Custom Resolution Utility (CRU)
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11-28-2016, 08:50 PM
Post: #2440
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RE: Custom Resolution Utility (CRU)
(11-28-2016 08:11 PM)ToastyX Wrote: The GTX 780 does not have HDMI 2.0. 3840x2160 @ 60 Hz should not be possible with HDMI 1.4 except with YCbCr 4:2:0. There's no way to add 3840x1600 @ 60 Hz as a YCbCr 4:2:0 resolution. It should be possible with YCbCr 4:2:2, but the driver might not allow it. To make it work with YCbCr/RGB 4:4:4, you would have to reduce the refresh rate to 50 Hz or lower. I'm not sure what the upper bound is on GTX 780 cards. It should be 340 MHz pixel clock for HDMI 1.4, but some cards might support less. Yeah, I do have to use YCbCr 4:2:0 for now unfortunately to have the 3840x2160 @ 60hz until I have the cash for a newer card that supports HDMI 2.0. I've heard of some people using a HDMI 2.0 to Displayport 1.2 adapter to allow more bandwidth than the HDMI 1.4 port on the card, but I'm not sure how that would work out for me. So pretty much once I upgrade and have that HDMI 2.0 bandwidth allowing me to use 4:4:4, the custom 3840x1600 resolution @ 60hz shouldn't be an issue? |
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