GeForce GT 640 Rev. 2 and Radeon 540 - video card comparison

GeForce GT 640 Rev. 2

Radeon 540

Architecture

Kepler 2.0 (2013−2015)

GCN 4.0 (2016−2020)

GPU code name

GK208

Lexa

Market segment

Desktop

Release date

May 2013

April 2017

Interface

PCIe 2.0 x8

PCIe 3.0 x8

Supplementary power connectors

None

Boost clock speed

1124 MHz

Core clock speed

1046 MHz

1183 MHz

Floating-point performance

803.3 gflops

Manufacturing process technology

28 nm

14 nm

Number of transistors

915 million

2,200 million

Pipelines / CUDA cores

384

Power consumption (TDP)

49 Watt

50 Watt

Texture fill rate

33.47

28.39

Memory type

GDDR5

Maximum RAM amount

1 GB

Memory bus width

64 Bit

32 Bit

Memory clock speed

5008 MHz

6 GB/s

Memory bandwidth

40.06 GB/s

24 GB/s

Display Connectors

1x DVI, 1x HDMI, 1x VGA

2x DisplayPort 1.4a

HDMI

DirectX

12 (11_0)

12 (12_0)

CUDA

3.5

OpenCL

1.2

2.1

OpenGL

4.6

Shader Model

5.1

6.7

Vulkan

1.1.126

1.3