Radeon RX 580X and Radeon RX 550X Mobile - video card comparison
Radeon RX 580X
Radeon RX 550X Mobile
Architecture
GCN 4.0 (2016−2020)
Polaris (2016−2019)
GPU code name
Polaris 20
Polaris 12
Market segment
Desktop
Laptop
Release date
April 2018
January 2019
Interface
PCIe 3.0 x16
PCIe 3.0 x8
Supplementary power connectors
1x 8-pin
-
Boost clock speed
1340 MHz
1287 MHz
Core clock speed
1257 MHz
1176 MHz
Floating-point performance
6,175 gflops
-
Manufacturing process technology
14 nm
14 nm
Number of transistors
5,700 million
2,200 million
Pipelines / CUDA cores
2304
640
Power consumption (TDP)
185 Watt
50 Watt
Texture fill rate
193.0
51.48
Memory type
GDDR5
GDDR5
Maximum RAM amount
8 GB
4 GB
Memory bus width
256 Bit
128 Bit
Memory clock speed
8000 MHz
7000 MHz
Memory bandwidth
256.0 GB/s
96 GB/s
Shared memory
-
-
Display Connectors
1x HDMI, 3x DisplayPort
No outputs
HDMI
+
-
DirectX
12 (12_0)
12 (12_0)
OpenCL
2.0
2.0
OpenGL
4.6
4.6
Shader Model
6.4
6.4
Vulkan
1.2.131
1.2.131
FreeSync
-
+