AMD Radeon HD 6870 1600SP Edition vs AMD Radeon HD 7670 OEM

VS

AMD Radeon HD 6870 1600SP Edition

AMD Radeon HD 7670 OEM

We compared two Desktop platform GPUs: 1024MB VRAM Radeon HD 6870 1600SP 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

AMD Radeon HD 6870 1600SP Edition 's Advantages

Released 1 years late

More VRAM (1024GB vs 512GB)

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

1120 additional rendering cores

AMD Radeon HD 7670 OEM 's Advantages

Lower TDP (66W vs 175W)

Score

Benchmark

FP32 (float)

Radeon HD 6870 1600SP Edition +254%

2.72 TFLOPS

Radeon HD 7670 OEM

0.768 TFLOPS

Radeon HD 6870 1600SP Edition

VS

Radeon HD 7670 OEM

Graphics Card

Jan 2013

Release Date

Jan 2012

Northern Islands

Generation

Southern Islands

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

1050 MHz

Memory Clock

1000 MHz

Memory

1024MB

Memory Size

512MB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

128bit

134.4GB/s

Bandwidth

64.00GB/s

Render Config

20

Compute Units

6

-

1600

Shading Units

480

80

TMUs

24

32

ROPs

8

-

8 KB (per CU)

L1 Cache

8 KB (per CU)

512 KB

L2 Cache

256 KB

-

Theoretical Performance

27.20 GPixel/s

Pixel Rate

6.400 GPixel/s

68.00 GTexel/s

Texture Rate

19.20 GTexel/s

-

2.720 TFLOPS

FP32 (float)

768.0 GFLOPS

544.0 GFLOPS

FP64 (double)

-

Board Design

175W

TDP

66W

450 W

Suggested PSU

250 W

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

Outputs

1x DVI 1x DisplayPort 1.1 1x VGA

2x 6-pin

Power Connectors

None

Graphics Processor

Cypress

GPU Name

Turks

Cypress XT (215-0735033)

GPU Variant

Turks XT (215-0803000)

TeraScale 2

Architecture

TeraScale 2

TSMC

Foundry

TSMC

40 nm

Process Size

40 nm

2.154 billion

Transistors

0.716 billion

334 mm²

Die Size

118 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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