ARM Unveils Mali-G71: New Architecture With An Eye On VR

By 09:39 Mon, 02 Aug 2021 Comments


Here's a side of GPU to go with that recent Cortex-A73 processor. The Mali-G71 makes the transition to a recent architecture, Bifrost (the T880 it replaces and all the way to T6xx used Midgard, used as early as 2012 for the Nexus 10).

The G71 focuses on two things - Vulkan and VR. Vulkan is the recent graphics API, which aims to provide high performance on both desktops and mobiles.

For VR, the recent GPU supports the multiview API, essentially a fast, standardized way to render the scene twice - once for each eye. Since the incompatibility in what each eye sees is small, there's plenty of room for optimization.


Latency is also a huge concern, so front buffering is supported - a way to sdiscontinue graphics data to the VR headset faster than the double-buffering used for traditional displays. Double-buffering is nice since it prevents classy screen tear, but it also means the classy screen is a frame behind.

The Mali-G71 promises a 20% power reduction under the same load as the T880. It will be faster too - "40% better performance density." As with the Cortex-A73, ARM is trying to create high performance more easily accessible by making chips smaller. That's what "performance density" means - same performance can be achieved in smaller (thus cheaper) chips.

The G71 is highly scalable too. It can be configured with up to 32 shader cores (up from 16 cores for the T880), so for devices that have the power and cooling capacity, a Mali-G71 can offer tons of performance.


Devices with a G71 GPU are expected early next year and by then 4K displays will become much more common (especially in VR) so all that performance will be put to fine use.

Hit the source link for more in-depth explanation of the improvements in Mali-G71 and Bifrost.

Source


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