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HDR Performance Issues
Quote:Both graphics cards lose a bit of headroom when moving to HDR, but the Radeon Vega 64 is in far better shape overall. In fact, the impact of gaming in HDR is significant enough on the whole to flip the performance metrics, with AMD outperforming Nvidia by a full 10 percent. Given that the gap between the two cards typically favors Nvidia, the jump is significant.
Quote:Whether due to driver-level issues or not is unclear; however, it could also have something to do with the way NVIDIA's graphics cards process 4K RGB signals by applying color compression down to reduced chroma YCbCr 4:2:2 in HDR - an extra amount of work that could reduce frame rendering. However, it's interesting to note how Mass Effect Andromeda, one of the games NVIDIA gave a big marketing push for and that showcased HDR implementation, sees no performance differential on the green hardware.I also seem to remember some issues regarding AMD's frame time performance being abysmal - looking at Computerbase's results, howveer, those times seem to be behind us.

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