New Nvidia GPUs Outperform New AMD Cards On H.264 Compression Latency

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By Benjy Boxer

Parsec allows gamers to invite their friends to play offline multiplayer games over the internet, access a cloud gaming PC, or remotely control their gaming PC from anywhere. In game streaming technology, we believe your experience is dictated by three main metrics — a consistent 60 FPS stream, latency, and video quality. A lot of the latency in a streaming session is introduced via the H.264 compression/encoding on the GPU. We analyzed encoding performance on sessions where a friend joined another person’s computer to play some local multiplayer games online. In a previous post, we showed that Nvidia NVENC had the lowest median encoding latency across 250,000 recent Parsec Co-Play sessions. In this article, we’ll dive deeper and examine specific GPU performance.

We analyzed a few of the more recent GPUs released to see if the media encoding latency gap was closed between VCE and NVENC. Unfortunately, the trend got worse. In fact, the newest Nvidia GPUs are outperforming the RX 480, 570, and 580 by more than 3x on encoding latency.

We would love to see AMD VCE close the gap on encoding. This would be extremely valuable to AMD GPU owners, especially since Parsec is one of the only ways that you can remotely access your AMD GPU computer for gaming or share that same computer with friends.

We’ll be introducing the Parsec H.265 option soon, and we’re hoping that AMD’s performance will be closer to Nvidia’s. Early testing, however, shows that the trend holds on H.265 encoding as well.

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