AMD Radeon HD 6770M Mac Edition vs AMD Radeon HD 6550M

VS

AMD Radeon HD 6770M Mac Edition

AMD Radeon HD 6550M

We compared two Mobile platform GPUs: 512MB VRAM Radeon HD 6770M Mac Edition and 1024MB VRAM Radeon HD 6550M to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 6770M Mac Edition 's Advantages

Larger VRAM bandwidth (57.60GB/s vs 28.80GB/s)

80 additional rendering cores

AMD Radeon HD 6550M 's Advantages

More VRAM (1024GB vs 512GB)

Lower TDP (26W vs 35W)

Score

Benchmark

FP32 (float)

Radeon HD 6770M Mac Edition +45%

0.696 TFLOPS

Radeon HD 6550M

0.48 TFLOPS

Radeon HD 6770M Mac Edition

VS

Radeon HD 6550M

Graphics Card

Jan 2011

Release Date

Nov 2010

Vancouver

Generation

Vancouver

Mobile

Type

Mobile

MXM-A (3.0)

Bus Interface

MXM-II

Clock Speeds

-

900 MHz

Memory Clock

900 MHz

Memory

512MB

Memory Size

1024MB

GDDR5

Memory Type

DDR3

128bit

Memory Bus

128bit

57.60GB/s

Bandwidth

28.80GB/s

Render Config

6

Compute Units

5

-

480

Shading Units

400

24

TMUs

20

8

ROPs

8

-

8 KB (per CU)

L1 Cache

8 KB (per CU)

256 KB

L2 Cache

256 KB

-

Theoretical Performance

5.800 GPixel/s

Pixel Rate

4.800 GPixel/s

17.40 GTexel/s

Texture Rate

12.00 GTexel/s

-

696.0 GFLOPS

FP32 (float)

480.0 GFLOPS

-

Board Design

35W

TDP

26W

-

No outputs

Outputs

No outputs

-

Graphics Processor

Whistler

GPU Name

Lexington

Whistler XT (216-0810001)

GPU Variant

-

TeraScale 2

Architecture

TeraScale 2

TSMC

Foundry

TSMC

40 nm

Process Size

40 nm

0.716 billion

Transistors

2.154 billion

104 mm²

Die Size

334 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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