GeForce 940M and GeForce 840A - video card comparison
Passmark - benchmark score GeForce 940M vs GeForce 840A
GeForce 940M
1156
GeForce 840A
1214
GeForce 940M
GeForce 840A
Architecture
Maxwell (2014−2018)
Maxwell (2014−2018)
GPU code name
N16S-GT-S/B
GM108
Market segment
Laptop
Desktop
Release date
March 2015
March 2014
Bus support
PCI Express 3.0
-
Interface
PCIe 3.0 x8
PCIe 3.0 x8
Boost clock speed
1176 MHz
1124 MHz
Core clock speed
1072 MHz
1029 MHz
Floating-point performance
903.2 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)
75 Watt
33 Watt
Texture fill rate
28.22
17.98
Memory type
DDR3
DDR3
Maximum RAM amount
4 GB
2 GB
Memory bus width
64 Bit
64 Bit
Memory clock speed
2000 MHz
2002 MHz
Memory bandwidth
14.4 GB/s
16.02 GB/s
Shared memory
-
-
Display Connectors
No outputs
No outputs
DirectX
12 (11_0)
12 (11_0)
CUDA
+
5.0
OpenCL
1.2
1.2
OpenGL
4.5
4.6
Shader Model
5.1
5.1
Vulkan
1.1.126
1.1.126
GameWorks
+
-
GPU Boost
2.0
-
Optimus
+
-