GeForce GT 640M and Radeon RX 6400 - video card comparison
Passmark - benchmark score GeForce GT 640M vs Radeon RX 6400
GeForce GT 640M
946
Radeon RX 6400
7776
GeForce GT 640M
Radeon RX 6400
Architecture
Kepler (2012−2018)
RDNA 2.0 (2020−2022)
GPU code name
N13P-GS
Navi 24
Market segment
Laptop
Desktop
Release date
March 2012
January 2022
Bus support
PCI Express 2.0, PCI Express 3.0
-
Interface
PCIe 3.0 x16
PCIe 4.0 x4
Supplementary power connectors
-
None
Boost clock speed
645 MHz
2321 MHz
Core clock speed
Up to 625 MHz
-
CUDA cores
384
-
Floating-point performance
480.0 gflops
-
Manufacturing process technology
28 nm
6 nm
Number of transistors
1,270 million
5,400 million
Pipelines / CUDA cores
384
768
Power consumption (TDP)
32 Watt
53 Watt
Texture fill rate
Up to 20.0 billion/sec
111.4
Memory type
DDR3\GDDR5
GDDR6
Maximum RAM amount
2 GB
4 GB
Memory bus width
128bit
64 Bit
Memory clock speed
1800 - 4000 MHz
16 GB/s
Memory bandwidth
Up to 64.0 GB/s
128.0 GB/s
Shared memory
-
-
Display Connectors
No outputs
1x HDMI 2.1, 1x DisplayPort 1.4a
HDMI
+
+
HDCP
+
-
Maximum VGA resolution
Up to 2048x1536
-
DirectX
12 API
12 Ultimate (12_2)
CUDA
+
-
OpenCL
1.1
2.2
OpenGL
4.5
4.6
Shader Model
5.1
6.6
Vulkan
1.1.126
1.3
3D Blu-Ray
+
-
Optimus
+
-