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

VS

AMD Radeon HD 6550M

AMD Radeon HD 6770M Mac Edition

We compared two Mobile platform GPUs: 1024MB VRAM Radeon HD 6550M 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 6550M 's Advantages

More VRAM (1024GB vs 512GB)

Lower TDP (26W vs 35W)

AMD Radeon HD 6770M Mac Edition 's Advantages

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

80 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon HD 6550M

0.48 TFLOPS

Radeon HD 6770M Mac Edition +45%

0.696 TFLOPS

Radeon HD 6550M

VS

Radeon HD 6770M Mac Edition

Graphics Card

Nov 2010

Release Date

Jan 2011

Vancouver

Generation

Vancouver

Mobile

Type

Mobile

MXM-II

Bus Interface

MXM-A (3.0)

Clock Speeds

-

900 MHz

Memory Clock

900 MHz

Memory

1024MB

Memory Size

512MB

DDR3

Memory Type

GDDR5

128bit

Memory Bus

128bit

28.80GB/s

Bandwidth

57.60GB/s

Render Config

5

Compute Units

6

-

400

Shading Units

480

20

TMUs

24

8

ROPs

8

-

8 KB (per CU)

L1 Cache

8 KB (per CU)

256 KB

L2 Cache

256 KB

-

Theoretical Performance

4.800 GPixel/s

Pixel Rate

5.800 GPixel/s

12.00 GTexel/s

Texture Rate

17.40 GTexel/s

-

480.0 GFLOPS

FP32 (float)

696.0 GFLOPS

-

Board Design

26W

TDP

35W

-

No outputs

Outputs

No outputs

-

Graphics Processor

Lexington

GPU Name

Whistler

-

GPU Variant

Whistler XT (216-0810001)

TeraScale 2

Architecture

TeraScale 2

TSMC

Foundry

TSMC

40 nm

Process Size

40 nm

2.154 billion

Transistors

0.716 billion

334 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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