Is Displaying Photos on a Computer More Efficient with a Dedicated Video Card?

  • Thread starter Alex_Sanders
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In summary, displaying a photo on a computer screen requires both the CPU and video card to work together. However, there have been discussions about whether the task of displaying a photo should be solely assigned to the video card. Some believe that it would be more efficient to have the CPU decode the photo and then pass the data to the video card. This approach would require a newly developed software to be installed on the video card. However, there may be reasons why this is not currently the standard practice. This is similar to the ongoing debate in the tech world about whether certain tasks should be assigned to specialized hardware or the CPU. The most efficient approach seems to constantly shift and evolve over time.
  • #1
Alex_Sanders
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If you try to drag a large photo in your not-so-newly assembled computer, you'll notice there is a lag, it's because displaying a photo on your screen combines works of both CPU and your video card as we know.

I know some of the graphical work has been "outsourced" to video card, but I'm really not sure if displaying a picture or a photo has been tasked to video card only? I don't think there would be any technical difficulties, after all, letting CPU decode a jpg file and then pass processed data to video card telling it what to display seems to be a pretty redundant, it can be done in this way: CPU detects the request of displaying a jpg file, then it surrender the control of the main bus temporarily to GPU, GPU reads the file directly from the RAM or even harddrive, then display the file, the decoding can be done hardwarely with codex stored inside a FPGA.

All we need, is a newly developed software that comes with the video card we bought.

And I know it quite well that since things are not done this way, there must be reasons. What are they? Or may be some of my thoughts has been done? Like calculating 3D graphics?
 
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  • #2
it is analogous to smart terminals versus dumb terminals. Time and time again, designers move tasks from the CPU to specialized hardware. Time and again, other designers move them back. Hackers call it the cycle of reincarnation.The best way keeps shifting.
 

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