AMD Radeon HD 6670 vs AMD Radeon HD 6870 X2

VS

AMD Radeon HD 6670

AMD Radeon HD 6870 X2

We compared two Desktop platform GPUs: 1024MB VRAM Radeon HD 6670 and 1024MB VRAM Radeon HD 6870 X2 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 6670 's Advantages

Lower TDP (66W vs 300W)

AMD Radeon HD 6870 X2 's Advantages

Larger VRAM bandwidth (134.4GB/s vs 64.00GB/s)

640 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon HD 6670

0.768 TFLOPS

Radeon HD 6870 X2 +162%

2.016 TFLOPS

Radeon HD 6670

VS

Radeon HD 6870 X2

Graphics Card

Apr 2011

Release Date

Jul 2011

Northern Islands

Generation

Northern Islands

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

1000 MHz

Memory Clock

1050 MHz

Memory

1024MB

Memory Size

1024MB

GDDR5

Memory Type

GDDR5

128bit

Memory Bus

256bit

64.00GB/s

Bandwidth

134.4GB/s

Render Config

6

Compute Units

14

-

480

Shading Units

1120

24

TMUs

56

8

ROPs

32

-

8 KB (per CU)

L1 Cache

8 KB (per CU)

256 KB

L2 Cache

512 KB

-

Theoretical Performance

6.400 GPixel/s

Pixel Rate

28.80 GPixel/s

19.20 GTexel/s

Texture Rate

50.40 GTexel/s

-

768.0 GFLOPS

FP32 (float)

2.016 TFLOPS

-

Board Design

66W

TDP

300W

250 W

Suggested PSU

700 W

1x DVI 1x HDMI 1.3a 1x VGA

Outputs

2x DVI 1x HDMI 1.3a 2x mini-DisplayPort 1.1

None

Power Connectors

-

Graphics Processor

Turks

GPU Name

Barts

Turks XT (215-0803000)

GPU Variant

Barts XT (215-0798000)

TeraScale 2

Architecture

TeraScale 2

TSMC

Foundry

TSMC

40 nm

Process Size

40 nm

0.716 billion

Transistors

1.7 billion

118 mm²

Die Size

255 mm²

Graphics Features

11.2 (11_0)

DirectX

11.2 (11_0)

4.4

OpenGL

4.4

1.2

OpenCL

1.2

N/A

Vulkan

N/A

-

5.0

Shader Model

5.0

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