i have a 50mbps plan, but i feel the internet speed where not stable (sometime 15mins download time for 1gb movie; but somestime need buffering on 480p youtube) and no huge different between my old 4mbps speed. ps. i have more than 13 device connect and using the wifi at whole day include a 24/365 cctv ps. i need big wifi coverage for my 2 storey house are the above is my critical issues, will change a ASUS RT-AC87U solve my problem??? or ac68/66u will be enough or faster internet… Read more »

i got some problem with my RT-AC87U after update to latest, currently my clients are almost 20-30 devices per day usage..after sometime, the wifi got turn off and internet is down for no reason..i need to switch off n on again to recover..i took initiative by using another router as extender so half of the devices can connect to that extender..BUT the problem not is it cause by latest firmware or my router is faulty?what should i do?do i need to rollback to old firmware or need to buy new router?

Is there a way to enable CTF + FA (Lvl2) acceleration with UNIFI? Tried disabling all QOS, AI Protection, STP but still only able to achieve Lvl1 acceleration. Suspect due to PPPOE Wan connection which UNIFI requires.

I’m using the latest Asus Merlin firmware 380.58. Well, keen to test what the level 2 acceleration can do to further boost page loading though Unifi is still far from gigabyte wan connection. Also it’s a feature that comes with the higher end models, so kinda hoping that you get to utilize what u paid for.

I have this router as well, and working perfectly, except for one thing, no option to have multiple SSID and bind to specific VLAN.. Even the original UNIFI router, RG4332 has this capability..

That’s the option i was looking for. For the time being, I’m using a separate wifi router (connnected to port LAN4) to stream hyppTV over wireless.

How much is the price roughly,if u dont mind sharing

Would love your thoughts, please comment.x
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