Quadro P400 and GeForce 840M - video card comparison
Passmark - benchmark score Quadro P400 vs GeForce 840M
Quadro P400
1690
GeForce 840M
1121
Quadro P400
GeForce 840M
Architecture
Pascal (2016−2021)
Maxwell (2014−2018)
GPU code name
GP107
N15S-GT
Market segment
Workstation
Laptop
Release date
February 2017
March 2014
Bus support
-
PCI Express 2.0, PCI Express 3.0
Interface
PCIe 3.0 x16
PCIe 3.0 x8
Supplementary power connectors
None
-
Boost clock speed
1252 MHz
1124 MHz
Core clock speed
1228 MHz
1029 MHz
Floating-point performance
679.9 gflops
863.2 gflops
Manufacturing process technology
14 nm
28 nm
Number of transistors
3,300 million
-
Pipelines / CUDA cores
256
384
Power consumption (TDP)
30 Watt
33 Watt
Texture fill rate
20.03
17.98
Memory type
GDDR5
DDR3
Maximum RAM amount
2 GB
4 GB
Memory bus width
64 Bit
64 Bit
Memory clock speed
4008 MHz
2000 MHz
Memory bandwidth
32.06 GB/s
16.02 GB/s
Shared memory
-
-
Display Connectors
3x mini-DisplayPort
No outputs
DirectX
12 (12_1)
12 (11_0)
CUDA
6.1
+
OpenCL
1.2
1.2
OpenGL
4.6
4.5
Shader Model
6.4
5.1
Vulkan
1.2.131
1.1.126
GameWorks
-
+
GPU Boost
-
2.0
Optimus
-
+