Tahiti and GeForce 840A - video card comparison

Tahiti

GeForce 840A

Architecture

GCN 1.0 (2012−2020)

Maxwell (2014−2018)

GPU code name

Tahiti

GM108

Market segment

Desktop

Desktop

Release date

-

March 2014

Interface

-

PCIe 3.0 x8

Boost clock speed

-

1124 MHz

Core clock speed

-

1029 MHz

Floating-point performance

-

863.2 gflops

Manufacturing process technology

28 nm

28 nm

Number of transistors

4,313 million

-

Pipelines / CUDA cores

2048

384

Power consumption (TDP)

-

33 Watt

Texture fill rate

-

17.98

Memory type

-

DDR3

Maximum RAM amount

-

2 GB

Memory bus width

-

64 Bit

Memory clock speed

-

2002 MHz

Memory bandwidth

-

16.02 GB/s

Display Connectors

-

No outputs

DirectX

12 (11_1)

12 (11_0)

CUDA

-

5.0

OpenCL

2.1 (1.2)

1.2

OpenGL

4.6

4.6

Shader Model

6.5 (5.1)

5.1

Vulkan

1.2.170

1.1.126