Thinkpad x1 carbon 5th (2017) Owner's Lounge

yes, left palm rest. When I shakeit, I could feel something hitting on the top surface. A cable or screw. Other than that, I dont see any issue at all.

My fan is acting a bit odd, it kicks in a little too much, maybe this will be better once i upgrade bios and firmware. But what bothers me, is the sudden swish of the fan. I am not sure if its normal across all i7s. Does that happen to you?

Also, you ordered another one? as in, one more x1c5? Why?

 

I spoke with customer service and they said they would issue a full refund for the defective one. And i'm currently using this one for work, and don't want to risk getting stuck with another defect so I went ahead and ordered a new one with plans to return the defective one.

I have the i5 7300U, and I run linux exclusively; I get the sudden 'swoosh' of the fan but it's only for a brief moment when it first spins up. I think that's by design. My fan is actually off 99% of the time under linux. Manjaro i3 is a much lighter system, under windows it would come on a bit more frequently, but was still off most of the time. I did read a lot about the fan being on frequently with the i7, so I went with the i5 in favor of battery life.

 

@heisenberg420

yeah, I really like the lenovo support so far. I can see a wide range of issues faced by different folks, luckily I don't have most of it. But most of the cases, they are fixed. I am hoping this rattling is no big deal and its some loose screw and the technician will be able to fix it tomorrow.

I need two pieces of information,

1. What are processes were you running? Heavy ones? My fan runs at max(I could hear it pretty clearly when I am compiling - Golang or SBT/scala). Along with 5-8 chrome tabs open.

2. What is the average heat from different thermal zones? You can do a `cat /sys/class/thermal/thermal_zone0/temp` and change the nos from 1 to 3. When I compile it peaks to 75 on zone 0 and 2. That is when its 100% CPU, but immediately goes back ones the heavy process is done. (compiling)
It was never slow. I never experienced lag till now.

My fan is constantly running (medium) with 13 tabs, one IntelliJ session(JVM), one postman app. Memory util about 7gb.

 

When you say defective piece, it was only in terms of build quality right? Like rattles on trackpad etc.

 

I am not able to tell if there is any issue with my processor or not. Since I would need to figure out if something is wrong asap. Thats the average load(13 tabs, one intelliJ IDE session), my laptop is slightly warm. Not too hot, but slightly warm. No lag, no other rattling nose from anywhere(except for that one rattling noise frm the inside), no dead pixels. Fan constantly runs at low - medium and high depending on the load.

Your thoughts? is there some kind of benchmark I can follow?

 

Yes. My left mouse button feels quite loose. The middle button is also a bit loose, but the right one feels solid. Haven't been able to find anyone else with this issue.

I run pretty light software, and haven't done much CPU intensive work yet. I did build my favorite IDE from source which made got me up to about 70 C (cpu temp), and the fans running at max speed. Other than that I tend to only have 5 or less tabs open, and work mostly in CLI.

From what you describe, that sounds pretty normal. It's a light ultrabook; it's going to get warm. If you've ever owned something thinner, (I had a yoga 2 pro that got scorching hot, hot enough to burn your leg) the X1 carbon actually runs pretty cool compared to most ultrabooks.

I haven't monitored my thermal zones yet, but the next time I do something a bit more resource heavy I'll post an update.

 

Alrighty. I thought these ultrabooks can be used for heavy development. I mean, couple of intelliJ sessions and about 10 tabs. It gets fairly warm, but doesnt lag or anything.
The lenovo guys are coming over to fix the rattle and faulty fan.(not even sure if its faulty)

Will update here. Also, check the thermal zones and let me know.

 

I built android studio using yaourt today and made a little bash script to watch the thermal zones, sampling in 3 second intervals. For whatever reason it won't let me attach it as a text file so I put it in a pastebin:
https://pastebin.com/mxYpGWX9

Took about 5 min and the fan was on the entire time while building, and I couldn't detect any throttling; it maintained 3.5 GHz (which is the max turbo for the i5 7300U)

Let me know if you want the bash script to compare your own temps.

 

thats interesting. Mine is a bit more. Around 48 - 51 avg. But I am constantly running 7 tabs, 1 intellij, and when I build(golang) project, it goes upto 75, then comes back once its built. It looks pretty stable. Now, the fan doesnt make the swish noise now as well, but its constantly running on low to medium.

You just ran one build right? No chrome tabs? no other processes running?

Yes, share the script, I'd run it and update you.

