GeForce GTX 1080 Mobile and GeForce 840M - video card comparison
GeForce GTX 1080 Mobile
GeForce 840M
Architecture
Pascal (2016−2021)
Maxwell (2014−2018)
GPU code name
N17E-G3
N15S-GT
Market segment
Laptop
Laptop
Release date
August 2016
March 2014
Bus support
PCIe 3.0
PCI Express 2.0, PCI Express 3.0
Interface
PCIe 3.0 x16
PCIe 3.0 x8
SLI options
+
-
Boost clock speed
1733 MHz
1124 MHz
Core clock speed
1607 MHz
1029 MHz
CUDA cores
2560
-
Floating-point performance
9,068 gflops
863.2 gflops
Manufacturing process technology
16 nm
28 nm
Number of transistors
7,200 million
-
Pipelines / CUDA cores
2560
384
Power consumption (TDP)
150 Watt
33 Watt
Maximum GPU temperature
94 °C
-
Texture fill rate
283.4
17.98
Memory type
GDDR5
DDR3
Maximum RAM amount
8 GB
4 GB
Memory bus width
256 Bit
64 Bit
Memory clock speed
10 GB/s
2000 MHz
Memory bandwidth
320 GB/s
16.02 GB/s
Shared memory
-
-
Display Connectors
DP 1.42, HDMI 2.0b, DL-DVI
No outputs
Multi monitor support
+
-
G-SYNC support
+
-
DirectX
12 (12_1)
12 (11_0)
CUDA
+
+
OpenCL
1.2
1.2
OpenGL
4.5
4.5
Shader Model
6.4
5.1
Vulkan
1.2.131
1.1.126
Ansel
+
-
GameWorks
-
+
GPU Boost
3.0
2.0
Optimus
-
+
VR Ready
+
-