GeForce 840M and GeForce 9400M - video card comparison
Passmark - benchmark score GeForce 840M vs GeForce 9400M
GeForce 840M
1121
GeForce 9400M
104
GeForce 840M
GeForce 9400M
Architecture
Maxwell (2014−2018)
Tesla (2006−2010)
GPU code name
N15S-GT
C79
Market segment
Laptop
Desktop
Release date
March 2014
October 2008
Bus support
PCI Express 2.0, PCI Express 3.0
-
Interface
PCIe 3.0 x8
PCIe 2.0 x16
Boost clock speed
1124 MHz
-
Core clock speed
1029 MHz
580 MHz
Floating-point performance
863.2 gflops
-
Manufacturing process technology
28 nm
65 nm
Number of transistors
-
314 million
Pipelines / CUDA cores
384
16
Power consumption (TDP)
33 Watt
12 Watt
Texture fill rate
17.98
4.640
Memory type
DDR3
System Shared
Maximum RAM amount
4 GB
System Shared
Memory bus width
64 Bit
System Shared
Memory clock speed
2000 MHz
System Shared
Memory bandwidth
16.02 GB/s
-
Shared memory
-
-
Display Connectors
No outputs
No outputs
DirectX
12 (11_0)
11.1 (10_0)
CUDA
+
-
OpenCL
1.2
N/A
OpenGL
4.5
3.3
Shader Model
5.1
4.0
Vulkan
1.1.126
N/A
GameWorks
+
-
GPU Boost
2.0
-
Optimus
+
-