AMD Radeon HD 6670A vs ATI Mobility Radeon HD 3850 X2

VS

AMD Radeon HD 6670A

ATI Mobility Radeon HD 3850 X2

We compared two Mobile platform GPUs: 1024MB VRAM Radeon HD 6670A 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 6670A 's Advantages

Released 2 years and 10 months late

More VRAM (1024GB vs 512GB)

Larger VRAM bandwidth (64.00GB/s vs 48.00GB/s)

160 additional rendering cores

Lower TDP (45W vs 70W)

Score

Benchmark

FP32 (float)

Radeon HD 6670A +55%

0.576 TFLOPS

Mobility Radeon HD 3850 X2

0.371 TFLOPS

Radeon HD 6670A

VS

Mobility Radeon HD 3850 X2

Graphics Card

Apr 2011

Release Date

Jun 2008

All-In-One

Generation

M8x

Mobile

Type

Mobile

MXM-A (3.0)

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

1000 MHz

Memory Clock

750 MHz

Memory

1024MB

Memory Size

512MB

GDDR5

Memory Type

GDDR3

128bit

Memory Bus

256bit

64.00GB/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

4.800 GPixel/s

Pixel Rate

9.280 GPixel/s

14.40 GTexel/s

Texture Rate

9.280 GTexel/s

-

576.0 GFLOPS

FP32 (float)

371.2 GFLOPS

-

FP64 (double)

74.24 GFLOPS

Board Design

45W

TDP

70W

-

No outputs

Outputs

No outputs

-

Graphics Processor

Turks

GPU Name

M88

Turks XT (215-0803000)

GPU Variant

-

TeraScale 2

Architecture

TeraScale

TSMC

Foundry

TSMC

40 nm

Process Size

55 nm

0.716 billion

Transistors

0.666 billion

118 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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