GeForce GT 640 OEM and A2 - video card comparison

GeForce GT 640 OEM

A2

Architecture

Kepler (2012−2018)

Ampere (2020−2022)

GPU code name

GK107

GA107

Market segment

Desktop

Desktop

Release date

April 2012

November 2021

Interface

PCIe 3.0 x16

PCIe 4.0 x8

Supplementary power connectors

None

None

Boost clock speed

-

1770 MHz

Core clock speed

797 MHz

-

Floating-point performance

612.1 gflops

-

Manufacturing process technology

28 nm

8 nm

Number of transistors

1,270 million

-

Pipelines / CUDA cores

384

1280

Power consumption (TDP)

50 Watt

60 Watt

Texture fill rate

25.50

70.80

Memory type

DDR3

GDDR6

Maximum RAM amount

2 GB

16 GB

Memory bus width

128 Bit

128 Bit

Memory clock speed

1782 MHz

12.5 GB/s

Memory bandwidth

28.51 GB/s

200.1 GB/s

Display Connectors

1x DVI, 1x HDMI, 1x DisplayPort

No outputs

HDMI

+

-

DirectX

12 (11_0)

12 Ultimate (12_2)

CUDA

3.0

8.6

OpenCL

1.2

3.0

OpenGL

4.6

4.6

Shader Model

5.1

6.6

Vulkan

1.1.126

1.2