Wi-Fi Performance

Although an office worker may use this device docked at their desk, there are certainly going to be many times where the wireless performance is important. Lenovo has included the Intel Dual Band Wireles-AC 7265 wireless adapter in the X1 Carbon. This is certainly a device that I have seen in a lot of samples, and it launched in Q3 of 2014, superseding the 7260 model. It offers 2x2:2 performance in both 2.4 and 5 GHz bands, and 802.11ac connectivity for a maximum of 866 Mbps assuming you have an 802.11ac router.

WiFi Performance - TCP

The X1 Carbon achieves about the same network performance as other devices with the Intel wireless card, coming in right around 400 Mbps. Although it cannot achieve the same performance as the Broadcom parts at the top of the list, I have found it to be a reliable card which connects without much issue. The first couple of devices I saw with this card did have a few connection issues, but they were both sorted out with driver updates. Since the X1 Carbon is newer, the driver installed worked well.

Speakers

The X1 Carbon has two downward firing speakers which are rated at 1 watt x 2. As always with devices this thin, expecting big performance out of the speakers is going to be quite a disappointment. Normally the biggest offender is the low frequency response, which is practically non-existent on notebooks.

The frequency response for the X1 Carbon was actually not too bad. The low end is, like all notebooks, pretty much not there, but the overall volume was very impressive. On several of the frequencies, the X1 Carbon would sustain over 100 dB(A) which is very loud. Playing the standard music track that I use to test speaker volume, I was able to hit around 87 dB(A) which is right up there with the loudest devices I have tested. The peak frequencies are all in the normal talking range, so this notebook would excel at voice conferences. It certainly does not lack volume.

Noise

Since this is a 15 watt CPU, it is going to require a fan in any sort of device that is this thin. However that does not mean it needs to be loud. A well designed laptop can keep the noise levels in check.

The X1 Carbon is one of those devices. When plugged in, there is a bit more fan noise with everything set from the factory since it chooses active cooling over passive, but it is quite reasonable. Unplugged, the device switches to passive to save power. On many workloads, the fans do not even need to kick in, but when they do, they start at right around 35 dB(A) measured an inch from the trackpad which is very quiet. The next step up is 38 dB(A) and the maximum noise seen on the X1 Carbon was around 41 dB. All in all, the noise output of the X1 Carbon is very reasonable. It is not fanless by any means, but when the fans do kick in, they start out very quiet and slowly move up to a level where they are never a bother.

Accessories

Since this is a ThinkPad, Lenovo needs to cater to the business crowd, and for many business users, much of their work day may be at a desk, but the portability of a laptop is needed for meetings or travel. The ThinkPad line has had docks for a long time, but the X1 Carbon is too thin to support the standard docking port.

To get around this, Lenovo offers a couple of docking solutions. Both connect to the power port of the X1 Carbon, which has a rubber cap installed on the right side. Remove the cap, and you gain full access to the docking port.

The first dock is the ThinkPad OneLink Adapter, which costs just $59.99. It is very basic though, with it just supporting power, Ethernet, and video, and it support PXE boot. It’s basic, but it gets the job done.

For those that need a more robust dock, there is also the OneLink Pro Dock, and it offers a lot more, but also costs a lot more at $179.99. There are four USB 3.0 ports, with one always powered in order to charge your phone, and there are also two USB 2.0 ports. DisplayPort and DVI are both available in order to run a couple of monitors, and it also has Gigabit Ethernet. The 90 watt AC Adapter keeps everything powered. The Pro Dock also has a headset jack.

Battery Life and Charge Time Final Words
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  • Shan Barns - Monday, October 19, 2015 - link

    Beware the so-called extended warranty
    (tl;dr -- warranted computer, gone for over 6 weeks so far, dismissive and poor service, want replacement if they can't repair)

    I own an X1 carbon (2 years old) which over the last year has started to spike in temperature. The fan software no longer works, so I've installed TPFancontrol and Speedfan (one the first time I reformatted and reinstalled Widows, the other the second time) to manually control the fans. I updated BIOS and drivers, reinstalled Windows, etc. I did the normal blowing out of the vent and so on, but the computer would go up to 90+ degrees Celsius and crash. The wireless stopped working as well--intermittently and irrespective of location/modem/time of day.

