Actually there is quite the story behind all of this. And I’ll actually check out the specs of the T440 once home.
I’ll try and summarise. Back in 2015 I purchased a Lenovo Carbon X 2nd generation (probably 2014) with an i5 processor I believe, 8GB ram, 250GB solid state HDD and touch screen. It was thin and light and just about awesome; a 14" lovely little thing just powerful enough to do what I need to do, slightly slower than on my desktop, when on the road. I began to experience issues with the screen though. Colours would revert to a mix of green/magenta at times, which I could fix when moving the screen a bit. It got worse as time went by and about 2 months ago I decided to finally get it fixed.
Try 1: I took it to this old fella’ who fixes electronics and seems pretty knowledgeable, but he admitted he doesn’t dare open up the all-in-one Lenovo Carbon laptops - he did however say he believes it is either the screen itself that is at fault, or the cable that links it to the mother board.
Try 2: I called this other fella’ who was advertising laptop repairs in my town …but he didn’t even need to take a look at the laptop and emailed right back saying he doesn’t touch Lenovos.
Try 3: I went to STAPLES, an office supplies store around here (come to think of it I should have probably gone to Canada Computers 
), which repairs computers as well. I told them about the issue, and they sent it out to their repair place in Toronto. Each week that passed I had to call there and inquire about the status of the repair, because apparently just when I was calling the technician was just about to call me and update me …every single time I called.
First they ordered a new display cable; which took a week to arrive, and proved to not fix the issue. Secondly they ordered a new screen, which also took a week or so to arrive, and another few days to install, which also I was told did not fix the issue.
As a solution to the problem, I was offered to have the motherboard exchanged - which has an all-in-one design which doesn’t allow you to replace parts one by one (figures). I of course said no, and told them to just the laptop back, thinking I can deal with the colours being off sometimes…
Once returned, the laptop’s screen was no longer working at all. When they said that no amount of replacing things fixed the issue, they meant the screen no longer functioning, but they did not mention that. I was upset and requested the matter to be looked into …which it was, and I was informed that the management’s verdict is that there was an pre-existing issue with the mother board which eventually caused the screen to no longer respond at all, and that it was only a matter of time until this would happen, and that it is a coincidence that it happened while the laptop was with them. All they offered was a $100 in-store gift card.
I went and vented to a whole bunch of people, and eventually my one friend recommended I go to Canada Computers and look at their refurbished laptops, which are generally both good in quality and rather appealing in price. He is a lawyer and definitely not short on cash, but also one who won’t spend money if not necessary. I trusted him and got the T440 and I am happy with it. The processor is slightly slower than what I had in the old laptop, and the thickness is greater, though not by much, but otherwise I am very happy with it, and with a calibrated screen, it works like a charm.
If you’ve read this far, I wasn’t to thank you for letting me vent haha 
Also I totally agree with the premise of this post; travel computing is a must for people who like to tinker (and I mean photographers who want to post photos from on the go and can not go without their RawTherapee edits), and in this case, the 13/14 inch models tend to be a good compromise between power and size/weight. Not to mention they can be plugged into an external screen if the need for more desktop real estate arises.
