ATI Radeon HD 3870 Mac Edition vs AMD Radeon HD 7670 OEM

VS

ATI Radeon HD 3870 Mac Edition

AMD Radeon HD 7670 OEM

We compared two Desktop platform GPUs: 512MB VRAM Radeon HD 3870 Mac Edition and 512MB VRAM Radeon HD 7670 OEM to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

ATI Radeon HD 3870 Mac Edition 's Advantages

Larger VRAM bandwidth (72.06GB/s vs 64.00GB/s)

AMD Radeon HD 7670 OEM 's Advantages

Released 3 years and 7 months late

160 additional rendering cores

Lower TDP (66W vs 106W)

Score

Benchmark

FP32 (float)

Radeon HD 3870 Mac Edition

0.497 TFLOPS

Radeon HD 7670 OEM +54%

0.768 TFLOPS

Radeon HD 3870 Mac Edition

VS

Radeon HD 7670 OEM

Graphics Card

Jun 2008

Release Date

Jan 2012

Radeon R600

Generation

Southern Islands

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

1126 MHz

Memory Clock

1000 MHz

Memory

512MB

Memory Size

512MB

GDDR4

Memory Type

GDDR5

256bit

Memory Bus

128bit

72.06GB/s

Bandwidth

64.00GB/s

Render Config

4

Compute Units

6

-

320

Shading Units

480

16

TMUs

24

16

ROPs

8

-

L1 Cache

8 KB (per CU)

256 KB

L2 Cache

256 KB

-

Theoretical Performance

12.43 GPixel/s

Pixel Rate

6.400 GPixel/s

12.43 GTexel/s

Texture Rate

19.20 GTexel/s

-

497.3 GFLOPS

FP32 (float)

768.0 GFLOPS

99.46 GFLOPS

FP64 (double)

-

Board Design

106W

TDP

66W

300 W

Suggested PSU

250 W

2x DVI 1x S-Video

Outputs

1x DVI 1x DisplayPort 1.1 1x VGA

1x 6-pin

Power Connectors

None

Graphics Processor

RV670

GPU Name

Turks

RV670 XT (215-0708005)

GPU Variant

Turks XT (215-0803000)

TeraScale

Architecture

TeraScale 2

TSMC

Foundry

TSMC

55 nm

Process Size

40 nm

0.666 billion

Transistors

0.716 billion

192 mm²

Die Size

118 mm²

Graphics Features

10.1 (10_1)

DirectX

11.2 (11_0)

3.3 (full) 4.0 (partial)

OpenGL

4.4

N/A

OpenCL

1.2

N/A

Vulkan

N/A

-

4.1

Shader Model

5.0

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