Also check out the mac book pro heat chart for comparisons. https://www.intelmactemp.com/list

 

Had maybe 4-5 tabs open (firefox), and conky. I suppose it makes sense for the i7 to run a bit hotter, no? I'm idling around 34 C. Maybe high 30s low 40s during light usage. What's surprising is my temps are actually able to break 50 for short periods without the fan coming on at all. Never seen that in any of my previous laptops. Speaking in terms of CPU temp.

Here's the script

Code:

#!/bin/bash
# thermals
# usage: bash thermals >> log.txt

update() {
    ctmp=$(($(cat /sys/devices/platform/coretemp.0/hwmon/hwmon2/temp1_input)/1000))
    load=$(grep 'cpu ' /proc/stat | awk '{usage=($2+$4)*100/($2+$4+$5)} END {print usage "%"}')
    fan=$(cat /sys/devices/platform/thinkpad_hwmon/fan1_input)
    tz0=$(($(cat /sys/class/thermal/thermal_zone0/temp)/1000))
    tz1=$(($(cat /sys/class/thermal/thermal_zone1/temp)/1000))
    tz2=$(($(cat /sys/class/thermal/thermal_zone2/temp)/1000))
    tz3=$(($(cat /sys/class/thermal/thermal_zone3/temp)/1000))
    time=$(date +%I:%M:%S)

    echo "$time | CPU temp=$ctmp C | Load=$load | Fan=$fan rpm | Zone 0=$tz0 C | Zone 1=$tz1 C | Zone 2=$tz2 C | Zone 3=$tz3 C"
}

while true; do update; sleep 3; done

 

https://pastebin.com/Lch879eE

Did you change the script for load?

I had about 7 tabs open, had one intellij session, and built a fairly big go project. You can see it spiking during the build and coming down when its done.
Its fairly normal I believe, what do you think? My avg is 47-51 when have like 7 tabs with one JVM(intellij), if i close intellij and just tabs, its between 30s and 40s.
IntelliJ eats up quite a bit. Similar to android studio and eclipse.

 

Yeah actually that load stat was completely wrong. That was the average load since boot.

Here's one that should give cpu load in real time, using mpstat. It requires the package sysstat

Code:

#!/bin/bash
# thermals
# DEPENDS: sysstat
# usage: bash thermals >> log.txt

update() {
    ctmp=$(($(cat /sys/devices/platform/coretemp.0/hwmon/hwmon2/temp1_input)/1000))
    load=$(mpstat | grep all | awk '{print $4}')
    fan=$(cat /sys/devices/platform/thinkpad_hwmon/fan1_input)
    tz0=$(($(cat /sys/class/thermal/thermal_zone0/temp)/1000))
    tz1=$(($(cat /sys/class/thermal/thermal_zone1/temp)/1000))
    tz2=$(($(cat /sys/class/thermal/thermal_zone2/temp)/1000))
    tz3=$(($(cat /sys/class/thermal/thermal_zone3/temp)/1000))
    time=$(date +%I:%M:%S)

    echo "$time | CPU temp=$ctmp C | Load=$load % | Fan=$fan rpm | Zone 0=$tz0 C | Zone 1=$tz1 C | Zone 2=$tz2 C | Zone 3=$tz3 C"
}

while true; do update; sleep 3; done

yeah I mean obviously the i7 is going to run hotter. I'd still expects the fan to be off during idle though.

 

Ok, looks like its all normal.
The technician is coming to look into the rattle noise tomorrow.
There is a slight issue now, the thin rubber coating is peeling off a bit on one of the edges. Its no big deal, and hardly noticeable.

Hope it doesn't get worse in few months and look ugly.lol

 

Update: the engineer did come today, he changed the fan and fixed the rattling noise. I am astonished by lenovos brilliant support. Really.
Also, the rattling noise is the CMOS battery hitting the actual battery. Its really no big deal. He anyway glued it. You can unscrew it, remove the battery, then you ll see the CMOS battery on the left. Just tape it.


https://www.ebay.co.uk/i/1123883059...=1007210&device=c&campaignid=707291931&crdt=0
@heisenberg420

 

Awesome thanks for the update. Any tips on removing the battery? I was unable to figure out how to remove it after unscrewing the 4 screws; it seems like it's attached to the board up top, and hinged under tabs at the bottom.

I could see those wires running under the battery right where the noise was coming from, I was so close but gave up being unable to remove the battery

 

Hey guys anyone have an idea on the timing of the QHD screen variants? Thanks

 

You need to remove the screws and pull it up with a bit of force. Just google to get a video?

