Editing amd/microarchitectures/vega

{{amd title|Vega|arch}}
{{microarchitecture
|atype=GPU
|name=Vega
|designer=AMD
|manufacturer=GlobalFoundries
|introduction=2017
|process=12 nm
|predecessor=Polaris
|predecessor link=amd/microarchitectures/polaris
|successor=Navi
|successor link=amd/microarchitectures/navi
|succession=yes
}}
'''Vega''' (also known as '''Graphics core next 5th generation''') is both a [[microarchitecture]] and GPU family developed by [[AMD]] as a successor to the {{\\|GCN4}} [[microarchitecture]] and the {{\\|arctic islands}} family. 

== Codenames ==
[[File:amd ryzen radeon.svg|right|400px]]
{| class="wikitable"
|-
! Codename !! Description
|-
| {{amd|Raven Ridge|l=core}} || Mobile processors based on {{\\|Zen}} CPUs and a Vega GPU
|}

== Models ==
{| class="wikitable tc2 tc3"
|-
! colspan="3" | Vega [[IGP]] Models !! colspan="10" | Standards
|-
! rowspan="2" | Name !! rowspan="2" | Compute Units !! rowspan="2" | Shaders!! colspan="2" | [[Vulkan]] !! colspan="3" | [[Direct3D]] !! colspan="2" | [[OpenGL]] !! colspan="2" | [[OpenCL]]
|-
| Windows || Linux || Windows || Linux || [[High Level Shading Language|HLSL]] || Windows || Linux || Windows || Linux
|-
| Vega 8 || 8|| 512 || rowspan="3" colspan="2" style="text-align: center;" | '''-''' || rowspan="3" style="text-align: center;" | '''12''' || rowspan="3" style="text-align: center;" | '''N/A''' || rowspan="3" style="text-align: center;" | '''-''' || rowspan="3" style="text-align: center;" | '''4.6''' || rowspan="3" style="text-align: center;" | '''4.6''' || rowspan="3" style="text-align: center;" colspan="2" | '''2.2'''
|-
| Vega 10 || 10|| 640 
|-
| Vega 11 || 11|| 704 
|}

{| class="wikitable tc2 tc3"
|-
! colspan="3" | Vega Dedicated Models !! colspan="10" | Standards
|-
! rowspan="2" | Name !! rowspan="2" | Compute Units !! rowspan="2" | Shaders!! colspan="2" | [[Vulkan]] !! colspan="3" | [[Direct3D]] !! colspan="2" | [[OpenGL]] !! colspan="2" | [[OpenCL]]
|-
| Windows || Linux || Windows || Linux || [[High Level Shading Language|HLSL]] || Windows || Linux || Windows || Linux
|-
| Vega 56 || 56|| 3584 || rowspan="2" colspan="2" style="text-align: center;" | '''-''' || rowspan="2" style="text-align: center;" | '''-''' || rowspan="2" style="text-align: center;" | '''N/A''' || rowspan="2" style="text-align: center;" | '''-''' || rowspan="2" style="text-align: center;" | '''-''' || rowspan="2" style="text-align: center;" | '''-''' || rowspan="2" style="text-align: center;" colspan="2" | '''-'''
|-
| Vega 64 || 64|| 4096
|}

== Performance ==
The original target of the RX Vega series was to compete with Nvidia's latest Pascal architecture.
RX Vega 64 -> GTX 1080
RX Vega 56 -> GTX 1070

The performance is generally good, but when it comes to performance per watt, or PPW, Vega is outperformed by Pascal.

== Hardware Accelerated Video ==
{{zen with vega hardware accelerated video table|col=1}}

== Process Technology ==
{{see also|14 nm process}}
Vega is manufactured on [[GlobalFoundries]]' [[14 nm process]].

== Architecture ==
[[File:amd gpu roadmap.png|400px|right]]

{{future information}}

=== Key changes from {{amd|Arctic Islands|l=arch}} ===
*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]]).

{| class="wikitable"
|-
! single stack !! HBM 1 !! HBM 2
|-
| dies || 4 + 1<info>4 dram die, 1 control die</info> || 2-8 + 1<info>2,4 or 8 dram die, 1 control die</info>
|-
| 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 ==
* [[:File:vega-whitepaper.pdf|White Paper: Radeon’s next-generation Vega architecture]]

== See Also ==
* [[list of microarchitectures]]
* [[intel/microarchitectures|gen9]]
* {{amd|Raven Ridge|l=core}}
codename	Vega +
designer	AMD +
first launched	2017 +
full page name	amd/microarchitectures/vega +
instance of	microarchitecture +
manufacturer	GlobalFoundries +
microarchitecture type	GPU +
name	Vega +
process	12 nm (0.012 μm, 1.2e-5 mm) +