GeForce 840M and Radeon RX 6400 - video card comparison
Passmark - benchmark score GeForce 840M vs Radeon RX 6400
GeForce 840M
1121
Radeon RX 6400
7776
GeForce 840M
Radeon RX 6400
Architecture
Maxwell (2014−2018)
RDNA 2.0 (2020−2022)
GPU code name
N15S-GT
Navi 24
Market segment
Laptop
Desktop
Release date
March 2014
January 2022
Bus support
PCI Express 2.0, PCI Express 3.0
-
Interface
PCIe 3.0 x8
PCIe 4.0 x4
Supplementary power connectors
-
None
Boost clock speed
1124 MHz
2321 MHz
Core clock speed
1029 MHz
-
Floating-point performance
863.2 gflops
-
Manufacturing process technology
28 nm
6 nm
Number of transistors
-
5,400 million
Pipelines / CUDA cores
384
768
Power consumption (TDP)
33 Watt
53 Watt
Texture fill rate
17.98
111.4
Memory type
DDR3
GDDR6
Maximum RAM amount
4 GB
4 GB
Memory bus width
64 Bit
64 Bit
Memory clock speed
2000 MHz
16 GB/s
Memory bandwidth
16.02 GB/s
128.0 GB/s
Shared memory
-
-
Display Connectors
No outputs
1x HDMI 2.1, 1x DisplayPort 1.4a
HDMI
-
+
DirectX
12 (11_0)
12 Ultimate (12_2)
CUDA
+
-
OpenCL
1.2
2.2
OpenGL
4.5
4.6
Shader Model
5.1
6.6
Vulkan
1.1.126
1.3
GameWorks
+
-
GPU Boost
2.0
-
Optimus
+
-