 

Hey,

I am pretty aware that my next Notebook will be an X1C5 w/ i7-7500U.

Does anyone have had issues of COIL WHINE with this model? I read the whole thread and did not notice any complaint, on other sites, ppl complaining about that.

I am asking especially the ppl who replaced their SSD b/c coil whining will appear after that maybe.

Second Question: How can one recognize the manufacturing date before buying? Special S/N or sth?

Third Question: Is the "Fan Issue" definitely fixed with newest BIOS - Means: Is the fan OFF when doing ordinary Word/Excel/Mail/Surfing Stuff or does the fan turn on AFTER A WHILE (nearly) no matter what one does?

Thanks in advance for the answers.

 

Does anyone know what is the status of Carbon 5th gen regarding the Skylake/Kaby Lake processors HT issue?
https://news.ycombinator.com/item?id=14630183

 

I haven't seen it and I have HT on and running Hyper-V on my system.

 

My Thinkapd X1 Carbon 2017 just arrived yesterday!! I absolutely love it. Here's why. I'd like to share some of my observations since I found it so hard to come across user reviews or many extensive reviews of the Thinkpad X1 Carbon 5th Gen when I was doing my research. I can also respond to some of the feedback provided in the reviews I came across online.

The look, feel and weight of this laptop will blow you away as soon as you take it out of its packaging. I haven''t come across any build quality issues, no creaky spots like some reviews mentioned. Both me and boyfriend felt that the X1 Carbon felt more premium than his macbook air (which is 4 years old to be honest), but it will also stand the test against the new macbook, several of which I have handled in the Apple store when I was researching which laptop to get.

All the touchpad issues I had read about in reviews (freezing intermittently and requiring a restart, then freezing again) is an absolute non-issue with mine. Guess they fixed it after the first batch of problems. Also, the glass touchpad makes scrolling feel exacly like gliding on a glass surface, it's comparable to the macbook air's touchpad in terms of scrolling through webpages (maybe the zoom feature could be improved).

The keyboard....I was really nervous coming from my Thinkpad X220 that i would hate the chiclet keyboard. But to me chiclet = Apple's shallow key travel (i just can't stand typing on my boyfriend's macbook air). But I am pleasantly surprised to say that the feedback/pressue of the keys has just the right amount of snap and spring to them. The travel is probably a couple of millimetre less than the X220 old style keyboard, and yes... I am saying this too, I actually think the new keyboard has a better feel to it (i always nod my head in disbelief when reviewers said this but I have to give them this one).

Fan noise. Haven't noticed at all when it was on battery yesterday or today even when installing programmes or working with large spreadsheets. When charging, I noticed the fan coming on and off, and the fan noise is audible in the middle of the night if your sitting in front of it (not to the person next to you). I didn't notice any fan noise at work when it was on charging yesterday maybe because the office was noisy, or it could be that the fan never came on, can't be sure.

Battery life: is amazing for a 14 inch laptop. My X220 on a 6 cell battery died after 3 and a half hours even on a new battery. I did an hour on battery last night, and still had 12.5 hours left. I left the charger at home today and worked on the new laptop from the office, it lasted me from 8:30 am to 9 pm (that's a bit more than 12 hours!) and the battery guage still had 3 hours left to go!!! I was mostly on Word writing a report, on Excel working with large spreadsheets, surfing web pages, and downloading a lot of software like antivirus, chrome and some other software. Brightness was at 50%

Brightness: Ok coming from an X220 which was notorious for its dim screens, i have to say my X1 Carbon did a fantastic job allowing me to work on 50% brightness throughout the day in an office that is solely lit by natural light in the daytime. I could never achieve this on the X220 and probably why the battery on the X220 gave out earlier than it should have.

Backlit keyboard - I'm old school, I prefer the thinklight. You could read from a book/or look at your notes on paper while also typing on the X220 which had a thinklight. The backlit keyboard simply illuminates the keys and doesn't act as a night lamp (so now I may need to invest in one). I do agree with the reviews that you can see a significant amount of backlight bleed from underneath the keys of the X1 Carbon if you are looking at it from an angle. This could hurt the eyes when you are looking up to the keyboard at an angle (like lying in bed rather than sitting at a desk looking down onto the keyboard). But I'm not staring directly at the backlit keys for any length of time as my attention is on the screen, so your eyes focus elsewhere. However, I don't necessarily agree with reviews that say the lowest setting on the backlight is too dim. When you try it at night, the lowest setting is more gentle on my eyes than the second higher setting. You can see the keys properly, and you don't need to be a touch typist either to somehow get by on the lowest setting.

