Architecture
AMD GCN 4.0 (Polaris) 14nm
Most Powerful Variant
Polaris 12/LEXA/23
Cores : TMUs : ROPs
640 : 40 : 16
Typical Memory Size
4096 MB
Typical Memory Bus
128 -bit
Polaris 12/LEXA/23 GPU
Overview
Manufacturer
AMD
Release Date
July 2nd, 2019
Graphics Processing Unit
Architecture
GCN 4.0 (Polaris)
Fabrication Process
14 nm FinFET
Die Size
101 mm2
Transistors Count
2.2B
Stream Processors
640
TMUs
40
ROPs
16
Clocks
Base Clock
1296 MHz
Memory Configuration
Memory Size
4096 MB
Memory Type
GDDR5
Memory Bus Width
128-bit
Memory Bandwidth
96.0 GB/s
Performance
Pixel Fillrate
20.7 GPixels/s
Texture Fillrate
51.8 GTexel/s
SPFP Performance
1.7 TFLOPS
Performance per W
33.2 GFLOPS/W
Performance per mm2
16.4 GFLOPS/mm2
Physical
Interface
PCI-Express 3.0 x8
Typical Thermal Design Power
50 W
API Support
DirectX
12.0
Vulkan
1.0
OpenGL
4.5
OpenCL
2.1
| Model | GPU Model | Unified Cores | Boost Clock | Memory Clock | Memory Config. | |
|---|---|---|---|---|---|---|
 | AMD Radeon Pro WX 3200 | Polaris 12/LEXA/23 | ||||
 | AMD Radeon RX 640 640SP | Polaris 23 XT | ||||
 | AMD Radeon RX 640 640SP (Mobile) | Polaris 23 XT | ||||
 | AMD Radeon RX 550X (640SP) | Lexa PRO | ||||
 | AMD Radeon RX 550 640SP | Lexa PRO | ||||
| | AMD Radeon RX 640 512SP | Polaris 23 XL | ||||
| | AMD Radeon RX 640 512SP (Mobile) | Polaris 23 XL | ||||
| | AMD Radeon 630 | Polaris 23 MXL | ||||
 | AMD Radeon Pro WX 3100 | LexaM GL Pro | ||||
| | AMD Radeon RX 550X | Lexa PRO | ||||
| | AMD Radeon 540X (Mobile) | Polaris 12/LEXA/23 | ||||
 | AMD Radeon Pro WX 2100 | Lexa XL GL | ||||
| | AMD Radeon RX 540 (Mobile) | Polaris 12/LEXA/23 | ||||
| | AMD Radeon RX 540X (Mobile) | Polaris 12/LEXA/23 | ||||
| | AMD Radeon RX 550 | Lexa PRO | ||||
| | AMD Radeon 550 | Lexa PRO |