AMD Radeon RX 550X Mobile vs AMD Radeon RX 580X
GPU Specs Compare
Graphics Card
Release Date
Apr 2018
Apr 2018
Generation
Mobility Radeon
Polaris
Type
Mobile
Desktop
Bus Interface
PCIe 3.0 x8
PCIe 3.0 x16
Clock Speeds
Base Clock
1100 MHz
1257 MHz
Boost Clock
1176 MHz
1340 MHz
Memory Clock
1500 MHz
2000 MHz
Memory
Memory Size
2GB
8GB
Memory Type
GDDR5
GDDR5
Memory Bus
64bit
256bit
Bandwidth
48.00GB/s
256.0GB/s
Render Config
Compute Units
10
36
Shading Units
640
2304
TMUs
40
144
ROPs
16
32
L1 Cache
16 KB (per CU)
16 KB (per CU)
L2 Cache
512 KB
2 MB
Theoretical Performance
Pixel Rate
18.82 GPixel/s
42.88 GPixel/s
Texture Rate
47.04 GTexel/s
193.0 GTexel/s
FP16 (half)
1.505 TFLOPS
6.175 TFLOPS
FP32 (float)
1.505 TFLOPS
6.175 TFLOPS
FP64 (double)
94.08 GFLOPS
385.9 GFLOPS
Graphics Processor
GPU Name
Polaris 23
Polaris 20
GPU Variant
Polaris 23 MXT
Polaris 20 XTX(215-0910038)
Architecture
GCN 4.0
GCN 4.0
Foundry
GlobalFoundries
GlobalFoundries
Process Size
14 nm
14 nm
Transistors
2.2 billion
5.7 billion
Die Size
103 mm²
232 mm²
Board Design
TDP
50W
185W
Outputs
No outputs
1x HDMI 2.0b3x DisplayPort 1.4a
Power Connectors
None
1x 8-pin
Suggested PSU
-
450 W
Graphics Features
DirectX
12 (12_0)
12 (12_0)
OpenGL
4.6
4.6
OpenCL
2.1
2.1
Vulkan
1.2
1.2
Shader Model
6.4
6.4