ATI Radeon HD 4670 X2 vs AMD Radeon HD 6670

VS

ATI Radeon HD 4670 X2

AMD Radeon HD 6670

We compared two Desktop platform GPUs: 512MB VRAM Radeon HD 4670 X2 and 1024MB VRAM Radeon HD 6670 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 6670 's Advantages

Released 2 years and 7 months late

More VRAM (1024GB vs 512GB)

Larger VRAM bandwidth (64.00GB/s vs 22.40GB/s)

160 additional rendering cores

Lower TDP (66W vs 118W)

Score

Benchmark

FP32 (float)

Radeon HD 4670 X2

0.48 TFLOPS

Radeon HD 6670 +60%

0.768 TFLOPS

Radeon HD 4670 X2

VS

Radeon HD 6670

Graphics Card

Sep 2008

Release Date

Apr 2011

Radeon R700

Generation

Northern Islands

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

700 MHz

Memory Clock

1000 MHz

Memory

512MB

Memory Size

1024MB

GDDR3

Memory Type

GDDR5

128bit

Memory Bus

128bit

22.40GB/s

Bandwidth

64.00GB/s

Render Config

4

Compute Units

6

-

320

Shading Units

480

32

TMUs

24

8

ROPs

8

-

16 KB (per CU)

L1 Cache

8 KB (per CU)

128 KB

L2 Cache

256 KB

-

Theoretical Performance

6.000 GPixel/s

Pixel Rate

6.400 GPixel/s

24.00 GTexel/s

Texture Rate

19.20 GTexel/s

-

480.0 GFLOPS

FP32 (float)

768.0 GFLOPS

-

Board Design

118W

TDP

66W

300 W

Suggested PSU

250 W

4x DVI

Outputs

1x DVI 1x HDMI 1.3a 1x VGA

1x 6-pin

Power Connectors

None

Graphics Processor

RV730

GPU Name

Turks

RV730 XT (215-0719047)

GPU Variant

Turks XT (215-0803000)

TeraScale

Architecture

TeraScale 2

TSMC

Foundry

TSMC

55 nm

Process Size

40 nm

0.514 billion

Transistors

0.716 billion

146 mm²

Die Size

118 mm²

Graphics Features

10.1 (10_1)

DirectX

11.2 (11_0)

3.3

OpenGL

4.4

1.1

OpenCL

1.2

N/A

Vulkan

N/A

-

4.1

Shader Model

5.0

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