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Vega µarch
General Info
Arch Type	GPU
Designer	AMD
Manufacturer	GlobalFoundries
Introduction	2017
Process	14 nm
Succession
Arctic Islands Navi

Vega (also known as Graphics core next 5th generation) is a microarchitecture developed by AMD as a successor to Arctic Islands.

Codenames

Codename	Description
Raven Ridge	Mobile processors based on Zen CPUs and a Vega GPU

Process Technology

See also: 14 nm process

Vega is manufactured on Global Foundries 14 nm process.

Architecture

Preliminary Data! Information presented in this article deal with future products, data, features, and specifications that have yet to be finalized, announced, or released. Information may be incomplete and can change by final release.

Key changes from Arctic Islands

• New programmable geometry pipeline
  • Up to 2x throughput
  • Primitive shaders
  • Improved workload balancing
• Tile based rendering
• New low precision instructions
  • Half precision floating point with 2x performance
  • 8 bit integer with 4x performance
• 15% higher clock speeds
• HBM 2
  • 2x bandwidth
  • 4x memory capacity
• New memory controller
• Render back-end is now a client of the L2 cache
• The instruction buffer has been enlarged

HBM 2

Vega makes use of 2 stacks of HBM 2 (High bandwidth memory).

single stack	HBM 1	HBM 2
dies	4 + 1 4 dram die, 1 control die	2-8 + 1 2,4 or 8 dram die, 1 control die
Gb/die	2Gb	8Gb
total Gb	8Gb	16-64Gb
bus width	1024	1024
clock speed	500 MHz	945 MHz
bandwidth	128 GB/s	238 GB/s

References

• AMD 2017 Financial Analyst Day, May 16, 2017

Documents

• White Paper: Radeon’s next-generation Vega architecture

See Also

• list of microarchitectures