AMD Radeon HD 6970M Mac Edition vs ATI Mobility Radeon HD 4850 X2

VS

AMD Radeon HD 6970M Mac Edition

ATI Mobility Radeon HD 4850 X2

We compared two Mobile platform GPUs: 2GB VRAM Radeon HD 6970M Mac Edition and 1024MB VRAM Mobility Radeon HD 4850 X2 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 6970M Mac Edition 's Advantages

Released 2 years and 7 months late

More VRAM (2GB vs 1024GB)

Larger VRAM bandwidth (115.2GB/s vs 89.60GB/s)

160 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon HD 6970M Mac Edition +63%

1.306 TFLOPS

Mobility Radeon HD 4850 X2

0.8 TFLOPS

Radeon HD 6970M Mac Edition

VS

Mobility Radeon HD 4850 X2

Graphics Card

Aug 2011

Release Date

Jan 2009

Vancouver

Generation

M9x

Mobile

Type

Mobile

MXM-B (3.0)

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

900 MHz

Memory Clock

700 MHz

Memory

2GB

Memory Size

1024MB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

256bit

115.2GB/s

Bandwidth

89.60GB/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

8.000 GPixel/s

32.64 GTexel/s

Texture Rate

20.00 GTexel/s

-

1306 GFLOPS

FP32 (float)

800.0 GFLOPS

-

FP64 (double)

160.0 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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