AMD Radeon R9 M390X vs AMD Radeon RX 550 Mobile
GPU · Specs Compare
Graphics Card
Release Date
May 2015
Jul 2017
Generation
Crystal System
Mobility Radeon
Type
Mobile
Mobile
Bus Interface
PCIe 3.0 x16
PCIe 3.0 x8
Clock Speeds
Memory Clock
1250 MHz
1500 MHz
Base Clock
—
1100 MHz
Boost Clock
—
1287 MHz
Memory
Memory Size
4GB
2GB
Memory Type
GDDR5
GDDR5
Memory Bus
256bit
128bit
Bandwidth
160.0GB/s
96.00GB/s
Render Config
Compute Units
32
10
Shading Units
2048
640
TMUs
128
40
ROPs
32
16
L1 Cache
16 KB (per CU)
16 KB (per CU)
L2 Cache
512 KB
512 KB
Theoretical Performance
Pixel Rate
23.14 GPixel/s
20.59 GPixel/s
Texture Rate
92.54 GTexel/s
51.48 GTexel/s
FP16 (half)
2.961 TFLOPS
1.647 TFLOPS
FP32 (float)
2.961 TFLOPS
1.647 TFLOPS
FP64 (double)
185.1 GFLOPS
103.0 GFLOPS
Graphics Processor
GPU Name
Amethyst
Lexa
GPU Variant
Amethyst XT
Lexa PRO(215-0904018)
Architecture
GCN 3.0
GCN 4.0
Foundry
TSMC
GlobalFoundries
Process Size
28 nm
14 nm
Transistors
5 billion
2.2 billion
Die Size
366 mm²
103 mm²
Board Design
TDP
75W
50W
Outputs
No outputs
No outputs
Power Connectors
None
None
Graphics Features
DirectX
12 (12_0)
12 (12_0)
OpenGL
4.6
4.6
OpenCL
2.0
2.1
Vulkan
1.2
1.2
Shader Model
6.3
6.4
▲ Specs Compare
Data sourced from official specifications and benchmark tests.