GeForce GT 540M and R420 - video card comparison

GeForce GT 540M

R420

Architecture

Fermi (2010−2014)

R400 (2004−2008)

GPU code name

N12P-GS

R420

Market segment

Laptop

Desktop

Release date

January 2011

-

Interface

MXM-A (3.0)

-

Core clock speed

672 MHz

-

CUDA cores

96

-

Floating-point performance

258.05 gflops

-

Manufacturing process technology

40 nm

130 nm

Number of transistors

585 million

160 million

Pipelines / CUDA cores

96

-

Power consumption (TDP)

35 Watt

-

Texture fill rate

10.8 billion/sec

-

Memory type

DDR3

-

Maximum RAM amount

2 GB

-

Memory bus width

128 Bit

-

Memory clock speed

900 MHz

-

Memory bandwidth

28.8 GB/s

-

Shared memory

-

-

Display Connectors

No outputs

-

DirectX

12 API

9.0b (9_2)

CUDA

+

-

OpenCL

1.1

N/A

OpenGL

4.5

2.1

Shader Model

5.1

-

Vulkan

N/A

N/A

3D Blu-Ray

+

-

3D Gaming

+

-

Optimus

+

-