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AMD Lexa

Lexa MCM Pro
Lexa MCM Pro
Lexa PRO
Lexa PRO
Lexa XT
Lexa XT
AMD's Lexa GPU uses the GCN 4.0 architecture and is made using a 14 nm production process at TSMC. With a die size of 103 mm² and a transistor count of 2,200 million it is a small chip. Lexa supports DirectX 12.0 (Feature Level 12_0). It features 640 shading units, 40 texture mapping units and 16 ROPs.
Further reading: Polaris Architecture Whitepaper

Graphics Processor

GPU Name
Lexa
Architecture
GCN 4.0
Foundry
TSMC
Process Size
14 nm
Transistors
2,200 million
Density
21.4M / mm²
Die Size
103 mm²
Released
Apr 20th, 2017

Graphics Features

DirectX
12.0 (12_0)
OpenGL
4.6
OpenCL
2.0
Vulkan
1.1.119
Shader Model
6.4
Compute
GFX8
ROCm
Yes

Render Config

Shading Units
640
TMUs
40
ROPs
16
Compute Units
10
ACEs
4
HWSs
2
SEs
2
L1 Cache
16 KB per CU
L2 Cache
512 KB
Max. TDP
65 W

All GCN 4.0 GPUs

Graphics cards using the AMD Lexa GPU

Name Chip Memory Shaders TMUs ROPs Base Clock Boost Clock Memory Clock
AMD Radeon RX 550 Lexa PRO 2 GB 512 32 16 1100 MHz 1183 MHz 1750 MHz
AMD Radeon Pro WX 3100 Lexa XT 4 GB 512 32 16 925 MHz 1219 MHz 1500 MHz
AMD Radeon Pro WX 2100 Lexa PRO GL 2 GB 512 32 16 925 MHz 1219 MHz 1500 MHz
AMD Radeon E9171 MCM Lexa MCM Pro 4 GB 512 32 16 1124 MHz 1219 MHz 1500 MHz
AMD Radeon E9172 MXM E9170 2 GB 512 32 16 1124 MHz 1219 MHz 1500 MHz
AMD Radeon E9174 MXM E9170 4 GB 512 32 16 1124 MHz 1219 MHz 1500 MHz
AMD Radeon E9173 PCIe E9170 2 GB 512 32 16 1124 MHz 1219 MHz 1500 MHz
AMD Radeon E9175 PCIe E9170 4 GB 512 32 16 1124 MHz 1219 MHz 1500 MHz
AMD Radeon RX 540 Mobile Lexa PRO 2 GB 512 32 16 1124 MHz 1219 MHz 1500 MHz
AMD Radeon RX 550 Mobile Lexa PRO 2 GB 640 40 16 1100 MHz 1287 MHz 1500 MHz
AMD Radeon RX 550X Lexa PRO 4 GB 512 32 16 1100 MHz 1183 MHz 1500 MHz
AMD Radeon 550X 640SP Lexa PRO 4 GB 640 40 16 1019 MHz 1071 MHz 1500 MHz
AMD Radeon 550 Lexa PRO 2 GB 512 32 16 1100 MHz 1183 MHz 1750 MHz
AMD Radeon 540X Lexa PRO 2 GB 512 32 16 980 MHz 1095 MHz 1750 MHz
AMD Radeon 550X Lexa PRO 2 GB 512 32 16 1082 MHz 1218 MHz 1750 MHz
AMD Radeon 540X Lexa PRO 2 GB 512 32 16 980 MHz 1046 MHz 1750 MHz
AMD Radeon RX 540X Lexa PRO 2 GB 512 32 16 980 MHz 1124 MHz 1750 MHz
AMD Radeon 540 Lexa PRO 2 GB 512 32 16 1100 MHz 1124 MHz 1750 MHz
AMD Radeon 550X Lexa PRO 2 GB 512 32 16 1082 MHz 1218 MHz 1750 MHz

Lexa GPU Notes

Architecture Codename: Arctic Islands
Codename: Polaris 12 (Treasure)
CLRX Version: GCN 1.2
Graphics/Compute: GFX8 (gfx804)
Display Core Engine: 11.2
Unified Video Decoder: 6.3
Video Compression Engine: 3.4