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post #1 of 3 Old 01-02-2020, 09:29 PM - Thread Starter
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CPU/GPU Load - 1920x1080 vs 3840x2160 ?

probably a dumb question, but does feeding video to a 3840 x 2160 display put more of a load on the cpu/gpu than feeding video to a 1920 x 1080 display, assuming display and output resolutions match?


for example, if i have a 1920 x 1080 display and send it a 1920 x 1080 video, would that put less of a load on the cpu/gpu than if i have a 3840 x 2160 display and send it a 3840 x 2160 video?


thanks!
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post #2 of 3 Old 01-02-2020, 11:03 PM
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Originally Posted by aeneas01 View Post
probably a dumb question, but does feeding video to a 3840 x 2160 display put more of a load on the cpu/gpu than feeding video to a 1920 x 1080 display, assuming display and output resolutions match?


for example, if i have a 1920 x 1080 display and send it a 1920 x 1080 video, would that put less of a load on the cpu/gpu than if i have a 3840 x 2160 display and send it a 3840 x 2160 video?


thanks!
Yes. 1920x1080 is simply 1/4th the data for the video card to process. In addition, that video is not uncompressed. So you're also having to decode the video and it's going to be higher bitrate and perhaps a more difficult to decompress codec (h265 vs h264).

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post #3 of 3 Old 01-03-2020, 12:56 AM - Thread Starter
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Originally Posted by markmon1 View Post
Yes. 1920x1080 is simply 1/4th the data for the video card to process. In addition, that video is not uncompressed. So you're also having to decode the video and it's going to be higher bitrate and perhaps a more difficult to decompress codec (h265 vs h264).

yep, was afraid of that, but wanted to make sure my windows system was performing as expected... i played around with madvr using 1080p videos and a 1920x1080 display and was very impressed with how well the intel igpu (655) handled the load at various settings, then i tried the same thing with 3840 hdr videos and a 3840x2160 display and the performance with madvr plummeted as the load went way up.
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