Cayman and GeForce GT 640 - video card comparison

Cayman

GeForce GT 640

Architecture

TeraScale 3 (2010−2013)

Kepler (2012−2018)

GPU code name

Cayman

GK107

Market segment

Desktop

Desktop

Release date

-

June 2012

Interface

-

PCIe 3.0 x16

Supplementary power connectors

-

None

Core clock speed

-

902 MHz

Floating-point performance

-

692.7 gflops

Manufacturing process technology

40 nm

28 nm

Number of transistors

2,640 million

1,270 million

Pipelines / CUDA cores

1536

384

Power consumption (TDP)

-

65 Watt

Texture fill rate

-

28.86

Memory type

-

DDR3

Maximum RAM amount

-

2 GB

Memory bus width

-

128 Bit

Memory clock speed

-

1782 MHz

Memory bandwidth

-

28.51 GB/s

Display Connectors

-

1x DVI, 1x HDMI, 1x DisplayPort

HDMI

-

+

DirectX

11.2 (11_0)

12 (11_0)

CUDA

-

3.0

OpenCL

1.2

1.2

OpenGL

4.4

4.6

Shader Model

5.0

5.1

Vulkan

N/A

1.1.126