A Quick Test of Real-World Wireless Performance

For testing, I grabbed a bunch of the hardware I had around and gathered one set of numbers: average throughput copying a single large file from my desktop with a wired Gigabit Ethernet connection to a laptop. I’m using Western Digital’s MyNet AC1300 router as the wireless router. The AC1300 is running firmware v1.03.09, and it's a product that has now been around for eight or so months. It supports up to 450Mbps (3x3:3 MIMO) on 802.11n connections and up to 1300Mbps on 5GHz 11ac connections. (Unfortunately, I didn't ever seem to connect with more than two 11ac streams with my current hardware, including Western Digital's AC Bridge.) We’re still not at Gigabit Ethernet speeds in most cases, but with nearly triple the throughput of the fastest 11n wireless it’s definitely getting closer.

For the adapters, I tested both single- and dual-band offerings. On the 802.11ac side, I used an 11ac bridge (the Western Digital My Net AC Bridge), a USB 11ac adapter (Linksys AE6000), and a Clevo P157SM notebook from Mythlogic (Pollux 1613) equipped with Intel’s latest Wireless-AC 7260 adapter. I should take a minute to note that one of the great things about going with a boutique laptop vendor like Mythlogic is the ability to customize not just the storage and CPU, but the WiFi adapter as well. Then I tossed in three other laptops, two of which I’m working on reviewing along with a previously reviewed laptop. The ASUS UX51VZ uses Intel’s common Wireless-N 6235 adapter (dual-band 2x2:2 MIMO with Bluetooth 4.0), Acer’s Aspire R7-571-6468 “oversized hybrid” uses a Broadcom BCM43XNM chipset (based on the hardware ID, it appears to be the BCM943228HM4L, or at least something similar—it’s also dual-band 2x2:2 MIMO with Bluetooth 4.0 support), and the MSI GE40 is the lone 2.4GHz single-band 150Mbps offering sporting a Realtek RTL8723AE chipset. All of the adapters were tested in both 2.4GHz and 5GHz modes (where applicable).

And with that said, here are the results from two test locations. Location one is with the target device in the same room as the router (my office), about five feet away. The second location is downstairs at the home theater area (my “second office”), about 20 feet away with one wall and one floor in between. The results show minimum, median, and maximum throughput of five test runs, with the caveat that I made sure there were no outliers—sometimes Windows or WiFi will have a really slow run or two.

Test Location One: Office (Five Feet)

Test Location Two: Home Theater (20 Feet)

Not surprisingly, the AC Bridge posts the best performance of all the solutions. With three spatial streams, I was hoping to get a lot closer to 800-900Mbps of throughput, but most of the time it appears to have run at closer to two streams. Performance isn't all that different from the Mythlogic laptop with Intel’s 7260 AC adapter at the short range location, but it’s over twice the speed at the second test location. What’s even worse is how poorly many of the solutions end up performing at the second test location.

I’m not surprised to see the Mythlogic notebook post excellent throughput over 5GHz 802.11ac, but it ends up being the third fastest solution even when falling back to 2.4GHz 802.11n at the second location! I could live with throughput of 50+ Mbps throughout my home, but pulling over 300Mbps from the downstairs HTPC to my other networked PCs over wireless is simply awesome…as long as the wireless signal doesn’t get dropped.

I haven’t actually had that happen with the Western Digital AC1300 (yet), but over the past seven or so years of testing notebooks and laptops for AnandTech, dropped wireless connections are a far too common occurrence in my experience. I’ve been through about ten wireless routers during that time, and even the best were never quite as stable/dependable as wired Ethernet. Some might go a couple weeks or even a month without needing a reboot (e.g. the Amped Wireless), while others might have WiFi "crash" every couple of days.

Throw in the lackluster WiFi adapters you find in most laptops (represented here by the Realtek RTL8723AE) and you can hopefully understand why having Gigabit Ethernet in notebooks still matters to a lot of people. I've got a second set of graphs that shows the same data as above, only in seconds required rather than Mbps:

Test Location One: Office (Five Feet)

Test Location Two: Home Theater (20 Feet)

Our current mobile test suite at present weighs in at a hefty 121GiB; over Gigabit Ethernet it takes about 20 minutes to copy everything over. Now imagine a laptop like the MSI GE40, except without the Ethernet port, and I’d be looking at nearly six hours just to copy the testing files over WiFi. (Thank goodness for USB 3.0 external SSD adapters!) But perhaps you never bother with copying large amounts of files over your local network, so slower WiFi speeds aren’t such an issue, right? My Comcast Internet now tops out with downstream speeds of up to 40Mbps and upstream rates of 12Mbps; when I’m not in my office, that means some of the adapters/laptops out there are likely going to bottleneck my Internet speed. It’s not the end of the world when you can only get 25Mbps, but there are certainly times when you’ll notice the difference—particularly if you have multiple PCs accessing the net concurrently.

