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What And How We Tested

Killer Wireless-N 1103 Review: Can Qualcomm Take On Centrino?
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Here are the specifications for the aforementioned Dell/Alienware systems submitted by Qualcomm. Note that the memory and hard drive options are lower-end than Dell's original spec. However, in the context of these networking performance tests, we see no cause for concern.

Dell Alienware M17x-R3Dell Alienware M17x-R3

Model
M17x-R3
Processor
Intel Core i7-2630QM @ 2.00 GHz
Chipset
HM67 (Sandy Bridge)
Memory
8 GB Dual-Channel DDR3-1333
Integrated Graphics
Mobile Intel HD Graphics
Discreet Graphics
AMD Radeon HD 6870M
Storage
Western Digital 320 GB WD3200BEKT
WLAN 1
Intel Centrino Ultimate-N 6300 (633ANHMW)
WLAN 2
Killer Wireless-N 1103
Operating System
Microsoft Windows 7


We also grabbed a Linksys AE2500 Dual-Band Wireless-N USB adapter. We used this on the notebook equipped with Intel's Centrino Ultimate-N 6300, disabling the internal wireless adapter whenever the USB-based controller was inserted. Our supposition going in was that the USB adapter would yield poorer performance than both internally-mounted contestants since the Qualcomm and Intel devices had the benefit of larger antennas running around the notebooks’ screens. But you never know. Linksys' offering might yield some surprises.

Cisco E4200Cisco E4200

The specifics of our server system are fairly irrelevant, as the network connection is easily the main bottleneck. Suffice it to say that we used a 3.4 GHz Core i7-2600K on an Intel DP67BG motherboard (including a gigabit Ethernet port) with 8 GB of Corsair Vengeance DDR3-1600 and a 240 GB Patriot Wildfire SSD loaded with Windows 7 Professional 64-bit.

We then made a direct Ethernet connection between the server and a Cisco Linksys E4200 router. We chose this router primarily based on our own positive experiences with the E-series in prior networking stories, but also heard from Qualcomm that it has run tests with the same unit in its own facilities. Simply, our arrangement resembled this:

Test SetupTest Setup

With this configuration, we ran through three different tests in three locations within the author’s home.

Location 1: Ten feet separated the router and clients with direct line of sight between them. This was across opposite sides of the same room. Note that this room also had a set of active Logitech wireless speakers, as well as an unassociated Actiontec 802.11b/g router, just to make the environment good and noisy. There were also six to eight other WLANs detected by the clients at any given time. We’re not interested in how the adapters work under ideal conditions, only in real life.

Location 2: Twenty feet separated the router and clients, with one wall between them. We moved the notebooks into an adjacent room.

Location 3: Approximately sixty feet separated the router and clients. The router was located in one upstairs corner of the house while the notebooks with in the home’s downstairs opposite corner. This location is known for its sub-par reception and represents a sort of worst-case space within the house.

Our three benchmarks were:

File transfer tests: We used two file sets here. The first was simply a single 2 GB ZIP archive. The second was a folder containing several hundred data files and documents totaling 200 MB. The purpose of the first was to ascertain a sustained throughput in order to even out any fleeting environmental RF fluctuations, while the second aimed to give a better look at the overhead impact from having to pass many files rather than only one.

PassMark PerformanceTest 7: While many people have yet to try out this thorough benchmarking suite, it’s quickly becoming one of our favorite testing Swiss Army knives. Specifically, we used the suite’s Advanced Network Test.

PassMark PerformanceTest 7PassMark PerformanceTest 7

We ran each PerformanceTest run for 180 seconds, examining both TCP and UDP throughput. Moreover, we tested each case with both 4 KB and 16 KB block sizes to better assess the impact of varying data sizes on network performance.

Gaming Network Efficiency (GaNE): This benchmark was both designed and supplied by Qualcomm/Bigfoot Networks as a quick but effective way to test ping times and jitter. We were especially drawn to its easy graphing capabilities. As usual with vendor-supplied software, we took a hard look at this tool, wanting to make sure it wasn’t playing favorites. After considerable hours of testing, we’re confident that GaNE is above board, in part because our early tests showed the Qualcomm adapter underperforming, suffering massive latencies. As happens all too often when we communicate with a vendor during the testing process, Qualcomm followed up with a driver update that greatly reduced these problems...and forced us to start our testing from scratch.

