GeForce 840M and A100 PCIe - video card comparison

GeForce 840M

A100 PCIe

Architecture

Maxwell (2014−2018)

Ampere (2020−2022)

GPU code name

N15S-GT

GA100

Market segment

Laptop

Desktop

Release date

March 2014

June 2020

Bus support

PCI Express 2.0, PCI Express 3.0

-

Interface

PCIe 3.0 x8

PCIe 4.0 x16

Supplementary power connectors

-

1x 8-pin

Boost clock speed

1124 MHz

-

Core clock speed

1029 MHz

1410 MHz

Floating-point performance

863.2 gflops

-

Manufacturing process technology

28 nm

7 nm

Number of transistors

-

54,200 million

Pipelines / CUDA cores

384

6912

Power consumption (TDP)

33 Watt

250 Watt

Texture fill rate

17.98

609.1

Memory type

DDR3

HBM2e

Maximum RAM amount

4 GB

40 GB

Memory bus width

64 Bit

5120 Bit

Memory clock speed

2000 MHz

2.4 GB/s

Memory bandwidth

16.02 GB/s

1,555 GB/s

Shared memory

-

-

Display Connectors

No outputs

No outputs

DirectX

12 (11_0)

12 Ultimate (12_2)

CUDA

+

8.0

OpenCL

1.2

2.0

OpenGL

4.5

4.6

Shader Model

5.1

6.5

Vulkan

1.1.126

1.2

GameWorks

+

-

GPU Boost

2.0

-

Optimus

+

-