GeForce GT 420M and Radeon RX 490M - video card comparison

GeForce GT 420M

Radeon RX 490M

Architecture

Fermi (2010−2014)

Polaris (2016−2019)

GPU code name

N11P-GE

Polaris

Market segment

Laptop

Laptop

Release date

September 2010

August 2016

Interface

PCIe 2.0 x16

-

Core clock speed

500 MHz

-

CUDA cores

96

-

Floating-point performance

192 gflops

-

Manufacturing process technology

40 nm

14 nm

Number of transistors

585 million

-

Pipelines / CUDA cores

96

-

Power consumption (TDP)

23 Watt

-

Texture fill rate

6.0 billion/sec

-

Memory type

(G)DDR3

GDDR5

Maximum RAM amount

1 GB

-

Memory bus width

128 Bit

-

Memory clock speed

800 MHz

-

Memory bandwidth

25.6 GB/s

-

Shared memory

-

-

Display Connectors

No outputs

-

DirectX

12 API

12

CUDA

+

-

OpenCL

1.1

-

OpenGL

4.5

-

Shader Model

5.1

-

Vulkan

N/A

-