Radeon RX 640 and GeForce MX450 25W - video card comparison
Radeon RX 640
GeForce MX450 25W
Architecture
Polaris (2016−2019)
Turing (2018−2021)
GPU code name
Polaris 12
TU117
Market segment
Laptop
Desktop
Release date
August 2019
August 2020
Interface
PCIe 3.0 x8
PCIe 4.0 x4
Supplementary power connectors
None
None
Boost clock speed
1218 MHz
930 MHz
Core clock speed
1218 MHz
-
Manufacturing process technology
14 nm
12 nm
Number of transistors
2,200 million
4,700 million
Pipelines / CUDA cores
640
896
Power consumption (TDP)
50 Watt
25 Watt
Texture fill rate
38.98
52.08
Memory type
GDDR5
GDDR6
Maximum RAM amount
4 GB
2 GB
Memory bus width
64 Bit
64 Bit
Memory clock speed
6000 MHz
10 GB/s
Memory bandwidth
112.0 GB/s
80 GB/s
Shared memory
-
-
Display Connectors
1x DVI, 1x HDMI, 1x DisplayPort
No outputs
HDMI
+
-
DirectX
12 (12_0)
12 (12_1)
CUDA
-
7.5
OpenCL
2.0
1.2
OpenGL
4.6
4.6
Shader Model
6.4
6.5
Vulkan
1.2.131
1.2
FreeSync
+
-