GeForce 840M and GeForce GTX 980MX - video card comparison
GeForce 840M
GeForce GTX 980MX
Architecture
Maxwell (2014−2018)
Maxwell 2.0 (2015−2019)
GPU code name
N15S-GT
GM204
Market segment
Laptop
Desktop
Release date
March 2014
June 2016
Bus support
PCI Express 2.0, PCI Express 3.0
-
Interface
PCIe 3.0 x8
PCIe 3.0 x16
Supplementary power connectors
-
None
Boost clock speed
1124 MHz
1178 MHz
Core clock speed
1029 MHz
1050 MHz
Floating-point performance
863.2 gflops
3,920 gflops
Manufacturing process technology
28 nm
28 nm
Number of transistors
-
5,200 million
Pipelines / CUDA cores
384
1664
Power consumption (TDP)
33 Watt
148 Watt
Texture fill rate
17.98
122.5
Memory type
DDR3
GDDR5
Maximum RAM amount
4 GB
8 GB
Memory bus width
64 Bit
256 Bit
Memory clock speed
2000 MHz
6000 MHz
Memory bandwidth
16.02 GB/s
192.0 GB/s
Shared memory
-
-
Display Connectors
No outputs
No outputs
DirectX
12 (11_0)
12 (12_1)
CUDA
+
5.2
OpenCL
1.2
1.2
OpenGL
4.5
4.6
Shader Model
5.1
6.4
Vulkan
1.1.126
1.1.126
GameWorks
+
-
GPU Boost
2.0
-
Optimus
+
-