    I sent the computer in for repair, under my 3 year warranty. The first "repair" did nothing. Within 15 minutes, the computer reached 92 degrees Celsius and crashed 3 times. I sent it back for further repair. (By the way, they didn't return it with all parts of the power cord, even though they insisted I send it, and I marked all the parts on the shipping form). Obviously there is no quality control on their so-called repairs.

    I have now been without a functioning computer for over 6 weeks. Lenovo doesn't have the correct parts and cannot find them. Parts for a popular computer that is only 2 years old. Now, as a doctoral student, it's pretty hard to write a dissertation without a computer, but as a consultant, I am losing money, since I cannot consult until I have a computer. Moreover my doctoral program is only funded for so long--every month of waiting equals a month in which I will have to pay out of pocket to be a student. Being without a computer for over 6 weeks has already cost me at least $4000.

    But when I contact Lenovo to demand they deal with this issue , they reluctantly promise to add 2 months to my warranty--that's it! An acknowledgement that I've lost 2 months of computer use, and a further tacit acknowledgement that they think it will break again. This is after the problem "escalated." Mind you, they don't actually contact you after you "escalate" even though they insist they will.

    Other computer companies will replace a defective computer under warranty if they cannot fix it. This happened with my old Asus, and with my kids' HP also. What is wrong with Lenovo's warranty? I feel that if they cannot fix a 2 year old computer, then this warranty is a fraudulent service they are selling.

    And I also feel that anyone considering buying a Lenovo should be aware of how poor their customer service is. They do not call back, though they say they will. They issue "part hold final" emails insinuating that this is the last time they will await a part, but then re-start the part ordering process. They do not know who your case has gone to when it is "escalated" and are entirely confused by their own computer system when you ask about your repair status. The "escalation" people are dismissive and condescending when you do finally get a hold of a person. They do not stand by their product.
  • chris_of_sd - Friday, October 30, 2015 - link

    I bought this laptop last May after a thorough search. I've been using T410 at work for years, thus the bias. Also I was aware with the quality reduction when Lenovo took over.

    I chose this laptop for a few reasons
    1. Keyboard layout - meaning Enter button and navigation arrows are at the edge; and the trackpad is aligned with the space button.
    2. High resolution display available
    3. Style/ weight

    My experience with it has been quite bad actually.

    The WiFi adapter is the worst I've seen. Well, I haven't seen that many, except my old t410 and the usual mix of apple idevices. Eventually I was able to figure out some obscure setting that was disabling the wifi adapter to save power. Still is very slow to connect. With some old router the wifi was not able to identify the encryption method ( in contrast to all other devices ).

    As build there are highs and lows. My laptop has a loose screw on the bottom ...

    The display is quite annoying. I chose to have touch screen and the look I got is sort of the look that you get when you have a privacy screen on top. Not nice.

    The sound from this laptop is absolutely terrible. And this is not about the speakers, is about the sound that comes from the headphones. It makes is pretty much impossible to watch youtube.

    There are a few issues with cooling too.
    The laptop gets quite hot to hold on lap; let's say that this is expected. However, a second problem is that the air vent is on the right hand side, meaning if I place a mouse there or if I use my right hand for the touch screen I can feel the hot air. My old laptop had it on the left which was much better.
  • mistera1 - Friday, February 12, 2016 - link

    I got a new X1 this week and was disappointed to find the Trackpoint and Keyboard Backlight not working. I called support and upgraded everything, still no go. Lenovo wanted me to send back for repair but I told them I wanted a full refund, and they said OK to that with no fuss. I have an X200 and looking for something faster and with a better display. At this point I will probably buy a used X220.

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