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    T440s versus T450s

    Discussion in 'Lenovo' started by Thors.Hammer, Feb 4, 2015.

  1. Thors.Hammer

    Thors.Hammer Notebook Enthusiast

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    Hello,

    Were there any other improvements or changes to the T450s I missed below?

    1. New processor chipset
    2. New trackpad with buttons

    TABOOK still shows the FHD screen to be IPS. Any reason to believe that isn't true?

    Thanks!
     
    Thors.Hammer, Feb 4, 2015
    #1
  2. ibmthink

    ibmthink Notebookcheck Deity

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    Thats about it.

    TABOOK mentions that the material of the base-unit might have changed (Magnesium/Aluminum instead of Magnesium Alloy)

    Also, according to the parts-list, there are new display FRUs, replacing the old AUO and LG screens with new versions (LP140WF1-SPK1 gets replaced with LP140WF3-SPD1 for example). All the FHD screens used in the T450s are IPS.
     
    ibmthink, Feb 4, 2015
    #2
  3. JNavas

    JNavas Notebook Geek

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    Better integrated graphics.
    7265 WLAN vs 7260 WLAN.
    Full HD panel is IPS.
     
    JNavas, Apr 4, 2015
    #3
  4. GreenStorm

    GreenStorm Notebook Enthusiast

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    Oh, and with Broadwell comes the 16GB-DIMM-support. Haswell only takes up to 8GB-modules.
    -> Haswell / T440s -> Max. RAM is 12GB & with Broadwell / T450s it is 20GB. (4GB onboard + 16GB-DIMM)
     
    GreenStorm, Apr 11, 2015
    #4
  5. JNavas

    JNavas Notebook Geek

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    Yes, but thanks to 4 GB soldered, any configuration other than 8 GB works in part in single channel mode, which can significantly reduce performance, and the problem gets worse the more memory you add.
     
    JNavas, Apr 11, 2015
    #5
  6. hawkeye62

    hawkeye62 Notebook Evangelist

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    Would a configuration with the soldered 4 GB plus 8 GB be better or worse than 4 GB soldered plus 4 GB for a load that really only needed 8 GB?

    Regards, Jim
     
    hawkeye62, Apr 11, 2015
    #6
  7. dblkk

    dblkk Notebook Evangelist

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    If you truely only need and use 8gb, 2x4gb would be the best performance.

    But, if you need more ram, once you hit that 8gb ceiling, your performance hit would be great.

    I probably use mine harder than you, but i have 2x8gb in. With 20 chrome tabs, excel, one note, a vm (2gb ram dedicated), and itunes. I'm running at 15.5gb used and 95%.
     
    dblkk, Apr 11, 2015
    #7
  8. GreenStorm

    GreenStorm Notebook Enthusiast

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    Same thing here - I have 16GB RAM in my 2760P EliteBook, usually without a VM. Opera (around 100-150 tabs I imagine), Outlook, OneNote, Word, Thunderbird ~10-12GB usage. With the VM I hit 14GB - which is still fine and gives me room to breathe for a youtube-video or so.

    I really wonder whether 12GB is a good idea.
     
    GreenStorm, Apr 13, 2015
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  9. MidnightSun

    MidnightSun Emodicon

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    Running mismatched sticks will not hurt your performance in any noticeable way. An 8GB stick will run in asymmetric DDR mode with the soldered 4GB of RAM, providing both the extra headroom and the improved integrated graphics RAM performance.

    Don't overthink it. If your usage can utilize additional memory, go for an 8GB stick. Windows will made good use of "unused" memory for cache anyway, so any theoretical slowdowns would still be negated by the benefits of having more cache space.
     
    MidnightSun, Apr 14, 2015
    #9