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6 Posts

11-27-2013

Canada

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Clarification for t540p FHD display (Canada)

2013-11-27, 4:43 AM

I am confused if the FHD display for the T540p is an IPS panel or not. 

 

There is a forum post at notebookreview.com that suggests that the FHD display is a TN panel. They came to this conclusion from the FRU parts list for the T540p. Here is the link to that forum post: http://forum.notebookreview.com/lenovo/738404-t540p-t440p-heatsink-fan-display-panel-info.html

 

I tried looking at the other markets that sell the T540p that are non-english (China/Japan) and saw that they do not mention IPS for the FHD display unlike Canada/US.

 

Is this a regional difference or a mistranslation?

 

Thank you,

Andrei M.

 

Canada link:

http://shop.lenovo.com/ca/en/laptops/thinkpad/t-series/t540p#techspecs

Japan link:

http://translate.google.ca/translate?hl=en&sl=auto&tl=en&prev=_dd&u=http%3A%2F%2Fshopap.lenovo.com%2Fjp%2Fnotebooks%2Fthinkpad%2Ft-series%2Ft540p%2F%23%25E7%259B%25B4%25E8%25B2%25A9%25E3%2583%25A2%25E3%2583%2587%25E3%2583%25AB%25E4%25BB%2595%25E6%25A7%2598

China link:

http://translate.google.ca/translate?hl=en&sl=ja&tl=en&u=http%3A%2F%2Fappserver.lenovo.com.cn%2FLenovo_Product_Detail.aspx%3Fgdsid%3DA1900021179

 

 

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2031 Posts

11-28-2007

Czech Republic

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Re: Clarification for t540p FHD display (Canada)

2013-11-27, 16:52 PM

It is typical confusion made by Lenovo that no longer provides exact part list used in particular model. I think it was just a guess of shops expecting non-TN display in such premium notebook model (that has failed again). You have to wait for reviews (NotebookCheck etc.) to confirm or (rather) deny the IPS panel configuration

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ThinkPad (1992 - 2012): R51, X31, X220, Tablet 8.
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6 Posts

11-27-2013

Canada

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Re: Clarification for t540p FHD display (Canada)

2013-11-27, 17:49 PM
My confusion is that Lenovo's own regional websites contradict one another.

In the end I would expect an IPS panel for a $170 charge considering that the T440p has the FHD IPS option for $200.

I am not willing to guess it is IPS when it comes to that, and it would be a shame if it is a cheap TN for that amount of $.
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2031 Posts

11-28-2007

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Re: Clarification for t540p FHD display (Canada)

2013-11-28, 9:33 AM

You can use PSREF http://www.lenovo.com/psref/pdf/tabook.pdf information (page 146) that does not confirm IPS (or other non-TN technology) for 15.6" FHD panels of T540p :smileyfrustrated:

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3 Posts

12-18-2013

Kingston

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Re: Clarification for t540p FHD display (Canada)

2013-12-18, 3:44 AM

Any news on this? I was about the order a T540P with IPS display but I don't want to be fooled. 

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6 Posts

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Canada

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Re: Clarification for t540p FHD display (Canada)

2013-12-18, 4:12 AM

I received the T540P with the FHD panel, I returned it. Mine was NOT an IPS panel. (The PSREF above is correct)

 

It is a very poor TN panel, I never saw something like it before. The viewing angles where bad but my main issue was the size of the pixel gaps.

 

Maybe I had a manufacturing defect, I don't know. The gaps between pixels were so big as to cause an uneven color when looking at the screen (I have very good eyesight). Instead of white for example I would see a white with vertical "gray" bands in it. The effect dissapeared when I was farther than my arms could reach the keyboard or if I was very close to the screen, so if your eyesight is not amazing you won't notice this. What I can say was that this effect was very distracting on my eyes. I never saw this issue on any other panel out there,  not this noticeable at any rate.

 

Others I showed the panel either could not see this effect or very minimal if they tried. They did not have good eyesight however.

 

I do not intend to scare you with this, it is my personal experience with the FHD display I received. Good thing Lenovo is offering hassle free returns, it was a big plus in me taking a chance and seeing this panel in person.

