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New M6500 Discussion Thread

Discussion in 'Dell Latitude, Vostro, and Precision' started by Quido, Dec 1, 2009.

  1. Bokeh

    Bokeh Notebook Deity

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    !! - See my post later on in the thread. Much of the information that I posted below is incorrect. The Samsung LTN170CT08-D01 is in fact an 8 bit panel that is made to Dell's specs.

    I am more concerned about the individual points that make up that color gamut. A 6 bit panel will make up the last 2 bits through dithering and flickering pixels to simulate the colors the panel can not create. A 6 bit panel can natively show 262k colors, the other 16+ million of simulated.

    For a lot of people this won't matter. They will never notice any of the issues that come with 6+2 bit panels.

    For a lot of people, the M6500 also won't matter. It is a machine built for people that care about very specific things. The "true 24 bit color" was one of the 3 main reasons I spent the money on this machine. True 18 bit color with pseudo 24 bit color was not what I signed on for.

    The gamut coverage looks great from your plot, but what good is having colors that great when you only get 64 shades of red, green, and blue?
     
  2. louppy40

    louppy40 Newbie

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    I think you are right, as you can see at the picture, on left RGBLED, on the right WLED.
    The difference is in the manufacter reference, J501T RGBLED and C751R WLED.
     
  3. mitchellboy

    mitchellboy Notebook Consultant

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    Hi keithsnell, have you received your m6500. I want to know your feeling about RGB led screen+ATI.
     
  4. giannini

    giannini Notebook Consultant

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    I am doing some tests and there are the results:
    WEI: 6,9

    and:
    --------------------------------------------------
    CrystalDiskMark 2.2 (C) 2007-2008 hiyohiyo
    Crystal Dew World : http://crystalmark.info/
    --------------------------------------------------

    Sequential Read : 334.207 MB/s
    Sequential Write : 241.767 MB/s
    Random Read 512KB : 240.571 MB/s
    Random Write 512KB : 146.483 MB/s
    Random Read 4KB : 11.914 MB/s
    Random Write 4KB : 6.104 MB/s

    Test Size : 100 MB
    Date : 2010/01/27 15:42:24
     

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  5. mannyA

    mannyA Notebook Evangelist

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    Samsung panel + 1920x1200 = SEC5443

    This all = 6 (bit) Color and only 50% Adobe RGB and only 200(nit)

    When you Paid for: 8(bit)Color and 100% Adobe RGB, and 300(nit)

    Scroll down to LTN170CT you will see Brightness = (nit).

    When you should have something like this LG Panel Click on Digital Catalog
    then scroll down to page 7 in the PDF. look for LP171WU5

    The pdf file was too big but here is a clip from that file.
     

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  6. iancalderbank

    iancalderbank Notebook Enthusiast

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    so who is this machine aimed at versus those? am I the market for this machine, I can't work it out now :confused: ?
    I am not a graphics professional who needs the super-duper colour capability. My criteria are for high performance "portable" (read - move from job to job, not do work on airplane/cafe) workstation:

    17" 16:10 screen, dual or triple HDD setup, at least 16gb ram, virtualisation support, latest quad core mobile processor options, all the other latest tech (3G, UWB, USB3), good cooling without noisy fans. graphics to drive 2 or more large digital monitors (on which most work will be done).

    I guess I'd better wait to see what the 8740w looks like.
    Ian
     
  7. mitchellboy

    mitchellboy Notebook Consultant

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    there is something wrong, it is not a rgb led screen.

    LTN170CT
    wide
    features
    size 17.0
    resolution WUXGA
    number of pixels 1,920 X 1,200
    active area (mm²) 367.2 x 229.5
    pixel pitch (mm) 0.191
    number of colors 262K
    contrast ratio (typ.) 600:1
    brightness (cd/m²) 200
    responsetime (ms at 25°C) 16
    viewing angle (U/D/L/R) 45/55/65/65
    interface LVDS(2ch)
    outline dimension (mm) 382.2 x 244.5 x 7.0
    weight (g) 735
    production Now
    http://www.samsung.com/global/busin...pper_fmly_id=601&fmly_id=611&partnum=LTN170CT
     
  8. keithsnell

    keithsnell Notebook Consultant

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    And me as well. I bought the M6500 based primarily on the LCD panel "specs." As soon as you find an exact match to the LCD model number on the manufacturer's site that specifies the display is only 6-bit, then I will believe it is a 6-bit panel. Until then, we are all speculating, and probably getting worked up about the wrong things.

    There is a problem with displaying non-color managed colors accurately on the display. The solution to that problem is in your hands, not Dell's
     
  9. Bokeh

    Bokeh Notebook Deity

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    !! - See my post later on in the thread. Much of the information that I posted below is incorrect. The Samsung LTN170CT08-D01 is in fact an 8 bit panel that is made to Dell's specs.

    The RGBLED backlighting gives 100% of the color gamut. WLED is around 72% and CCFL is around 50%. The LTN170CT panel's color gamut is dependent on the backlighting for its color gamut and brightness specs.

    The Samsung LTN170CT panel is still a 6bit or 6+2bit panel no matter what the backlighting is. You still only get 64 native shades of each color. 8 bit color is simulated with the use of a process called Frame Rate Control (FRC) or "Dithering" to simulate around 16.2 million colors. Samsung says that the newest FRC and Dithering processes can get up to 16.7 million colors or full 8 bit simulation. This simulated 8 bit color from a 6 bit panel is known as 6bits + 2simulated or 6+2bits.

    6 bits is what you get with TN panels. They trade color accuracy for low cost of production and very fast refresh rates. Gamers should love these screens.

    I read that the LG Philips display is actually an IPS screen. This would mean that it has slower refresh rates and more input lag, but you get better color.
     
  10. mitchellboy

    mitchellboy Notebook Consultant

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    So, dell cheated us and lets write a letter or ask notebookreview to tell everyone the truth!
     
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