Stay away from P51s and other Lenovo laptops.
I received two defective P51s in a raw.
The first laptop I ordered from them would randomly fail to boot (BIOS/UEFI wouldn't load) one time out of three.
They sent a replacement, and guess what... exactly the same problem. Out of the box.

You mention a colour profile in this review. Any chance you can share it? I'm really not happy with the calibration of this screen and the Pantone calibrator is terrible.

Cheers!

@mintrap:

1.95 kg is an unrealistic minimum weight of the laptop that may exclude certain parts like the memory and storage for marketing purposes.
In fact, I'd advise against trusting almost content on a advert or sales webpage, but rather search for officially released documents such as "user-guide", "manual", or "specifications sheet". While Lenovo is on the mild side, other ODMs aren't quite as candid.

With the P51s, depending on the model, one has an option for a touch/non-touch screen and a removable secondary battery with sizes of 24, 46, or 72 Whr, which will determine the ultimate weight of the laptop

Lenovo provides a detailed spec-sheet known as "System Platform Specifications" or "PSREF" that includes all the accurate measurements. According to the document, NBC's measurement of 2.2 kg is accurate, as it is always.

Source:
http://psref.lenovo.com/syspool/Sys/PDF/ThinkPad/ThinkPad%20P51s/ThinkPad_P51s_Platform_Specifications.pdf

On lenovo US web, it mentions the P51s weight is 1.95 kg / 4.3 lbs, while this review said it's 2.2 kg / 4.85 lbs. Which is the correct one?

Absolutely ridiculously priced for what it is, both user-experience-wise and specifications-wise.  It is about 10% cheaper than a Macbook Pro 15 inch and way more than a Dell.  Both of which features better hardware. The Macbook Pro has that nice, responsive trackpad and superior user-experience, top-notch screen, sound, form-factor, 4 USB-C TB3 ports, although with less total ports and a crappier keyboard.

"Mobile Workstation", or any other advertised name or usage or whatever they stamp on a product is only a title. It means nothing. Absolutely nothing. Naturally, it's up to consumers to do the research beforehand to figure out what they want to use a device for.

Having said that, the P51s sits a unique position, with almost no competitor or suitable category to fit in, which is probably what makes it sell. (That, and Lenovo's generous holiday sale that lowers the price to a meager US$1K)

For the msrp, hardware is ludicrous. Screen, audio and GPU selection of the P51s are poor. Performance of storage, the slowest component, is cut in half as PCIe only supports two lanes. And comparing with other 15" systems like the 15" LG Gram or Samsung Notebook 9, it's almost twice as heavy. Internals tell me Lenovo has made no effort to make them more compact or shrink the size of the machine in other ways.

As for the ports, they're beneath my standards. On a 15", I expect x4 USB-3-A ports, x1 TB3 with x4 lanes, and a lastest gen DP/miniDP as a minimum. This laptop uses HDMI and DP standards from 8 years ago, with only x2 lane TB3. Unbelievable. And I use both trackpoint and trackpad, for different tasks. My issue is with the latter, which is better than anything Lenovo's made before 2017, but still full of glaring bugs. To add to the issue, MS Precision allows hardly any customization, and there's been no decent third party software for trackpads in two decades of laptop history.

Keyboard is good, but not excellent or even great by business standards. Backlit keboards on Thinkpads have unusually smooth plastic finish, which makes it a nightmare to type with long nails. On top of that, there is a great deal of backlight bleed when trying to use the laptop from distance. Also, according to Laptopmag's T570 review, key travel has been reduced from 2.4 to 1.6mm. Yes, the keyboard is replaceable and a bit spill-proof and, but that doesn't further improve my typing experience. Which essentially makes it no better than 500$ budget laptops', and some of those even have complete waterproof.

Thermals and power consumption tell me Lenovo's tweaks obviously can't handle even a dual core processor load, and I suspect this is partially due to the new 25 watt TDP (despite what this review says, idk).

Now despite all the complaints, there are no other 15.6" laptops with this much battery life and durability. Those two items are my utmost priority, but so is the display. Personally, I prefer an FHD screen, but NBC's T570-FHD review informed me of its disappointing quality, so I'm very glad I didn't buy this laptop.

Thanks for the excellent review. Would you have a full review for the Thinkpad P51, xeon, 4K screen?? Thinking seriously about buying one soon. Thanks!

"Mobile Workstation" ... are you having a laugh? Lenovo have completely lost their way (and their minds). Laptops from DELL cost half the price, have twice the quality of screen, and leave this Workstation for dead performance wise. If it wasn't for the Lenovo keyboard nobody would buy it.

Wooow, i7-7600U workstation for 2300E  :D

Another turd from Lenovo.

A 15.6 laptop that's not small or thin by any means. Neither has very hot videocard throttles.

And let me not start the PWM discussion. How come companies are able to build non-PWM screens even in their basic machines, while Lenovo continues to produce 3k euro machines with it.