AMD Radeon HD 7670M vs ATI Mobility Radeon HD 3870

VS

AMD Radeon HD 7670M

ATI Mobility Radeon HD 3870

We compared two Mobile platform GPUs: 1024MB VRAM Radeon HD 7670M and 512MB VRAM Mobility Radeon HD 3870 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 7670M 's Advantages

Released 3 years and 8 months late

More VRAM (1024GB vs 512GB)

160 additional rendering cores

Lower TDP (20W vs 55W)

ATI Mobility Radeon HD 3870 's Advantages

Larger VRAM bandwidth (54.40GB/s vs 28.80GB/s)

Score

Benchmark

FP32 (float)

Radeon HD 7670M +36%

0.576 TFLOPS

Mobility Radeon HD 3870

0.422 TFLOPS

Radeon HD 7670M

VS

Mobility Radeon HD 3870

Graphics Card

Feb 2012

Release Date

Jun 2008

London

Generation

M8x

Mobile

Type

Mobile

PCIe 2.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

900 MHz

Memory Clock

850 MHz

Memory

1024MB

Memory Size

512MB

DDR3

Memory Type

GDDR3

128bit

Memory Bus

256bit

28.80GB/s

Bandwidth

54.40GB/s

Render Config

6

Compute Units

4

-

480

Shading Units

320

24

TMUs

16

ROPs

16

-

8 KB (per CU)

L1 Cache

-

256 KB

L2 Cache

256 KB

-

Theoretical Performance

9.600 GPixel/s

Pixel Rate

10.56 GPixel/s

14.40 GTexel/s

Texture Rate

10.56 GTexel/s

-

576.0 GFLOPS

FP32 (float)

422.4 GFLOPS

-

FP64 (double)

84.48 GFLOPS

Board Design

20W

TDP

55W

-

No outputs

Outputs

No outputs

-

Graphics Processor

Thames

GPU Name

M88

Thames XT (216-0833000)

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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