SSD - The wonders of SSD! I have a PCIe-NVMe. I have never used an SSD before. My trusty X220 had a spinning 5400 rpm HDD. Yes, it was slow. I had to wait for around for the computer to wake from sleep. As I started working on larger spreadsheets the waiting times grew. The SSD doesn't choke, not once today. I was just happy that I didn't have to spend an extra hour at the office (on top of the 12 hours I did already) waiting around for the spreadsheet to compute!

720p webcam - The quality of the webcam is a 100 times better than my x220 so I am pleased, although it's not as good as the macbook air. But the camera still manages to make you look presentable, and not a grainy version of yourself.

As for my configuration, I have the base model which is a Core i5 7200u Processor, an FHD sceen (1920x1080) which is just gorgeous and the colours POP, 256 PCIe NVMe SSD, 8 GB RAM and the fingerprint reader along with a 720p webcam. There is no WWAN or IR facial recognition on the base model. It is completely adeqaute for my purposes ... office work, email, Excel spreadsheets, Word docs and a lot tabs open in Firefox. I generally try to use Chrome when I am plugged in as it's a battery hogger. Although I did read in a review, that Chrome had little to no effect on the battery life of the X1 Carbon 5th Gen but I can't vouch for it's accuracy as I haven't tested it on this laptop.

I would like to mention on a parting note that unlike some of the reviews confusingly lead you to believe .. the base model X1C5 does indeed come with ethernet conection. But this is a small proprietary ethernet connector developed by Lenovo to fit in to the body of the slimmed down X1 Carbon 5th Gen. They throw in the dongle for the proprietary to standard ethernet connector for free in your order which is a blessing! The base model comes with a 720p webcam but does not have the IR facial recognition (that is signing in with Windows Hello facial recognition). However, I think I prefer the fingerprint reader on the base model which is very fast and speedy. Also, when placing the order I orderd an HDMI to VGA connector for £12!! I go to a lot of conferences to present and 80% are stuck with VGA, and 10% have HDMI. But I have rarely seen anything else more sophisticated like thunderbolt connectivity for presentations even in large IT company conference rooms. What I'm really most grateful to Lenovo for is that they make up for taking away the necessary ports by keeping the purchase price of these dongles really cheap, or even free. Something I have not been able to forgive Apple for when I had to head over to buy their prohibitively expensive USB to Lightning connector to connect my new iphone to the home theatre (and the dongle didn't even support video, only audio output). And finally, the base model came with 3 years' onsite warranty included in the price (I ordered from the UK). That was an added bonus. I found a coupon online that gave me a good additional discount.. So I spent nowhere near the humungous amounts that are being bandied abbout in reviews. In total, I spent probably the same for the X1 Carbon as I did for my X220 6 years ago! And last but not the least, you will thank yourself that you got a machine that has proper ports and don't skimp on them (such as the macbook pro 13" stuck with only one USB-C port). I popped over to the store across the road to buy a usb stick and wil stick it into the USB 3.0 of the X1C5 to create a recovery disk. Easy! I don't have to take time off from my busy life to plan a trip to the Apple Store.

Just handling this laptop over the last two days, and how it has surfed breezily though everything I put it through reminds me of my trustee companion, the Thinkpad X220i (the base model again) in 2011 that never let me down and still runs like a dream after 6 years. It reminds me of my beloved second hand Thinkpad R52, a true blue IBM laptop all of 7 pounds that hardly left my desk but got me through my toughest days with school exams, dissertation and job search, lasting me 6 years. I still have it and it still works (great for sending an email or two or typing out long word documents). Thinkpads have been a part of my life ever since I have been independent and made my life in a foreign country with no cushion to speak of. So over the years too I have come to trust their quality and I have never been let down in my last 12 years as a Thinkpad user. I waited 5 years to get the X1 Carbon as it wasn't right for me back in 2012. But the 5th Gen with it's smaller footprint (a 14" inch screen in a 13" bezel as the famous saying goes) is the perfect fit for me and the reason I decided to upgrade from the X220 as the HD screen was slightly too limited for me. I plan to use my X1C5 for the next 6 years atleast if not more as the screen size vs the footprint of the laptop hits the sweet spot for me!

