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Nvidia NVDEC (formerly known as NVCUVID [1]) is a feature in its graphics cards that performs video decoding, offloading this compute-intensive task from the CPU. [2] NVDEC is a successor of PureVideo and is available in Kepler and later NVIDIA GPUs.
Nvidia also sells PureVideo decoder software which can be used with media players which use DirectShow. Systems with dual GPU's either need to configure the codec or run the application on the Nvidia GPU to utilize PureVideo. Media players which use LAV, ffdshow or Microsoft Media Foundation codecs are able to utilize PureVideo capabilities.
It connects to the host PC via a small form factor PCI Express card connected to the host, and a 2-meter (6.6-foot) Nvidia Quadro Plex Interconnect Cable. The system is housed in an external case that is approximately 9.49 inches in height, 5.94 inches in width, and 20.55 inches in depth and weighs about 19 pounds.
GPU Hardware H.264 (AVC) (In H.264, NVENC always has B Frame support, max 4096x4096 resolution, and max 8-bit depth) H.265 (HEVC) AV1; NVENC Generation GPU Code Name NVENC per Chip Chroma Lossless Coding Chroma Lossless Coding Resolution Color Depth B Frames AV1 4:2:0 4:4:4 4:2:0 4:4:4 1st Gen GK110 1 H.265 not supported AV1 not supported GK107 ...
Many of the Quadro line of video cards use the same GPU cores as Nvidia's consumer-and-gaming-oriented GeForce brand of video cards. The cards that are nearly identical to the desktop cards can be modified [ 33 ] to identify themselves as the equivalent Quadro card to the operating system, allowing optimized drivers intended for the Quadro ...
GPU usage by codec – some codecs can drastically increase their performance by taking advantage of GPU resources. So, for example, codec A (being optimized for memory usage – i.e., uses less memory) may, on modern computers (which are typically not memory-limited), give slower performance than codec B.
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Those physical limitations usually reduce the data rate to between 90 and 95% of the transfer rate. [ citation needed ] NVLink benchmarks show an achievable transfer rate of about 35.3 Gbit/s [ contradictory ] (host to device) for a 40 Gbit/s (2 sub-lanes uplink) NVLink connection towards a P100 GPU in a system that is driven by a set of IBM ...