Mobility Radeon HD 4850 and Radeon HD 6970M Mac Edition - video card comparison

Mobility Radeon HD 4850

Radeon HD 6970M Mac Edition

Architecture

Terascale 1 (2008−2010)

TeraScale 2 (2009−2015)

GPU code name

M98

Blackcomb

Market segment

Laptop

Desktop

Release date

January 2009

August 2011

Interface

PCIe 2.0 x16

MXM-B (3.0)

Supplementary power connectors

None

Core clock speed

500 MHz

680 MHz

Floating-point performance

800.0 gflops

1,305.6 gflops

Manufacturing process technology

55 nm

40 nm

Number of transistors

956 million

1,700 million

Pipelines / CUDA cores

800

960

Power consumption (TDP)

75 Watt

Texture fill rate

20.00

32.64

Memory type

GDDR3

GDDR5

Maximum RAM amount

1 GB

2 GB

Memory bus width

256 Bit

Memory clock speed

850 MHz

3600 MHz

Memory bandwidth

54.4 GB/s

115.2 GB/s

Shared memory

Display Connectors

No outputs

DirectX

10.1 (10_1)

11.2 (11_0)

OpenCL

1.1

1.2

OpenGL

3.3

4.4

Shader Model

4.1

5.0

Vulkan

N/A