GeForce 940MX and Radeon RX 550X Mobile - video card comparison
GeForce 940MX
Radeon RX 550X Mobile
Architecture
Maxwell (2014−2018)
Polaris (2016−2019)
GPU code name
N16S-GTR-B/S
Polaris 12
Market segment
Laptop
Laptop
Release date
March 2016
January 2019
Bus support
PCI Express 3.0
-
Interface
PCIe 3.0 x8
PCIe 3.0 x8
Supplementary power connectors
None
-
Boost clock speed
1242 MHz
1287 MHz
Core clock speed
1122 MHz
1176 MHz
Floating-point performance
762.6 gflops
-
Manufacturing process technology
28 nm
14 nm
Number of transistors
1,870 million
2,200 million
Pipelines / CUDA cores
384
640
Power consumption (TDP)
23 Watt
50 Watt
Texture fill rate
23.83
51.48
Memory type
DDR3, GDDR5
GDDR5
Maximum RAM amount
4 GB
4 GB
Memory bus width
64 Bit
128 Bit
Memory clock speed
4000 MHz
7000 MHz
Memory bandwidth
40.1 GB/s
96 GB/s
Shared memory
-
-
Display Connectors
No outputs
No outputs
DirectX
12 (11_0)
12 (12_0)
CUDA
+
-
OpenCL
1.2
2.0
OpenGL
4.5
4.6
Shader Model
5.1
6.4
Vulkan
1.1
1.2.131
FreeSync
-
+
GameWorks
+
-
GPU Boost
2.0
-
Optimus
+
-