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12-18-2013

Kingston

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Re: Clarification for t540p FHD display (Canada)

2013-12-18, 4:37 AM

Thanks a lot for the info! From what I read from other forums as well, it seems clear that they ship T540P with TN not IPS panels. My eyesight is not that good and I use a pretty bad display now (768dpi) so I may even perceive the TN 1080dpi panel as much better compared my old one. But the reason why I want to get a new PC & new display is to get the the best one possible. It is disturbing that Lenovo attempts to decieve its costumers (either willingly or unwillingly).

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6 Posts

11-27-2013

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Re: Clarification for t540p FHD display (Canada)

2013-12-18, 5:15 AM

Good luck with your buying decision! I am guessing Lenovo really wants to force everyone who wants nice screens to pay up for the 3K. Though the DPI scaling would work better for those panels compared to the 1080p ones, if you prefer text to be similar in size as your curent monitor on applications that Windows has to scale up.

 

If you decide to use scaling to make the text bigger anything that is not an integer can give off blury text in applications where Windows has to fake the scaling. The table at the bottom of this link explains it well ( http://technet.microsoft.com/en-us/library/dn528847.aspx )

 

For the 15.6 inch here are the dot pitches for the different resolutions:

HD(1366x768): 0.2529mm

FHD(1920x1080): 0.1799mm (1.4X smaller text)

3K(2880X1620): 0.1191mm (2.1X smaller text)

3K with 200% DPI: 0.2382mm (1.06X smaller text)

http://members.ping.de/~sven/dpi.html

 

So, the size of the text from large to small would be (768p > 3K with 200% DPI > 1080p > 3K) 

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Kingston

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Re: Clarification for t540p FHD display (Canada)

2013-12-18, 5:31 AM

Many thanks! From what you are telling I understand that with 3K display I can have big text with a much higher clarity (just as in Macbook Retina). I think I will go for it as I don't need much space. 

 

Have you ever used the 3K display by yourself? There seems to be no reviews for that on the internet. Does it require a very strong system (i7, 8gb ram etc.) or would it be fine with a mid-range performance system (i5, 4gb ram, hd integrated graphics etc.)? By fine I mean: quiet and fast. Any thoughts?

 

 

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6 Posts

11-27-2013

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Re: Clarification for t540p FHD display (Canada)

2013-12-18, 6:39 AM

I did not try the 3K (ordered but not in my hands yet) so take it with a grain of salt what I am saying. I do not know how you use your current machine for.

 

For browsing/word processing/videos/flash games the integrated graphics and i5 should be more than enough.

 

Upgrade the CPU/GPU mainly if you want more speed for demanding apps where you either want the experience to be smoother or you want to wait less for some tasks to finish. (think video rendering, compiling, playing 3D games).

You can go to this website and get a comparison between what you have and how much better it would be. (Take with a grain of salt):

http://www.notebookcheck.net/Mobile-Processors-Benchmarklist.2436.0.html

http://www.cpubenchmark.net/

Similarly for GPU's:

http://www.notebookcheck.net/Mobile-Graphics-Cards-Benchmark-List.844.0.html

http://www.videocardbenchmark.net/

 

Thing to keep in mind, the more you upgrade the CPU/GPU, the bigger the powerbrick gets, the more heat it will generate under max load. The normal one is 65W with a i5-4200M and it goes to 125W with a Quad core and the GPU. The battery life would also go down when you use the laptop with the demanding apps. (It shoudn't affect browsing)

 

 

Memory helps a lot if you like having a ton of windows open but provides no benefits if that memory is not being used. Windows likes using spare RAM for caching making applications launch faster in the future. I would say your typical RAM usage plus a gig or two to cache stuff would be ideal. Even with 4 Gigs you can open a fair bit of browser windows before it becomes an issue. If you are interested in reading more about this:

http://en.wikipedia.org/wiki/Prefetcher (and SuperFetch)

 

The RAM you can upgrade yourself at a fraction of the price, I would get the 4GB stick and go to a computer store and get another stick with 4 or 8GB if you feel confident with doing that. Lenovo offers videos/articles explaining how to do that.

 

Here is about the only in depth review I could find it is in Chinese but yay for Google Translate:

http://translate.google.com/translate?hl=en&sl=auto&tl=en&prev=_dd&u=http%3A%2F%2Fnotebook.it168.com%2Fa2013%2F1125%2F1564%2F000001564775_all.shtml

 

There are also people talking about the T540p here (Maibe someone there can help you with questions about the 3K):

http://forum.notebookreview.com/lenovo/736142-t540p.html

 

 

 

 

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