Killer App PrioritizationKiller App Prioritization

Speaking of drivers, know that we set the aforementioned Killer Network Manager app to give GaNE the “highest” priority. We debated about this, feeling that this might be giving an unfair advantage. Finally, we decided that the Killer software is just as much a part of the product platform as the hardware, and there’s nothing keeping its competitors from offering their own software optimizations. So, we let it run.

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Top Comments
  • 19 Hide
    phamhlam , April 5, 2012 5:52 AM
    I wish they would build better PCI-Express WiFi Adapter. Some of us can't have a cable going through our house or have our computer sit next to the router.
Other Comments
  • 9 Hide
    Anonymous , April 5, 2012 5:44 AM
    Still not buying it.
  • 19 Hide
    phamhlam , April 5, 2012 5:52 AM
    I wish they would build better PCI-Express WiFi Adapter. Some of us can't have a cable going through our house or have our computer sit next to the router.
  • 0 Hide
    KelvinTy , April 5, 2012 9:44 AM
    I think if you have the lowest latency at your end and leave everything on the server and internet end. Then it would be a lot better, especially there is input lag from everything, monitor, mouse, keyboard, wireless card, router and internet...
  • 0 Hide
    reghir , April 5, 2012 11:58 AM
    There are 2 versions of the E4200 did you use version 1 or 2 as version 2 increases to 450Mbps on both bands and full spatial on its 3X3 streams?
  • 2 Hide
    MKBL , April 5, 2012 1:21 PM
    I hope TH will review on powerline Ethernet adapter against typical RJ45 and wifi. For the same reason as phalmhlam, my desktop is connected to router by a long cable running across floor, which bothers me and my family sometimes. I've been considering powerline ethernet, but I can't make decision between that and wireless-N, because I have no idea which one has better performance/price.
  • -5 Hide
    CaedenV , April 5, 2012 1:34 PM
    Great article! I learned quite a few things from it.

    I still think I will be waiting for 802.11ac before upgrading from G though.
  • 4 Hide
    jaylimo84 , April 5, 2012 1:34 PM
    M. Van Winkle,
    Thanks for this nice article.

    I own an Alienware M17xR3, with the Killer 1103.
    Upon installation, the driver was causing me issues (nothing big tho), and I decided to follow a forum recommendation and install the Atheros Osprey driver instead of Killer's.
    It seems the two card are identical apart from the name on it. (Maybe I am misleaded)

    It could be interesting to see if the Killer 1103 gets any improvement using the Killer driver vs. the vanilla Atheros drivers, and see if "years of working with the windows tcp stack" pays off. Or if your performance improvement is due to a good, but still normal card.
  • 1 Hide
    CaedenV , April 5, 2012 1:37 PM
    MKBLI hope TH will review on powerline Ethernet adapter against typical RJ45 and wifi. For the same reason as phalmhlam, my desktop is connected to router by a long cable running across floor, which bothers me and my family sometimes. I've been considering powerline ethernet, but I can't make decision between that and wireless-N, because I have no idea which one has better performance/price.

    Indeed, it is an issue. I ended up wiring the house through the HVAC ducts, which is a terrible idea (breaks all sorts of building codes), but better than drilling holes all throughout the house only to move to wireless within the next 5-10 years.
  • 1 Hide
    Anonymous , April 5, 2012 2:20 PM
    The Killer 1103 *IS* available for purchase. Check Amazon... $55 shipped.
  • 0 Hide
    XmortisX , April 5, 2012 2:25 PM
    I would like to try this out. If they can make a good pci-e/pci version of this card then definitely would try to push it with my clients. Even though we may get more labor hours for running wires the convenience and idea of avoiding HVAC ducts building codes makes this appealing.
  • 1 Hide
    maxinexus , April 5, 2012 2:29 PM
    Cool, but if I can't buy it for my laptop what is the point?
  • 1 Hide
    scook9 , April 5, 2012 3:01 PM
    For those who want better wireless for their desktop, get one of these and install the laptop card in it

