GeForce 840M and GeForce GTX 1080 11Gbps - video card comparison

GeForce 840M

GeForce GTX 1080 11Gbps

Architecture

Maxwell (2014−2018)

Pascal (2016−2021)

GPU code name

N15S-GT

GP104

Market segment

Laptop

Desktop

Release date

March 2014

April 2017

Bus support

PCI Express 2.0, PCI Express 3.0

Interface

PCIe 3.0 x8

PCIe 3.0 x16

Supplementary power connectors

1x 8-pin

Boost clock speed

1124 MHz

1733 MHz

Core clock speed

1029 MHz

1607 MHz

Floating-point performance

863.2 gflops

8,873 gflops

Manufacturing process technology

28 nm

16 nm

Number of transistors

7,200 million

Pipelines / CUDA cores

384

2560

Power consumption (TDP)

33 Watt

180 Watt

Texture fill rate

17.98

277.3

Memory type

DDR3

GDDR5X

Maximum RAM amount

4 GB

8 GB

Memory bus width

64 Bit

256 Bit

Memory clock speed

2000 MHz

11008 MHz

Memory bandwidth

16.02 GB/s

352.3 GB/s

Shared memory

Display Connectors

No outputs

1x DVI, 1x HDMI, 3x DisplayPort

HDMI

DirectX

12 (11_0)

12 (12_1)

CUDA

6.1

OpenCL

1.2

OpenGL

4.5

4.6

Shader Model

5.1

6.4

Vulkan

1.1.126

1.2.131

GameWorks

GPU Boost

2.0

Optimus