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    e1705 truelife, support higher than 60hx refresh rates?

    Discussion in 'Dell' started by amit84, Aug 9, 2006.

  1. amit84

    amit84 Notebook Enthusiast

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    is it safer on lcd screens especially the one one on the e1705 truelife display to raise the refresh rate, if so, how high can i go on 1920x1200 , 1024x768, and all the important res
     
    amit84, Aug 9, 2006
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  2. xAMDvsIntelx

    xAMDvsIntelx Notebook Deity

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    60Hz is the only refresh rate is the only choice not only on the E1705, but on all PC laptops. I believe some of Apple's notebooks have a refresh rate of 61Hz or 62Hz, but I can't remember if those were the PowerBooks/iBooks or the MacBook s/MacBook Pros.
     
    xAMDvsIntelx, Aug 9, 2006
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  3. teamkillahilla

    teamkillahilla Notebook Evangelist

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    why is it only 60Hz? I mean 60Hz on a notebook clearly are better for the eyes than 60Hz on a crt monitor.. how come? (of course, because of leds, but why)
     
    teamkillahilla, Aug 9, 2006
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  4. Emotion

    Emotion Notebook Guru

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    it's balance between performance and power. The Nvidia power M can reduce the 60Hz into 50Hz to save LCD power but while in that mode it won't be able to run fullscreen 3d app... actually any 3d apples i think it cuts down opengl / 3D. I believe 60Hz is the lucky number in both wholes :D
     
    Emotion, Aug 9, 2006
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  5. spookyu

    spookyu NBR Zombie Expert

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    Ha, my friend has an NX860 that has a refresh rate of 59Hz for some stupid reason (probably a flaw in the screen and they just stuck it on the laptops anyway).
     
    spookyu, Aug 9, 2006
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  6. drumfu

    drumfu super modfu

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    LCDs don't have refresh rates; only CRTs do
     
    drumfu, Aug 9, 2006
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  7. Charles P. Jefferies

    Charles P. Jefferies Lead Moderator Super Moderator

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    Right; LCD's can be compared using refresh times, measured in milliseconds.
     
    Charles P. Jefferies, Aug 9, 2006
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  8. Leshii

    Leshii Notebook Evangelist

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    In CRTs there's an electron beam that "paints" lines on the monitor. If it does not "repaint" the lines fast enough you notice flickering. Refresh rate tells yo how many times a second the screen gets repainted.
    The higher the refresh rate, less flickering there is.

    In LCDs there is a mosaic of crystals that illuminate as the current is passed through them. The picture on LCDs does not get "repainted" (it is static), crystals simply change color when voltage to them changes.

    This means that LCDs are flicker free and the term as refresh rate is not applicable.

    Instead, screen response time is measured. There are two different response times usually measured:
    Time Rising Time Falling (TrTf) - the time it takes for the crystal to turn on and turn off again (usually from 10% brightness to 90% brightness and vice versa)

    and

    Grey-To-Grey (GTG) - the time it takes for the crystal to change from one color in the greyscale to another.
     
    Leshii, Aug 9, 2006
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  9. jeffmd

    jeffmd Notebook Evangelist

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    Cant say my newer cutting edge lcd's look like they are capable of displaying more then 60 frames, however I also couldn't care less. If my games are running more then 60 frames it means I havnt turned on enough eye candy. ;)

    Seriously, my games never run more then 60 fps, the only reason I ran my crt monitors at high refresh was because they flickered at 60hz.
     
    jeffmd, Aug 9, 2006
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