GeForce 840M and Tegra X2 GPU - video card comparison
GeForce 840M
Tegra X2 GPU
Architecture
Maxwell (2014−2018)
Pascal (2016−2021)
GPU code name
N15S-GT
GP10B
Market segment
Laptop
Desktop
Release date
March 2014
-
Bus support
PCI Express 2.0, PCI Express 3.0
-
Interface
PCIe 3.0 x8
IGP
Boost clock speed
1124 MHz
1465 MHz
Core clock speed
1029 MHz
-
Floating-point performance
863.2 gflops
-
Manufacturing process technology
28 nm
16 nm
Pipelines / CUDA cores
384
256
Power consumption (TDP)
33 Watt
15 Watt
Texture fill rate
17.98
23.44
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)
12 (12_1)
CUDA
+
-
OpenCL
1.2
-
OpenGL
4.5
4.6
Shader Model
5.1
-
Vulkan
1.1.126
-
GameWorks
+
-
GPU Boost
2.0
-
Optimus
+
-