AMD Radeon HD 6970M vs ATI Mobility Radeon HD 4670 Mac Edition

VS

AMD Radeon HD 6970M

ATI Mobility Radeon HD 4670 Mac Edition

We compared two Mobile platform GPUs: 1024MB VRAM Radeon HD 6970M and 256MB VRAM Mobility Radeon HD 4670 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 4 months late

More VRAM (1024GB vs 256GB)

Larger VRAM bandwidth (115.2GB/s vs 25.28GB/s)

640 additional rendering cores

ATI Mobility Radeon HD 4670 Mac Edition 's Advantages

Lower TDP (35W vs 75W)

Score

Benchmark

FP32 (float)

Radeon HD 6970M +200%

1.306 TFLOPS

Mobility Radeon HD 4670 Mac Edition

0.435 TFLOPS

Radeon HD 6970M

VS

Mobility Radeon HD 4670 Mac Edition

Graphics Card

Jan 2011

Release Date

Sep 2009

Vancouver

Generation

M9x

Mobile

Type

Mobile

MXM-B (3.0)

Bus Interface

MXM-A (3.0)

Clock Speeds

-

900 MHz

Memory Clock

790 MHz

Memory

1024MB

Memory Size

256MB

GDDR5

Memory Type

GDDR3

256bit

Memory Bus

128bit

115.2GB/s

Bandwidth

25.28GB/s

Render Config

12

Compute Units

4

-

960

Shading Units

320

48

TMUs

32

ROPs

8

-

8 KB (per CU)

L1 Cache

16 KB (per CU)

512 KB

L2 Cache

128 KB

-

Theoretical Performance

21.76 GPixel/s

Pixel Rate

5.440 GPixel/s

32.64 GTexel/s

Texture Rate

21.76 GTexel/s

-

1306 GFLOPS

FP32 (float)

435.2 GFLOPS

-

Board Design

75W

TDP

35W

-

No outputs

Outputs

No outputs

None

Power Connectors

-

Graphics Processor

Blackcomb

GPU Name

M96

Blackcomb XT (216-0811000)

GPU Variant

M96 XT (216-0729051)

TeraScale 2

Architecture

TeraScale

TSMC

Foundry

TSMC

40 nm

Process Size

55 nm

1.7 billion

Transistors

0.514 billion

212 mm²

Die Size

146 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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