GeForce 940M and Radeon RX 640 OEM - video card comparison

GeForce 940M

Radeon RX 640 OEM

Architecture

Maxwell (2014−2018)

GCN 4.0 (2016−2020)

GPU code name

N16S-GT-S/B

Polaris 23

Market segment

Laptop

Desktop

Release date

March 2015

April 2020

Bus support

PCI Express 3.0

-

Interface

PCIe 3.0 x8

PCIe 3.0 x8

Supplementary power connectors

-

None

Boost clock speed

1176 MHz

-

Core clock speed

1072 MHz

1295 MHz

Floating-point performance

903.2 gflops

-

Manufacturing process technology

28 nm

14 nm

Number of transistors

1,870 million

2,200 million

Pipelines / CUDA cores

384

640

Power consumption (TDP)

75 Watt

50 Watt

Texture fill rate

28.22

51.80

Memory type

DDR3

GDDR5

Maximum RAM amount

4 GB

4 GB

Memory bus width

64 Bit

128 Bit

Memory clock speed

2000 MHz

6 GB/s

Memory bandwidth

14.4 GB/s

96 GB/s

Shared memory

-

-

Display Connectors

No outputs

1x DisplayPort 1.4a, 2x mini-DisplayPort 1.4a

DirectX

12 (11_0)

12 (12_0)

CUDA

+

-

OpenCL

1.2

2.1

OpenGL

4.5

4.6

Shader Model

5.1

6.7 (6.4)

Vulkan

1.1.126

1.3

GameWorks

+

-

GPU Boost

2.0

-

Optimus

+

-