AMD Polaris 21
Polaris 21
Polaris 21 XT
Fritzchens Fritz
Die Shot
Block Diagram
AMD's Polaris 21 GPU uses the GCN 4.0 architecture and is made using a 14 nm production process at GlobalFoundries. With a die size of 123 mm² and a transistor count of 3,000 million it is a small chip. Polaris 21 supports DirectX 12 (Feature Level 12_0). For GPU compute applications, OpenCL version 2.1 can be used. It features 1024 shading units, 64 texture mapping units and 16 ROPs.
Further reading:
Polaris Architecture Whitepaper 
Graphics Processor
- GPU Name
- Polaris 21
- Architecture
- GCN 4.0
- Foundry
- GlobalFoundries
- Process Size
- 14 nm
- Transistors
- 3,000 million
- Density
- 24.4M / mm²
- Die Size
- 123 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
- 1024
- TMUs
- 64
- ROPs
- 16
- Compute Units
- 16
- ACEs
- 4
- HWSs
- 2
- SEs
- 2
- L1 Cache
- 16 KB per CU
- L2 Cache
- 1024 KB
- Max. TDP
- 75 W
All GCN 4.0 GPUs
AMD GPU Architecture History
Graphics cards using the AMD Polaris 21 GPU
| Name | Chip | Memory | Shaders | TMUs | ROPs | Base Clock | Boost Clock | Memory Clock |
|---|---|---|---|---|---|---|---|---|
AMD Radeon RX 560
|
Polaris 21 XT | 4 GB | 1024 | 64 | 16 | 1175 MHz | 1275 MHz | 1750 MHz |
| AMD Radeon Pro 560 | Polaris 21 XT | 4 GB | 1024 | 64 | 16 | 907 MHz | 1270 MHz | |
| AMD Radeon Pro 555 | Polaris 21 PRO | 2 GB | 768 | 48 | 16 | 850 MHz | 1275 MHz | |
AMD Radeon RX 560D
|
Polaris 21 XL | 4 GB | 896 | 56 | 16 | 1090 MHz | 1175 MHz | 1500 MHz |
AMD Radeon RX 560 896SP
|
Polaris 21 XL | 4 GB | 896 | 56 | 16 | 1090 MHz | 1175 MHz | 1750 MHz |
AMD Radeon RX 560X
|
Polaris 21 XT | 4 GB | 1024 | 64 | 16 | 1175 MHz | 1275 MHz | 1750 MHz |
| AMD Radeon RX 560X Mobile | Polaris 21M XT | 2 GB | 1024 | 64 | 16 | 1175 MHz | 1202 MHz | 1500 MHz |
AMD Radeon RX 560DX
|
Polaris 21 XL | 4 GB | 896 | 56 | 16 | 1090 MHz | 1175 MHz | 1500 MHz |
| AMD Radeon Pro 560X | Polaris 21 XT | 4 GB | 1024 | 64 | 16 | 1004 MHz | 1470 MHz | |
| AMD Radeon Pro 555X | Polaris 21 PRO | 4 GB | 768 | 48 | 16 | 907 MHz | 1470 MHz | |
| AMD Radeon RX 560X Mobile | Polaris 21M XT | 4 GB | 1024 | 64 | 16 | 1275 MHz | 1450 MHz | |
| AMD Radeon RX 560X Mobile | Polaris 21M XT | 4 GB | 1024 | 64 | 16 | 1275 MHz | 1750 MHz |
Polaris 21 GPU Notes
| Architecture Codename: Arctic Islands Codename: Baffin CLRX Version: GCN 1.2 Graphics/Compute: GFX8 (gfx803) Display Core Engine: 11.2 Unified Video Decoder: 6.3 Video Compression Engine: 3.4 |