One final item to discuss is that the adapters aren’t the whole story. You can see in the charts above that just because something supports two spatial streams on WiFi doesn’t inherently mean better performance than single stream adapters. The tiny USB WiFi adapter only manages average performance on a 5GHz connection from a couple rooms away from the router, and on a 2.4GHz connection it ends up being the slowest option outside of the Acer R7 2.4GHz result. Better antennas matter, and in the case of the Acer R7, the tuning of the antenna is likely another major factor.

The R7 actually fails to detect my 2.4GHz network from 50 feet away, yet it still manages to connect to the 5GHz network, and the R7 isn’t alone in such funky behavior. I’ve had laptops where the WiFi adapter powers off when the system has been running more than about 48 hours straight (even if the WiFi wasn’t doing anything), and the only way to get it back is to turn the adapter off and then turn it back on. And if laptops can sometimes have flaky WiFi implementations, many of the tablets out there are worse—range on two of my Android tablets is probably 50 feet at best before I have problems, so even my driveway is “too far” to get WiFi coverage.

Recap: 802.11ac Wireless Networking Closing Thoughts (for Now)
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  • JarredWalton - Tuesday, July 9, 2013 - link

    How large is your house? It's a question of area, as well as quality of implementation. Some 5GHz devices will manage to go farther than others, but if your home is really large you'd need to go with repeaters or access points. Then again, if your home is that large, you probably aren't running into as many problems with neighborhood 2.4GHz networks interfering.
  • chripuck - Tuesday, July 9, 2013 - link

    Agreed with mia, my house is 4300 square feet and I need two 2.4 GHz routers to cover the darn thing. Of course my biggest problem is that at the center of my house is a fireplace that has some sort of heat shielding inside it and it creates a blackhole for wifi signals.
  • jaydee - Tuesday, July 9, 2013 - link

    Comparison of the following options for the Dell Latitude line?

    Dell Wireless™ 1504 802.11g/n Single Band Wi-Fi Half Mini Card
    Dell Wireless™ 1540 802.11a/n Dual Band, High Speed Wi-Fi Half Mini Card
    Intel® Centrino® Advanced-N 6205 802.11n 2x2 Half Mini Card
    Intel® Centrino® Ultimate-N 6300 802.11n 3x3 Half Mini Card
  • lmcd - Tuesday, July 9, 2013 - link

    Clearly the last one is going to perform the best as the first one isn't even dual-band, the next two are dual-band and the last is tri-band. Not even accounting for the fact that Dell likely rebrands the first two options from Realtek, which was covered here. If the difference between the third and forth option is less than $30 I'd dive on that 6300 without blinking.
  • jaydee - Tuesday, July 9, 2013 - link

    Its not so much a matter of "I wonder which is going to perform better?", its more of a matter of "how much performance are you buying with the better wifi card?" There's only a $28 diff between the 1st option and the 4th option, obviously on paper it's well worth it, but I'm hoping for a more tangible comparison.
  • MikeDiction - Thursday, July 11, 2013 - link

    I went with the Intel 6300 when I configured my Dad's laptop for him. I'm getting about 130 Mbps in 20 feet away from an ASUS NT-56U.
  • Zap - Tuesday, July 9, 2013 - link

    "over the past seven or so years of testing notebooks and laptops for AnandTech, dropped wireless connections are a far too common occurrence in my experience"

    Tell it like it is, brother!

    Seriously though, even cell phones still get dropped calls in this day and age.
  • lmcd - Tuesday, July 9, 2013 - link

    Last time I dropped a call was in a completely dead forest corridor, where no signal was claimed. My signal made it farther than advertised, too.

    Now, my data connection on the other hand...
  • kwrzesien - Tuesday, July 9, 2013 - link

    Excellent review, thank you for the solid information as every bit helps. I'm looking to replace my Netgear WNDR3700 v0 which is now performing Wireless AP duty in the middle of an enormous house. The wired network (FVS318G ProSafe VPN Router and two GS105 switches) is rock solid, with eight drops of Gigabit wiring built in to the house during construction. But that stupid wireless box crashes or partially locks up every few weeks. Sometimes wireless will work for some existing connections but won't accept devices (iPhones, iPad) back onto the network when they have been away.

    I just read all the Newegg and Amazon reviews, especially anything less than perfect, on several of the new AC routers. All of them seem to be 10-20% defective, and the firmware seems to be 10-20% buggy on advanced features several of which I need. In fact it seems there hasn't ever been a reliable, rock solid, long lasting (5 yr) router in the last three years. Please, please correct me if I'm wrong! So I am seriously considering the Apple Airport Extreme or Time Capsule, it seems like a solid product, well engineered, and has great reviews. Give me that Apple halo!
  • kwrzesien - Tuesday, July 9, 2013 - link

    My wife says I have logic problems - maybe she it right.

    I concur with the other comments that 5 GHz doesn't seem to be all that - most of my devices prefer 2.4 GHz as the connection is more stable when moving around the house. Of course most of the old devices are 2.4 GHz only anyway, but even our Lenovo T410 laptops and iPhone 5's seem to work as well or better on 2.4.

    Oh, and please don't label the charts as 5G and 2.4G, that's just not right and will confuse people with 2.5G, 3G and 4G cellular standards. /rant

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