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AMD Polaris 20

Polaris 20

Polaris 20 XTR

Fritzchens Fritz

Die Shot

Block Diagram

AMD's Polaris 20 GPU uses the GCN 4.0 architecture and is made using a 14 nm production process at GlobalFoundries. With a die size of 232 mm² and a transistor count of 5,700 million it is a medium-sized chip. Polaris 20 supports DirectX 12 (Feature Level 12_0). For GPU compute applications, OpenCL version 2.1 can be used. It features 2304 shading units, 144 texture mapping units and 32 ROPs.

Further reading: Polaris Architecture Whitepaper

Graphics Processor

GPU Name: Polaris 20

Architecture: GCN 4.0

Foundry: GlobalFoundries

Process Size: 14 nm

Transistors: 5,700 million

Density: 24.6M / mm²

Die Size: 232 mm²

Released: Apr 18th, 2017

Graphics Features

DirectX: 12 (12_0)

OpenGL: 4.6

OpenCL: 2.1

Vulkan: 1.2

Shader Model: 6.4

Compute: GFX8

ROCm: Yes

Render Config

Shading Units: 2304

TMUs: 144

ROPs: 32

Compute Units: 36

ACEs: 4

HWSs: 2

SEs: 4

L1 Cache: 16 KB per CU

L2 Cache: 2048 KB

Max. TDP: 185 W

All GCN 4.0 GPUs

AMD GPU Architecture History

2005-2007 R500
2005-2013 TeraScale
2009-2015 TeraScale 2
2010-2013 TeraScale 3
2011-2020 GCN 1.0
2013-2017 GCN 2.0
2014-2019 GCN 3.0
2016-2020 GCN 4.0
2017-2020 GCN 5.0
2018-2021 GCN 5.1
2019-2020 RDNA 1.0
2020-2021 RDNA 2.0
2020-2020 CDNA 1.0

Graphics cards using the AMD Polaris 20 GPU

Name	Chip	Memory	Shaders	TMUs	ROPs	Base Clock	Boost Clock	Memory Clock
AMD Radeon RX 580	Polaris 20 XTX	8 GB	2304	144	32	1257 MHz	1340 MHz	2000 MHz
AMD Radeon RX 570	Polaris 20 XL	4 GB	2048	128	32	1168 MHz	1244 MHz	1750 MHz
AMD Radeon Pro 575	Polaris 20 XL	4 GB	2048	128	32	1096 MHz		1695 MHz
AMD Radeon Pro 570	Polaris 20	4 GB	1792	112	32	1000 MHz	1105 MHz	1695 MHz
AMD Radeon RX 580 Mobile	Polaris 20M XT	8 GB	2304	144	32	1000 MHz	1077 MHz	2000 MHz
AMD Radeon RX 580X	Polaris 20 XTX	8 GB	2304	144	32	1257 MHz	1340 MHz	2000 MHz
AMD Radeon RX 570X	Polaris 20 XL	8 GB	2048	128	32	1168 MHz	1244 MHz	1750 MHz
AMD Radeon RX 580X Mobile	Polaris 20M XT	8 GB	2304	144	32	1000 MHz	1077 MHz	2000 MHz
AMD Radeon RX 580 2048SP	Polaris 20 XL	4 GB	2048	128	32	1168 MHz	1284 MHz	1750 MHz
AMD Radeon RX 580G	Polaris 20 XTX	8 GB	2304	144	32	1257 MHz	1330 MHz	2000 MHz
AMD Radeon Pro 570X	Polaris 20	4 GB	1792	112	32	1000 MHz	1105 MHz	1700 MHz
AMD Radeon Pro 575X	Polaris 20 XL	4 GB	2048	128	32	1096 MHz		1700 MHz
AMD Radeon RX 590 GME	Polaris 20 XTR	8 GB	2304	144	32	1257 MHz	1380 MHz	2000 MHz

Polaris 20 GPU Notes

Architecture Codename: Arctic Islands
Codename: Ellesmere
CLRX Version: GCN 1.2
Graphics/Compute: GFX8 (gfx803)
Display Core Engine: 11.2
Unified Video Decoder: 6.3
Video Compression Engine: 3.4