GeForce GT 645M and Mobility Radeon HD 4850 - video card comparison

GeForce GT 645M

Mobility Radeon HD 4850

Architecture

Kepler (2012−2018)

Terascale 1 (2008−2010)

GPU code name

N13P-GS

M98

Market segment

Laptop

Release date

March 2012

January 2009

Bus support

PCI Express 2.0, PCI Express 3.0

Interface

PCIe 3.0 x16

PCIe 2.0 x16

Core clock speed

Up to 710 MHz

500 MHz

CUDA cores

384

Floating-point performance

544.5 gflops

800.0 gflops

Manufacturing process technology

28 nm

55 nm

Number of transistors

1,270 million

956 million

Pipelines / CUDA cores

384

800

Power consumption (TDP)

32 Watt

Texture fill rate

22.7 billion/sec

20.00

Memory type

DDR3\GDDR5

GDDR3

Maximum RAM amount

2 GB

1 GB

Memory bus width

128bit

256 Bit

Memory clock speed

1800 MHz

850 MHz

Memory bandwidth

Up to 64.0 GB/s

54.4 GB/s

Shared memory

Display Connectors

No outputs

HDMI

HDCP

Maximum VGA resolution

Up to 2048x1536

DirectX

12 API

10.1 (10_1)

CUDA

OpenCL

1.1

OpenGL

4.5

3.3

Shader Model

5.1

4.1

Vulkan

1.1.126

N/A

3D Blu-Ray

Optimus