GeForce 940MX and GeForce 820M - video card comparison
Passmark - benchmark score GeForce 940MX vs GeForce 820M
GeForce 940MX
1561
GeForce 820M
511
GeForce 940MX
GeForce 820M
Architecture
Maxwell (2014−2018)
Fermi (2010−2014)
GPU code name
N16S-GTR-B/S
N15V-GM
Market segment
Laptop
Laptop
Release date
March 2016
January 2014
Bus support
PCI Express 3.0
PCI Express 2.0
Interface
PCIe 3.0 x8
PCIe 2.0 x16
Supplementary power connectors
None
-
Boost clock speed
1242 MHz
-
Core clock speed
1122 MHz
775 MHz
Floating-point performance
762.6 gflops
240.0 gflops
Manufacturing process technology
28 nm
28 nm
Number of transistors
1,870 million
585 million
Pipelines / CUDA cores
384
96
Power consumption (TDP)
23 Watt
15 Watt
Texture fill rate
23.83
10.00
Memory type
DDR3, GDDR5
DDR3
Maximum RAM amount
4 GB
2 GB
Memory bus width
64 Bit
64 Bit
Memory clock speed
4000 MHz
1800 MHz
Memory bandwidth
40.1 GB/s
14.4 GB/s
Shared memory
-
-
Display Connectors
No outputs
No outputs
DirectX
12 (11_0)
12 (11_0)
CUDA
+
+
OpenCL
1.2
1.1
OpenGL
4.5
4.5
Shader Model
5.1
5.1
Vulkan
1.1
N/A
GameWorks
+
+
GPU Boost
2.0
2.0
Optimus
+
+