![]() High-Speed SSD Slots (up to 40Gb/s vs.1 x PCI Express 3.0 x16 for GPUs / 4 x SATA 6Gb/s / 1 x PCI Express 2.0 x1 for TV tuner cards) The motherboard must be compatible with the chosen CPU and fit into the chosen case form factor. Intel (with legal UHD Blu-ray disc support): The CPU should remain mostly idle during HTPC use. ![]() So don't worry too much about the CPU and motherboard. The critical component of a HTPC is the GPU. Otherwise, any CPU is appropriate as long as you are satisfied with boot times and OS performance. The choice of CPU is only relevant if you want legal playback of UHD Blu-ray disks (not rips). If you want legal playback of UHD Blu-ray discs, Intel Kaby Lake (7th generation) Core i5 or i7 processors are a minimum requirement for compatibility with UHD Blu-ray drives. So we will assume the bulk of difficult 10-bit HEVC decoding will be handled by a fixed-function GPU hardware decoder capable of handling high-bitrate decoding. But, coupled with slow HEVC decoding, the load posed by 4K UHD Blu-ray is formidable for any CPU or hardware decoder. Those bitrates include both audio and video. The computing power required to decode HEVC is 5-10 times higher than equivalent H.264/MPEG-4 AVC.Ĭonsidering the UHD standard calls for data rates of up to 82 Mbit/s for 50 GB discs, 108 Mbit/s for 66 GB discs and 128 Mbit/s for 100 GB discs, even low bitrate 4K UHD content is close to double the bitrate of 1080p Blu-ray ( max. It is unrealistic for all but the most powerful modern CPUs to decode high-bitrate, 10-bit 4K HEVC video using CPU-based (software) decoding. Both SDR and HDR content will playback correctly with automatic EOTF and color space switching. Therefore, this guide is incomplete and anyone looking to build a 4K HTPC in 2019 should proceed with caution until PC support of UHD Blu-ray and 4K UHD media is more mature.Ĭurrently, madVR is the only media software on Windows that supports HDR10 metadata passthrough using APIs provided by AMD and Nvidia without relying on forced system-wide HDR output offered by Windows 10. The current landscape of UHD technology is shifting and true 4K UHD PC support is still new. This guide outlines the hardware necessary to achieve high-performance playback from madVR at 3840 x 2160p. ![]() What Is madVR? | Complete madVR Set up | How to Get Help
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