GeForce GT 645M and Radeon HD 8470 OEM - video card comparison

GeForce GT 645M

Radeon HD 8470 OEM

Architecture

Kepler (2012−2018)

TeraScale 2 (2009−2015)

GPU code name

N13P-GS

Caicos

Market segment

Laptop

Desktop

Release date

March 2012

January 2013

Bus support

PCI Express 2.0, PCI Express 3.0

-

Interface

PCIe 3.0 x16

PCIe 2.0 x16

Supplementary power connectors

-

None

Core clock speed

Up to 710 MHz

775 MHz

CUDA cores

384

-

Floating-point performance

544.5 gflops

248.0 gflops

Manufacturing process technology

28 nm

40 nm

Number of transistors

1,270 million

370 million

Pipelines / CUDA cores

384

160

Power consumption (TDP)

32 Watt

35 Watt

Texture fill rate

22.7 billion/sec

6.200

Memory type

DDR3\GDDR5

GDDR5

Maximum RAM amount

2 GB

1 GB

Memory bus width

128bit

64 Bit

Memory clock speed

1800 MHz

3200 MHz

Memory bandwidth

Up to 64.0 GB/s

25.6 GB/s

Shared memory

-

-

Display Connectors

No outputs

1x DVI, 1x HDMI

HDMI

+

+

HDCP

+

-

Maximum VGA resolution

Up to 2048x1536

-

DirectX

12 API

11.2 (11_0)

CUDA

+

-

OpenCL

1.1

1.2

OpenGL

4.5

4.4

Shader Model

5.1

5.0

Vulkan

1.1.126

N/A

3D Blu-Ray

+

-

Optimus

+

-