Radeon HD 6730M and GeForce GT 640M LE - video card comparison

Radeon HD 6730M

GeForce GT 640M LE

Architecture

Terascale 2 (2009−2015)

Fermi / Kepler (2012)

GPU code name

Whistler-XT

N13P-LP

Market segment

Laptop

Laptop

Release date

January 2011

March 2012

Bus support

-

PCI Express 2.0, PCI Express 3.0

Interface

MXM-A (3.0)

PCIe 2.0 x16

Core clock speed

725 MHz

Up to 500 MHz

CUDA cores

-

Up to 384

Floating-point performance

696.0 gflops

384.0 gflops

Manufacturing process technology

40 nm

28 nm

Number of transistors

716 million

585 million

Pipelines / CUDA cores

480

384

Power consumption (TDP)

35 Watt

20 Watt

Texture fill rate

17.40

Up to 16.0 billion/sec

Memory type

DDR3

DDR3\DDR5

Maximum RAM amount

1 GB

2 GB

Memory bus width

128 Bit

128bit

Memory clock speed

800 MHz

1800 - 4000 MHz

Memory bandwidth

25.6 GB/s

Up to 28.8 GB/s

Shared memory

-

-

Display Connectors

No outputs

No outputs

HDMI

-

+

HDCP

-

+

Maximum VGA resolution

-

Up to 2048x1536

DirectX

11.2 (11_0)

12 API

CUDA

-

+

OpenCL

1.2

1.1

OpenGL

4.4

4.5

Shader Model

5.0

5.1

Vulkan

N/A

N/A

3D Blu-Ray

-

+

Optimus

-

+