GeForce 940M and GeForce 8400M GT - video card comparison
Passmark - benchmark score GeForce 940M vs GeForce 8400M GT
GeForce 940M
1156
GeForce 8400M GT
68
GeForce 940M
GeForce 8400M GT
Architecture
Maxwell (2014−2018)
Tesla (2006−2010)
GPU code name
N16S-GT-S/B
G86M
Market segment
Laptop
Laptop
Release date
March 2015
May 2007
Bus support
PCI Express 3.0
-
Interface
PCIe 3.0 x8
PCIe 1.0 x16
Boost clock speed
1176 MHz
-
Core clock speed
1072 MHz
450 MHz
Floating-point performance
903.2 gflops
28.8 gflops
Manufacturing process technology
28 nm
80 nm
Number of transistors
1,870 million
210 million
Pipelines / CUDA cores
384
16
Power consumption (TDP)
75 Watt
14 Watt
Texture fill rate
28.22
3.600
Memory type
DDR3
GDDR3 / GDDR2
Maximum RAM amount
4 GB
512 MB
Memory bus width
64 Bit
128 Bit
Memory clock speed
2000 MHz
600 MHz
Memory bandwidth
14.4 GB/s
19.2 GB/s
Shared memory
-
-
Display Connectors
No outputs
No outputs
DirectX
12 (11_0)
11.1 (10_0)
CUDA
+
1.1
OpenCL
1.2
1.1
OpenGL
4.5
3.3
Shader Model
5.1
4.0
Vulkan
1.1.126
N/A
GameWorks
+
-
GPU Boost
2.0
-
Optimus
+
-