AMD Radeon HD 6870 1600SP Edition vs AMD Radeon HD 6970

VS

AMD Radeon HD 6870 1600SP Edition

AMD Radeon HD 6970

We compared two Desktop platform GPUs: 1024MB VRAM Radeon HD 6870 1600SP Edition and 2GB VRAM Radeon HD 6970 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 2 years and 1 months late

64 additional rendering cores

Lower TDP (175W vs 250W)

AMD Radeon HD 6970 's Advantages

More VRAM (2GB vs 1024GB)

Larger VRAM bandwidth (176.0GB/s vs 134.4GB/s)

Score

Benchmark

FP32 (float)

Radeon HD 6870 1600SP Edition

2.72 TFLOPS

Radeon HD 6970

2.703 TFLOPS

Radeon HD 6870 1600SP Edition

VS

Radeon HD 6970

Graphics Card

Jan 2013

Release Date

Dec 2010

Northern Islands

Generation

Northern Islands

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

1050 MHz

Memory Clock

1375 MHz

Memory

1024MB

Memory Size

2GB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

256bit

134.4GB/s

Bandwidth

176.0GB/s

Render Config

20

Compute Units

24

-

1600

Shading Units

1536

80

TMUs

96

32

ROPs

32

-

8 KB (per CU)

L1 Cache

8 KB (per CU)

512 KB

L2 Cache

512 KB

-

Theoretical Performance

27.20 GPixel/s

Pixel Rate

28.16 GPixel/s

68.00 GTexel/s

Texture Rate

84.48 GTexel/s

-

2.720 TFLOPS

FP32 (float)

2.703 TFLOPS

544.0 GFLOPS

FP64 (double)

675.8 GFLOPS

Board Design

175W

TDP

250W

450 W

Suggested PSU

600 W

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

Outputs

2x DVI 1x HDMI 1.4a 2x mini-DisplayPort 1.2

2x 6-pin

Power Connectors

1x 6-pin + 1x 8-pin

Graphics Processor

Cypress

GPU Name

Cayman

Cypress XT (215-0735033)

GPU Variant

Cayman XT (215-0807007)

TeraScale 2

Architecture

TeraScale 3

TSMC

Foundry

TSMC

40 nm

Process Size

40 nm

2.154 billion

Transistors

2.64 billion

334 mm²

Die Size

389 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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