AMD Radeon HD 6770M Mac Edition vs ATI Mobility Radeon HD 3850 X2

VS

AMD Radeon HD 6770M Mac Edition

ATI Mobility Radeon HD 3850 X2

We compared two Mobile platform GPUs: 512MB VRAM Radeon HD 6770M Mac Edition and 512MB VRAM Mobility Radeon HD 3850 X2 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

Released 2 years and 7 months late

Larger VRAM bandwidth (57.60GB/s vs 48.00GB/s)

160 additional rendering cores

Lower TDP (35W vs 70W)

Score

Benchmark

FP32 (float)

Radeon HD 6770M Mac Edition +87%

0.696 TFLOPS

Mobility Radeon HD 3850 X2

0.371 TFLOPS

Radeon HD 6770M Mac Edition

VS

Mobility Radeon HD 3850 X2

Graphics Card

Jan 2011

Release Date

Jun 2008

Vancouver

Generation

M8x

Mobile

Type

Mobile

MXM-A (3.0)

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

900 MHz

Memory Clock

750 MHz

Memory

512MB

Memory Size

512MB

GDDR5

Memory Type

GDDR3

128bit

Memory Bus

256bit

57.60GB/s

Bandwidth

48.00GB/s

Render Config

6

Compute Units

4

-

480

Shading Units

320

24

TMUs

16

8

ROPs

16

-

8 KB (per CU)

L1 Cache

-

256 KB

L2 Cache

256 KB

-

Theoretical Performance

5.800 GPixel/s

Pixel Rate

9.280 GPixel/s

17.40 GTexel/s

Texture Rate

9.280 GTexel/s

-

696.0 GFLOPS

FP32 (float)

371.2 GFLOPS

-

FP64 (double)

74.24 GFLOPS

Board Design

35W

TDP

70W

-

No outputs

Outputs

No outputs

-

Graphics Processor

Whistler

GPU Name

M88

Whistler XT (216-0810001)

GPU Variant

-

TeraScale 2

Architecture

TeraScale

TSMC

Foundry

TSMC

40 nm

Process Size

55 nm

0.716 billion

Transistors

0.666 billion

104 mm²

Die Size

192 mm²

Graphics Features

11.2 (11_0)

DirectX

10.1 (10_1)

4.4

OpenGL

3.3

1.2

OpenCL

N/A

Vulkan

N/A

-

5.0

Shader Model

4.1

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