    http://www.amazon.com/Express-Wireless-Adapter-Antennas-miniPCI-E/dp/B005JTEREW
  • -1 Hide
    jaquith , April 5, 2012 3:01 PM
    There are so many variables what "10', 20' and 60'" means that it is totally impossible to use any wireless benching short of a line-of-sight and unobstructed. Show me a house, short of a mansion, with a 60' line of sight. Further, I've lived in an old house where the frigging walls are solid plaster with wire mesh, and getting a 'usable' signal through a couple of walls was a miracle.

    Most folks are running their wireless through several partitioned walls and 20'~30'. The key variable is what's in the walls and how much interference you're running across.

    I our current and new house we have a centralized switch and CAT-6 distribution, PowerLine, and (2) Access Points 802.11a/b/g/n. That said, there's NO FRIGGING way I'm going to transfer a 2GB file through the air even though I 'can' -- Flash Drive or NIC. In our house every work area, TV, and bedroom has wired CAT-6 so the majority of WiFi is for our Phones and tablets (e.g. iPhone & iPad).

    Further, IF you're using any form of wireless for a Desktop you need to run to the store and either use CAT-5e/6 as your first choice and/or $60~$110 and get a pair of PowerLine. Some of the new Router/Switches/WiFi adapters are including PowerLine built-in.

    Lastly, very few Notebooks have the option to accept a half-mini PCIe Card.
  • 1 Hide
    dvanburen , April 5, 2012 3:10 PM
    Something seems wrong. During the LoS transfer test you get only 9MB/s. I can get 16.6MB/s with a 2.2GB file from my M6600 w/Intel 6300 to a Linksys E3000 w/DD-WRT over 2.4 GHz. Granted, I am about 7ft LoS vs. 10, but that shouldn't drop you to FastEthernet speeds. Are you absolutely sure you had a GB uplink from the router to the PC? If not then most of these results are skewed.
  • 2 Hide
    dvanburen , April 5, 2012 3:55 PM
    Two more results, this time I timed them and moved the laptop to about 9ft. LoS.

    3.63GB EXE - 4:06s | 3905548288 Bytes | 15.14MB/s
    2.14GB ZIP - 2:23.8s | 2306882779 Bytes | 15.30 MB/s

    These are just Drag and Drop via Explorer.
  • 6 Hide
    scook9 , April 5, 2012 4:21 PM
    jaquithThere are so many variables what "10', 20' and 60'" means that it is totally impossible to use any wireless benching short of a line-of-sight and unobstructed. Show me a house, short of a mansion, with a 60' line of sight. Further, I've lived in an old house where the frigging walls are solid plaster with wire mesh, and getting a 'usable' signal through a couple of walls was a miracle.Most folks are running their wireless through several partitioned walls and 20'~30'. The key variable is what's in the walls and how much interference you're running across. I our current and new house we have a centralized switch and CAT-6 distribution, PowerLine, and (2) Access Points 802.11a/b/g/n. That said, there's NO FRIGGING way I'm going to transfer a 2GB file through the air even though I 'can' -- Flash Drive or NIC. In our house every work area, TV, and bedroom has wired CAT-6 so the majority of WiFi is for our Phones and tablets (e.g. iPhone & iPad). Further, IF you're using any form of wireless for a Desktop you need to run to the store and either use CAT-5e/6 as your first choice and/or $60~$110 and get a pair of PowerLine. Some of the new Router/Switches/WiFi adapters are including PowerLine built-in. Lastly, very few Notebooks have the option to accept a half-mini PCIe Card.

