Radeon RX 640 and T400 Mobile - video card comparison

Radeon RX 640

T400 Mobile

Architecture

Polaris (2016−2019)

Turing (2018−2021)

GPU code name

Polaris 12

TU117

Market segment

Laptop

Laptop

Release date

August 2019

-

Interface

PCIe 3.0 x8

PCIe 3.0 x16

Supplementary power connectors

None

-

Boost clock speed

1218 MHz

1425 MHz

Core clock speed

1218 MHz

-

Manufacturing process technology

14 nm

12 nm

Number of transistors

2,200 million

4,700 million

Pipelines / CUDA cores

640

896

Power consumption (TDP)

50 Watt

18 Watt

Texture fill rate

38.98

79.80

Memory type

GDDR5

GDDR6

Maximum RAM amount

4 GB

2 GB

Memory bus width

64 Bit

64 Bit

Memory clock speed

6000 MHz

10 GB/s

Memory bandwidth

112.0 GB/s

80 GB/s

Shared memory

-

-

Display Connectors

1x DVI, 1x HDMI, 1x DisplayPort

No outputs

HDMI

+

-

DirectX

12 (12_0)

12 (12_1)

CUDA

-

7.5

OpenCL

2.0

3.0

OpenGL

4.6

4.6

Shader Model

6.4

6.6

Vulkan

1.2.131

1.2

FreeSync

+

-