ATI Mobility Radeon HD 3870 vs ATI Mobility Radeon HD 3470

VS

ATI Mobility Radeon HD 3870

ATI Mobility Radeon HD 3470

We compared two Mobile platform GPUs: 512MB VRAM Mobility Radeon HD 3870 and 256MB VRAM Mobility Radeon HD 3470 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

ATI Mobility Radeon HD 3870 's Advantages

More VRAM (512GB vs 256GB)

Larger VRAM bandwidth (54.40GB/s vs 6.400GB/s)

280 additional rendering cores

Score

Benchmark

FP32 (float)

Mobility Radeon HD 3870 +681%

0.422 TFLOPS

Mobility Radeon HD 3470

0.054 TFLOPS

Mobility Radeon HD 3870

VS

Mobility Radeon HD 3470

Graphics Card

Jun 2008

Release Date

Jan 2008

M8x

Generation

M8x

Mobile

Type

Mobile

PCIe 2.0 x16

Bus Interface

MXM-II

Clock Speeds

-

850 MHz

Memory Clock

400 MHz

Memory

512MB

Memory Size

256MB

GDDR3

Memory Type

DDR2

256bit

Memory Bus

64bit

54.40GB/s

Bandwidth

6.400GB/s

Render Config

4

Compute Units

2

-

320

Shading Units

40

16

TMUs

4

16

ROPs

4

-

256 KB

L2 Cache

64 KB

-

Theoretical Performance

10.56 GPixel/s

Pixel Rate

2.720 GPixel/s

10.56 GTexel/s

Texture Rate

2.720 GTexel/s

-

422.4 GFLOPS

FP32 (float)

54.40 GFLOPS

84.48 GFLOPS

FP64 (double)

-

Board Design

55W

TDP

Unknown

-

No outputs

Outputs

Portable Device Dependent

-

Graphics Processor

M88

GPU Name

M82

-

GPU Variant

M82-ME XT (216-0707009)

TeraScale

Architecture

TeraScale

TSMC

Foundry

TSMC

55 nm

Process Size

55 nm

0.666 billion

Transistors

0.181 billion

192 mm²

Die Size

67 mm²

Graphics Features

10.1 (10_1)

DirectX

10.1

3.3

OpenGL

3.3

N/A

OpenCL

N/A

Vulkan

N/A

-

4.1

Shader Model

4.1

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