Mali-G71 High Performance GPU

About Mali-G71

Arm Mali-G71 is the first GPU to implement the Bifrost architecture. Bifrost provides high-end mobile GPUs with the ability to deliver extra computational performance. This extra performance can be used to address the ever advancing complexity of modern use cases such as VR and high fidelity gaming. Bifrost enables these use cases without draining the battery or exceeding the thermal budget of the device.

The architecture enables this performance by using technologies such as claused shaders and full system coherency. In addition to numerous microarchitectural optimizations, the GPU incorporates Arm’s popular bandwidth reduction technologies such as Arm Frame Buffer Compression, Smart Composition,  ASTC, and Transaction Elimination. Based on the trend of increasing geometric complexity, Mali-G71 takes this one step further and introduces Index-Driven Position Shading to further reduce bandwidth.  

Key features

  • Full system coherency shares memory and reduces driver overhead.
  • Claused shaders reduce overhead and allow significant scope for optimization.
  • Scalable from 1-32 shader cores.

Key benefits

  • Delivers better than laptop GPU performance in premium mobile products.
  • Enables advanced content such as Virtual and Augmented Reality within mobile power constraints.
  • Enables advanced lighting, detailed effects, and complex geometry, to make every pixel better.

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Applications

Automotive

VR

Premium mobile

DTV and OTT Video

Performance tables

Feature

Value

Description
Frequency

850MHz

in 16nm (16 FinFET)
Throughput

850Mtri/s, 27.2Gpix/s

in 16nm (16 FinFET)

 

Specification

 Features  Value Description
Anti-Aliasing
 4x MSAA.
8x MSAA.
16x MSAA.

Hardware implemented Full Scene Multiple Sample Anti-Aliasing.
API Support

OpenGL® ES1.1, 1.2, 2.0, 3.0, 3.1, 3.2.
Vulkan 1.0*.
OpenCL™ 1.1, 1.2, 2.0.
DirectX® 11 FL11_1.
RenderScript.

 Full support for next-generation and legacy 2D/3D graphics applications.
Bus Interface
 AMBA®4.
ACE & ACE-LITE.
 Compatible with a wide range of bus interconnect and peripheral IP.
L2 Cache
 Configurable 128KB-2048KB.
 From 1-4 slices, each configurable from 128KB - 512KB.
Memory System
 Virtual Memory. Built-in Memory Management Unit (MMU) to support virtual memory.
Multi-Core Scaling
 1 to 32 cores.
 Optimized for high energy efficiency to address the high-end mobile and consumer device requirements.
Adaptive Scalable Texture Compression (ASTC)
 Low Dynamic Range (LDR) and High Dynamic Range (HDR).
Supports both 2D and 3D images.
 ASTC offers a number of advantages over existing texture compression schemes by improving image quality, reducing memory bandwidth and thus energy use.
Arm Frame Buffer Compression (AFBC)
 4x4 pixel block size. AFBC is a lossless image compression format that provides random access to pixel data to a 4x4 pixel block granularity. It is employed to reduce memory bandwidth both internally within the GPU and externally throughout the SoC.
Transaction Elimination
 16x16 pixel block size.
 Transaction Elimination spots the identical pixel blocks between two consecutive render targets and performs a partial update to the frame buffer with the changed pixel blocks only, which reduces memory bandwidth and thus energy.
Smart Composition
 16x16 pixel block size.
 Smart Composition extends the concept of Transaction Elimination to every stage of UI composition. Identical pixel blocks of input surfaces are not read, not processed for composition and not written to final frame buffer.

  • Development Tools for Graphics and Compute Applications

    A range of development tools to assist in the deployment of graphics applications and content on Mali GPU based systems.

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  • Mali Developer Center

    An online portal for a growing community of developers, technology partners, software vendors and content companies to create a thriving community around Mali embedded graphics IP.

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