AMD Radeon HD 6970M vs AMD Radeon HD 6770M Mac Edition

VS

AMD Radeon HD 6970M

AMD Radeon HD 6770M Mac Edition

We compared two Mobile platform GPUs: 1024MB VRAM Radeon HD 6970M and 512MB VRAM Radeon HD 6770M 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

More VRAM (1024GB vs 512GB)

Larger VRAM bandwidth (115.2GB/s vs 57.60GB/s)

480 additional rendering cores

AMD Radeon HD 6770M Mac Edition 's Advantages

Lower TDP (35W vs 75W)

Score

Benchmark

FP32 (float)

Radeon HD 6970M +87%

1.306 TFLOPS

Radeon HD 6770M Mac Edition

0.696 TFLOPS

Radeon HD 6970M

VS

Radeon HD 6770M Mac Edition

Graphics Card

Jan 2011

Release Date

Jan 2011

Vancouver

Generation

Vancouver

Mobile

Type

Mobile

MXM-B (3.0)

Bus Interface

MXM-A (3.0)

Clock Speeds

-

900 MHz

Memory Clock

900 MHz

Memory

1024MB

Memory Size

512MB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

128bit

115.2GB/s

Bandwidth

57.60GB/s

Render Config

12

Compute Units

6

-

960

Shading Units

480

48

TMUs

24

32

ROPs

8

-

8 KB (per CU)

L1 Cache

8 KB (per CU)

512 KB

L2 Cache

256 KB

-

Theoretical Performance

21.76 GPixel/s

Pixel Rate

5.800 GPixel/s

32.64 GTexel/s

Texture Rate

17.40 GTexel/s

-

1306 GFLOPS

FP32 (float)

696.0 GFLOPS

-

Board Design

75W

TDP

35W

-

No outputs

Outputs

No outputs

None

Power Connectors

-

Graphics Processor

Blackcomb

GPU Name

Whistler

Blackcomb XT (216-0811000)

GPU Variant

Whistler XT (216-0810001)

TeraScale 2

Architecture

TeraScale 2

TSMC

Foundry

TSMC

40 nm

Process Size

40 nm

1.7 billion

Transistors

0.716 billion

212 mm²

Die Size

104 mm²

Graphics Features

11.2 (11_0)

DirectX

11.2 (11_0)

4.4

OpenGL

4.4

1.2

OpenCL

1.2

N/A

Vulkan

N/A

-

5.0

Shader Model

5.0

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