Radeon RX 550 Mobile and GeForce GT 645M - video card comparison
Radeon RX 550 Mobile
GeForce GT 645M
Architecture
Polaris (2016−2019)
Kepler (2012−2018)
GPU code name
Polaris 12
N13P-GS
Market segment
Laptop
Laptop
Release date
March 2017
March 2012
Bus support
-
PCI Express 2.0, PCI Express 3.0
Interface
PCIe 3.0 x8
PCIe 3.0 x16
Boost clock speed
1476 MHz
-
Core clock speed
1287 MHz
Up to 710 MHz
CUDA cores
-
384
Floating-point performance
1,647 gflops
544.5 gflops
Manufacturing process technology
14 nm
28 nm
Number of transistors
2,200 million
1,270 million
Pipelines / CUDA cores
640
384
Power consumption (TDP)
50 Watt
32 Watt
Texture fill rate
51.48
22.7 billion/sec
Memory type
GDDR5
DDR3\GDDR5
Maximum RAM amount
4 GB
2 GB
Memory bus width
128 Bit
128bit
Memory clock speed
6000 MHz
1800 MHz
Memory bandwidth
96 GB/s
Up to 64.0 GB/s
Shared memory
-
-
Display Connectors
No outputs
No outputs
HDMI
-
+
HDCP
-
+
Maximum VGA resolution
-
Up to 2048x1536
DirectX
12 (12_0)
12 API
CUDA
-
+
OpenCL
2.0
1.1
OpenGL
4.6
4.5
Shader Model
6.4
5.1
Vulkan
1.2.131
1.1.126
3D Blu-Ray
-
+
FreeSync
+
-
Optimus
-
+