AMD Radeon HD 6970M vs ATI Mobility Radeon HD 4850 Mac Edition

VS

AMD Radeon HD 6970M

ATI Mobility Radeon HD 4850 Mac Edition

We compared two Mobile platform GPUs: 1024MB VRAM Radeon HD 6970M and 512MB VRAM Mobility Radeon HD 4850 Mac Edition to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 6970M 's Advantages

Released 1 years and 5 months late

More VRAM (1024GB vs 512GB)

Larger VRAM bandwidth (115.2GB/s vs 54.40GB/s)

160 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon HD 6970M +62%

1.306 TFLOPS

Mobility Radeon HD 4850 Mac Edition

0.804 TFLOPS

Radeon HD 6970M

VS

Mobility Radeon HD 4850 Mac Edition

Graphics Card

Jan 2011

Release Date

Aug 2009

Vancouver

Generation

M9x

Mobile

Type

Mobile

MXM-B (3.0)

Bus Interface

MXM-B (3.0)

Clock Speeds

-

900 MHz

Memory Clock

850 MHz

Memory

1024MB

Memory Size

512MB

GDDR5

Memory Type

GDDR3

256bit

Memory Bus

256bit

115.2GB/s

Bandwidth

54.40GB/s

Render Config

12

Compute Units

10

-

960

Shading Units

800

48

TMUs

40

32

ROPs

16

-

8 KB (per CU)

L1 Cache

16 KB (per CU)

512 KB

L2 Cache

256 KB

-

Theoretical Performance

21.76 GPixel/s

Pixel Rate

8.048 GPixel/s

32.64 GTexel/s

Texture Rate

20.12 GTexel/s

-

1306 GFLOPS

FP32 (float)

804.8 GFLOPS

-

FP64 (double)

161.0 GFLOPS

Board Design

75W

TDP

Unknown

-

No outputs

Outputs

Portable Device Dependent

None

Power Connectors

None

Graphics Processor

Blackcomb

GPU Name

M98

Blackcomb XT (216-0811000)

GPU Variant

M98 L2 (216-0732019)

TeraScale 2

Architecture

TeraScale

TSMC

Foundry

TSMC

40 nm

Process Size

55 nm

1.7 billion

Transistors

0.956 billion

212 mm²

Die Size

256 mm²

Graphics Features

11.2 (11_0)

DirectX

10.1 (10_1)

4.4

OpenGL

3.3

1.2

OpenCL

1.1

N/A

Vulkan

N/A

-

5.0

Shader Model

4.1

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