Precision 7740/ 7540 specs / release date

Discussion in 'Dell Latitude, Vostro, and Precision' started by kvandel, Mar 1, 2019.

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  1. virtualeyes

    virtualeyes Notebook Geek

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    > The 5540 thread is almost dead

    Indeed, where even is it?

    I'm wondering about the OLED screen and requirement to select the larger battery on checkout (I thought OLED consumed less power, not more).

    On a related note, in order to have a 2ndary drive in the system one needs to select the smaller battery; therefore, OLED + large battery === single drive system on the 5540 :\

    The 5540 will spend the vast majority of its life on a desk, not on battery power -- would love to have the best of both worlds here.
     
  2. karman

    karman Notebook Geek

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    OLED consumes much less energy than IPS LCD while displaying dark or black image and way more energy while displaying light or white image.
     
  3. virtualeyes

    virtualeyes Notebook Geek

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    > OLED consumes much less energy than IPS LCD while displaying dark or black image and way more energy while displaying light or white image.

    I see, thanks.

    I use a screen inverter, so am almost always viewing black/dark pixels on laptop and external monitor. Shame, too bad there isn't a checkout option for, "I don't care about battery life", so one can have one's cake and eat it too...OLED + 2X SSD, tasty.
     
  4. karman

    karman Notebook Geek

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    Jesus, it is not about battery life, it is about preventing an overloading your battery by draining too high current. Bigger batter has more cells, so can safely deliver higher current with the same voltage.
     
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  5. Ionising_Radiation

    Ionising_Radiation ?v = ve*ln(m0/m1)

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    The screen would put hardly a dent in the current draw from the battery. I'd be more worried about the CPU and GPU. The GPU alone, even when idle, can draw more than 6 W—more than any notebook display is rated to draw, whether it be TN, IPS, VA or OLED.
     
  6. Hope752

    Hope752 Notebook Enthusiast

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    M.2 512GB NVMe PCIe Class 50 SSD
    Vs
    M.2 512GB PCIe NVMe Class 40 Solid State Drive

    What is the difference interns of read and write speeds?
     
  7. Ionising_Radiation

    Ionising_Radiation ?v = ve*ln(m0/m1)

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    For day-to-day use, negligible. See the Samsung 970 Pro (Class 50) vs the 970 Evo (Class 40).
     
  8. karman

    karman Notebook Geek

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    Please do not misinform other users. OLED panel can draw way more power than CPU, GPU and memory combined in idle: https://www.notebookcheck.net/Razer...igger-differences-than-expected.427069.0.html

    That means that under full load CPU, GPU, memory and OLED display would exceed the smaller battery's safety limits by attempting to draw more current than the battery could safely deliver. Current generation OLED are extremely power hungry displaying bright or white image. It is not a huge problem in TV, in mobile phones it was solved with dark modes, but in notebooks it is still an issue.

    @Dell-Mano_G The 5540 thread is almost dead, so I would like to ask here about the UHD displays in the 5540: the Ultrasharp UHD IGZO4 and the Ultrasharp UHD OLED option. Which is less reflective, less glossy and more matte? I would like to just get a matte UHD option, but it is not available in the 5000 series. Which one has less reflections and is more visible in strong ambient light?
     
    Last edited: Jul 17, 2019
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  9. Hope752

    Hope752 Notebook Enthusiast

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    M.2 512GB PCIe NVMe Class 40 Solid State Drive is the 970 Evo or 970 Evo plus?
     
  10. Aaron44126

    Aaron44126 Notebook Prophet

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    It will probably be closer to 970 EVO in terms of performance. You won't actually get that drive, though, Dell selects a drive that matches certain performance criteria and it could come from one of a few different manufacturers. (7530/7730 systems shipped mostly with Toshiba OEM drives.) When Dell uses a Samsung SSD, it is an OEM model and not a retail one. If you want a specific model drive you will have to buy it yourself aftermarket.
     
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