    While I appreciate and sympathize with the remark about plaster walls, the bolded statement is just flat out wrong. Half height cards are the standard now. Intel does not even offer the 6200 or 6300 cards in full height
  • 0 Hide
    pacioli , April 5, 2012 5:01 PM
    Lol. I have CAT5e running from one corner of my house to the other. At each corner I have a Dual-Band router/bridge pumping out Wi-fi with the same ID/Pass combo. No matter where I am in my place I am being bathed in wireless waves of internets. I also have a Cat5e running to the switch in the entertainment center to hook up all my web enabled goodies.
  • 3 Hide
    blazorthon , April 5, 2012 5:20 PM
    MKBLI hope TH will review on powerline Ethernet adapter against typical RJ45 and wifi. For the same reason as phalmhlam, my desktop is connected to router by a long cable running across floor, which bothers me and my family sometimes. I've been considering powerline ethernet, but I can't make decision between that and wireless-N, because I have no idea which one has better performance/price.


    If you want high speed, get 500Mb power line. It will beat out the wireless easily, unless you have some serious problem with your electrical wiring.

    dvanburenSomething seems wrong. During the LoS transfer test you get only 9MB/s. I can get 16.6MB/s with a 2.2GB file from my M6600 w/Intel 6300 to a Linksys E3000 w/DD-WRT over 2.4 GHz. Granted, I am about 7ft LoS vs. 10, but that shouldn't drop you to FastEthernet speeds. Are you absolutely sure you had a GB uplink from the router to the PC? If not then most of these results are skewed.


    DD-WRT is the answer there. It slaughters the stock firmware in all routers. Tomato does too.

    jaquithThere are so many variables what "10', 20' and 60'" means that it is totally impossible to use any wireless benching short of a line-of-sight and unobstructed. Show me a house, short of a mansion, with a 60' line of sight. Further, I've lived in an old house where the frigging walls are solid plaster with wire mesh, and getting a 'usable' signal through a couple of walls was a miracle.Most folks are running their wireless through several partitioned walls and 20'~30'. The key variable is what's in the walls and how much interference you're running across. I our current and new house we have a centralized switch and CAT-6 distribution, PowerLine, and (2) Access Points 802.11a/b/g/n. That said, there's NO FRIGGING way I'm going to transfer a 2GB file through the air even though I 'can' -- Flash Drive or NIC. In our house every work area, TV, and bedroom has wired CAT-6 so the majority of WiFi is for our Phones and tablets (e.g. iPhone & iPad). Further, IF you're using any form of wireless for a Desktop you need to run to the store and either use CAT-5e/6 as your first choice and/or $60~$110 and get a pair of PowerLine. Some of the new Router/Switches/WiFi adapters are including PowerLine built-in. Lastly, very few Notebooks have the option to accept a half-mini PCIe Card.


    Even my four year old Gateway M-1624 has TWO half-mini PCIe card slots for wireless cards and such. Most notebook computers nowadays have at least one such slot. In fact, almost all modern notebook computers have at least one such slot. Many have more than one.
  • 0 Hide
    dvanburen , April 5, 2012 6:20 PM
    blazorthon.DD-WRT is the answer there. It slaughters the stock firmware in all routers. Tomato does too.


    I can't help but think of the connection to the PC. 9MB/s just screams FastEthernet. I could understand DD-WRT contributing to a 10% or even 20% increase in perfomance, but we are talking a 60% to 70% difference in performance.
  • -3 Hide
    jaquith , April 5, 2012 6:45 PM
    Quote:
    While I appreciate and sympathize with the remark about plaster walls, the bolded statement is just flat out wrong. Half height cards are the standard now. Intel does not even offer the 6200 or 6300 cards in full height

    Quote:
    my four year old Gateway M-1624 has TWO half-mini PCIe card slots for wireless cards and such. Most notebook computers nowadays have at least one such slot. In fact, almost all modern notebook computers have at least one such slot. Many have more than one.

    I have both X58's and an X79 with 6-core CPUs and an HP EliteBook Mobile Workstation, but my no means is any of that 'typical' nor does it by any stretch of the imagination represent the Majority. Operative word Majority.

    Most Notebook's either have their WiFi (or other forms of wireless) - Integrated or Non-User replaceable or accessible.

    Sure, 'some' Notebooks have ALL sorts of options and user configurable add-ons. Again, the majority simply do not.
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