 

Is there anywhere a review of the WQHD display?

 

I haven't really seen any review of that specific screen anywhere, sorry.

 

Do you know if it's possible to mount a second ssd?

 

Supposedly no. The WWAN slot is only USB and has no SATA connection.

 

But do you like it?

I like mine too. Waited for 5 generations. It was a long wait.

 

Ok, less than a week of using it. The X1C5 was worth the looong 5 year wait. I really like it

 

Seriously? Never imagined anyone can be unhappy about the back-lit keyboard in comparison to that silly LED torch which seemed like a "there I fixed it" solution

Having had my Vaio with back-lit keyboard for about 7 years in parallel with a 2 years newer T420 with a torch, I could never understand how anyone could release such a "misunderstanding" to the market

So happy to finally have a decent solution for typing in the dark.

 

I loved the 'torch' . Functioned perfectly well as a late night study lamp to go back and forth between my notes and typing. The backlight, I have to admit, looks so futuristic! I'm not complaining haha.
Congratluations by the way on your X1C5!

 

Having used both I thought the non-backlit keyboards felt better and I prefer the ThinkLight too.

 

I always wondered why would anyone care about backlight in a keyboard? I want a good keyboard so I wouldn't need to look at it while I type. Just like I wondered why would anyone want a great screen on a laptop and for it to be a touchscreen (what use is a great screen if it's going to be smudgy all over).

But then, as I switched between different keyboards and laptops, I struggled to remember where my vol-up/vol-down keys were on my XPS13 and I switched the backlight on ;-) I *still* haven't found a use for a touchscreen on a laptop, though.

I've put in an CTO order for an X1 Carbon with WQHD screen: hopefully screen is not worse than the one on the previous generation, since I can't wait any longer to see how it reviews ;-) Lenovo Serbia has stopped responding to my enquiries so I ordered from USA (which means no NFC keyboard or IR webcam, but I am guessing I'll survive) and it will only ship on July 17th, so hopefully I have it here by the end of the month.

 

Also looking at the X1 Carbon with WQHD. I want to buy one locally and I haven't seen the top seller models available yet with such in the store

Only Lenovo Thinkpad vender locally I know of is BH Photo Video as every other distribution channel seems to be online or through a Lenovo partner where they don't keep inventory and charge inflated prices.

Will wait to see if any psref changes occur and new models come out in July or August or even September but I really want to buy one soon as I can't wait forever.

 

unfortunately not in the US

Sent from my HTC 10 using Tapatalk

 

Ethernet dongle is not included in US orders? That would be very annoying, since there wasn't an option to add it as an accessory either (I've chosen a USB-C to DP adapter, but ethernet dongle was nowhere to be found, and noticed that on Lenovo UK site you have to choose it explicitely, but it adds nothing to the price there).

 

But as far as ultrathin notebook keyboards are concerned, the current backlit Thinkpad keyboards are nice.

 

What's everyone display scaling set at?

 

Really? That sucks.

 

Hi Danilo, I hope the US policy has changed in the meantime (I ordered from the UK and it was not a problem) and you are well surprised with the ethernet dongle when your computer finally arrives. Let us know how it goes.

 

I have set my scaling at 125 on the FHD screen of the X1C5 (as an upgrade from my previous HD screen). I find this comfortable for leisurely reading. However, I believe if I was using it solely for excel spreadsheets I would have preferred to scale at 115 but you need to concentrate a bit harder on the screen (I just manually zoom out when I'm working on excel and leave the rest of the system at 125). I scoured the forums prior to this and the answers seem to range between 100 and 115.

 

Hi I have received my X1C (i7, 16GB, 512GB) this week, love it so far I had used a T420s and a T450s at my previous employer.

It does run a little hot, this is now solved by undervolting 55/55/30 core/cache/gpu. In normal use word processing, browsing etc it runs in the 38-45 Celsius range.

I did notice when undervolting that the CPU wasn't idling that well. Has anyone else's WMI Provider Host process sitting at between 1-2% CPU?

 

As for scaling, I run Ubuntu, but even on my XPS 13, I generally use 1.25 scaling on 3200x1800 13.3" screen for UI elements, and 1.38 scaling in my browser and wherever there's actual long text to be read. With 2560x1440 at 14", I'll probably just run it at 1x (I do wear glasses or contacts, but with them my vision is better than 20/20). I was now intrigued and checked if it would be possible to easily reuse Fujitsu U904 screen (a wonderful 14" Sharp IGZO panel available without a touch layer with 400 nits brightness), but it seems to use eDP connector with 50 pins as opposed to X1 Carbon using a 40 pin connector. Not that it'd be easy for me to try that since I've already sold U904 off.

