AMD Radeon HD 6770M Mac Edition vs ATI Mobility Radeon HD 3670

VS

AMD Radeon HD 6770M Mac Edition

ATI Mobility Radeon HD 3670

We compared two Mobile platform GPUs: 512MB VRAM Radeon HD 6770M Mac Edition and 256MB VRAM Mobility Radeon HD 3670 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 3 years late

More VRAM (512GB vs 256GB)

Larger VRAM bandwidth (57.60GB/s vs 25.60GB/s)

360 additional rendering cores

ATI Mobility Radeon HD 3670 's Advantages

Lower TDP (30W vs 35W)

Score

Benchmark

FP32 (float)

Radeon HD 6770M Mac Edition +326%

0.696 TFLOPS

Mobility Radeon HD 3670

0.163 TFLOPS

Radeon HD 6770M Mac Edition

VS

Mobility Radeon HD 3670

Graphics Card

Jan 2011

Release Date

Jan 2008

Vancouver

Generation

M8x

Mobile

Type

Mobile

MXM-A (3.0)

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

900 MHz

Memory Clock

800 MHz

Memory

512MB

Memory Size

256MB

GDDR5

Memory Type

GDDR3

128bit

Memory Bus

128bit

57.60GB/s

Bandwidth

25.60GB/s

Render Config

6

Compute Units

3

-

480

Shading Units

120

24

TMUs

8

ROPs

4

-

8 KB (per CU)

L1 Cache

-

256 KB

L2 Cache

128 KB

-

Theoretical Performance

5.800 GPixel/s

Pixel Rate

2.720 GPixel/s

17.40 GTexel/s

Texture Rate

5.440 GTexel/s

-

696.0 GFLOPS

FP32 (float)

163.2 GFLOPS

-

Board Design

35W

TDP

30W

-

No outputs

Outputs

No outputs

-

Graphics Processor

Whistler

GPU Name

M86

Whistler XT (216-0810001)

GPU Variant

-

TeraScale 2

Architecture

TeraScale

TSMC

Foundry

TSMC

40 nm

Process Size

55 nm

0.716 billion

Transistors

0.378 billion

104 mm²

Die Size

135 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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