GeForce 940MX and GeForce 840M - video card comparison
Passmark - benchmark score GeForce 940MX vs GeForce 840M
GeForce 940MX
1561
GeForce 840M
1121
GeForce 940MX
GeForce 840M
Architecture
Maxwell (2014−2018)
Maxwell (2014−2018)
GPU code name
N16S-GTR-B/S
N15S-GT
Market segment
Laptop
Laptop
Release date
March 2016
March 2014
Bus support
PCI Express 3.0
PCI Express 2.0, PCI Express 3.0
Interface
PCIe 3.0 x8
PCIe 3.0 x8
Supplementary power connectors
None
-
Boost clock speed
1242 MHz
1124 MHz
Core clock speed
1122 MHz
1029 MHz
Floating-point performance
762.6 gflops
863.2 gflops
Manufacturing process technology
28 nm
28 nm
Number of transistors
1,870 million
-
Pipelines / CUDA cores
384
384
Power consumption (TDP)
23 Watt
33 Watt
Texture fill rate
23.83
17.98
Memory type
DDR3, GDDR5
DDR3
Maximum RAM amount
4 GB
4 GB
Memory bus width
64 Bit
64 Bit
Memory clock speed
4000 MHz
2000 MHz
Memory bandwidth
40.1 GB/s
16.02 GB/s
Shared memory
-
-
Display Connectors
No outputs
No outputs
DirectX
12 (11_0)
12 (11_0)
CUDA
+
+
OpenCL
1.2
1.2
OpenGL
4.5
4.5
Shader Model
5.1
5.1
Vulkan
1.1
1.1.126
GameWorks
+
+
GPU Boost
2.0
2.0
Optimus
+
+