Does anyone with a NFC-enabled "keyboard" (well, mostly touchpad) know the difference between part numbers 01AY022 and 01AY023: the first is listed as "CS16_2BCP,GLASS,BLACK,NFC, CHY", and the other as "CS16_2BCP,GLASS,BLACK,NFC, TRA"? Does this touchpad provide any special hardware for NFC, or is it just the cable that is different? They supposedly (page 58 of HMM) come with "NFC antenna kit", so there is a separate cable to connect to NFC card (though don't confuse it with a joint trackpad cable that goes to fingerprint reader and NFC card). Does anyone with a non-NFC keyboard have a photo of the trackpad cable and connections to compare? Basically, does everyone get the same trackpad cable from page 59?

Are they needed on top of NFC module ( 01AX745, "Lenovo Wireless, Nfc, Fxn, Npc300") to add NFC support? Anyone opened it up (bottom cover and battery need to go out, according to page 87 of HMM) and has a few better photos? Seems "NFC support bracket" mentioned in the HMM is included with this part.

I am guessing one of the trackpad parts and the NFC module part is what's needed to add NFC support to a non-NFC X1 Carbon (which makes it an $85 upgrade according to https://lenovo.encompass.com), but I wonder if someone knows more, including if there are cheaper options to get these replacement parts

 

All I know is CHY is the Manufacturer Chicony.

 

Cheers Daniel, that's at least something (i.e. if it's just different manufacturers, no big deal).

 

Are the 256 GB PCIe drives that ship with the X1C5 also Samsung made drives (PM961) or just the 512 / 1 TB drives?

All the reviews I've found confirm PM961, but are also all for units with 512 GB drives. If I might end up with a Toshiba or other slower drive I'll probably just go with the 128 GB option and upgrade later.

 

Just pulled the trigger on an X1C5 and it feels great. I probably won't see it for another 3 weeks or so but I'm happy to be in the club. My first jump into the thinkpad line of laptops and I'm pretty excited to see what makes them so popular.

 

Finally jumped and bought the X1C5 here too. The price when this model was first released was hard to swallow, but with the 30% off / "THINKPADSALE" discount right now it's a steal.

For those who would benefit from (closer to) workstation class performance it might be worth waiting for the inevitable X1C5.5 / X1C6 update with intel's new 15W quad cores (i5-8250U)...

 

Well, it has been a long wait, but the WQHD screen is finally available in the UK so I have placed my new order having returned my HD model in March due to the issues above. In the meantime, I've tried a 4k XPS 13, a HP Spectre X360 and an X1 Yoga Gen 2, but nothing has eclipsed my initial love for the X1 Carbon (apart from the incredible OLED screen on the X1 Yoga!). As a bonus I've now been able to order the IR webcam option that wasn't available back in March. My fingers are crossed that the new arrival will be worth the wait!

 

Is it worth saving up for the X1 or just getting the T470/T470s?

 

It depends on your expectations. For me the X1 Carbon was really worth it. I am quite happy knowing I can't upgrade my RAM. I am not a big person, so portability was essential. The battery is amazing and lasts me 12-14 hours daily for tasks on excel, word and watching the occasional movie. I am always on the road, so I need something THIN as well as LIGHT that's not going to eat up space and weight for my limited cabin baggage allowance. And for all this, I get a 14 inch FHD screen. Never been happier. Even my X220 at 3.3 pounds didn't even come close as a travelling companion.

Here's why I preferred the X1 Carbon 5th Gen:
Thickness:
T470 - 0.8 inch
T470s - 0.7 inch
X1 Carbon - 0.65 inch

Weight
T470 - 3.5 pounds with the smallet 3 cell battery
T470s - 2.9 pounds
X1 Carbon - 2.49 pounds

Yes, there is a world of difference between 2.49 pounds and 2.9 pounds. The former passes the one hand test for me, and as I travel alot it was important for me not to get bogged down toting my computer around. It's a business tool for me, and I don't want to notice it except when I need it to use it.

 

I don't understand why Lenovo is not releasing the X1C with Wi-Gig in North America. Is the Wi-Fi antenna the same for Wi-Gig? In the future, can I just install the Intel Wi-Gig card to get Wi-Gig? Or I need the Wi-Gig antennas as well?