The developer of CapFrameX, a well-known seize, and evaluation software, has revealed a efficiency comparability (opens in new tab) of AMD’s Radeon RX 6800 XT (RDNA 2), Intel’s Arc A770 (Alchemist), and Nvidia’s GeForce RTX 3090 (Ampere) and GeForce RTX 4090 (Ada Lovelace) in AV1 video encoding in at 8K decision. The outcomes he obtained are fairly shocking.
The finest graphics playing cards, like Nvidia’s GeForce RTX 3090 or RTX 4090, provide formidable efficiency in demanding video games in excessive resolutions, in contrast to Intel’s Arc A770, which targets mainstream avid gamers. However in the case of high-resolution video playback, every part comes all the way down to video decoding {hardware} carried out by a special-purpose {hardware} unit whose efficiency doesn’t rely upon the general capabilities of the GPU.
To check the decoding capabilities of recent graphics processors, the developer of CapFrameX took Japan in 8K 60 FPS (opens in new tab) video from YouTube and decoded it in 4K and 8K resolutions in Chrome browser. Ideally, all GPUs would wish to ship fixed 60 FPS; these drops in 0.2% – 1% of circumstances shouldn’t spoil the expertise.
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In 8K, Intel’s Arc A770 delivers easy playback with 60 FPS on common and drops to 44 FPS in 0.2% of circumstances. Against this, Nvidia’s GPUs hit 56.8 – 57.6 FPS and fell to 16.7 FPS at instances, making it uncomfortable to look at. Given how shut the outcomes of Nvidia’s AD102 and GA102 are, we are able to solely ponder whether Nvidia’s present driver and Google Chrome can benefit from Nvidia’s newest NVDEC {hardware} (and whether or not Nvidia up to date the {hardware} when in comparison with GA102). With AMD’s Radeon RX 6800 XT, the 8K video was ‘unwatchable’ because it suffered from low body charges and stuttering.
Typically, Intel presents industry-leading video playback assist even at 8K. Against this, Nvidia’s software program could must meet up with Intel’s relating to high-resolution AV1 video playback. Whereas AMD’s Navi 21 formally helps AV1 decoding, it doesn’t seem like an 8K decision and is a nut that it might probably crack, not less than with present software program.