AMD Radeon HD 6970 vs AMD Radeon HD 7870 GHz Edition

VS

AMD Radeon HD 6970 AMD Radeon HD 7870 GHz Edition

We compared two Desktop platform GPUs: 2GB VRAM Radeon HD 6970 and 2GB VRAM Radeon HD 7870 GHz Edition to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 6970 's Advantages

Larger VRAM bandwidth (176.0GB/s vs 153.6GB/s)

256 additional rendering cores

AMD Radeon HD 7870 GHz Edition 's Advantages

Released 1 years and 3 months late

Lower TDP (175W vs 250W)

Score

Benchmark

FP32 (float)

Radeon HD 6970 +5%

2.703 TFLOPS

Radeon HD 7870 GHz Edition

2.56 TFLOPS

Radeon HD 6970

VS

Radeon HD 7870 GHz Edition

Graphics Card

Dec 2010

Release Date

Mar 2012

Northern Islands

Generation

Southern Islands

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

Base Clock

-

Boost Clock

-

1375 MHz

Memory Clock

1200 MHz

Memory

2GB

Memory Size

2GB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

256bit

176.0GB/s

Bandwidth

153.6GB/s

Render Config

-

SM Count

-

24

Compute Units

20

1536

Shading Units

1280

96

TMUs

80

32

ROPs

32

-

Tensor Cores

-

RT Cores

-

8 KB (per CU)

L1 Cache

16 KB (per CU)

512 KB

L2 Cache

512 KB

Theoretical Performance

28.16 GPixel/s

Pixel Rate

32.00 GPixel/s

84.48 GTexel/s

Texture Rate

80.00 GTexel/s

-

FP16 (half)

-

2.703 TFLOPS

FP32 (float)

2.560 TFLOPS

675.8 GFLOPS

FP64 (double)

160.0 GFLOPS

Graphics Processor

Cayman

GPU Name

Pitcairn

Cayman XT (215-0807007)

GPU Variant

Pitcairn XT (215-0828047)

TeraScale 3

Architecture

GCN 1.0

TSMC

Foundry

TSMC

40 nm

Process Size

28 nm

2.64 billion

Transistors

2.8 billion

389 mm²

Die Size

212 mm²

Board Design

250W

TDP

175W

600 W

Suggested PSU

450 W

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

Outputs

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

1x 6-pin + 1x 8-pin

Power Connectors

2x 6-pin

Graphics Features

11.2 (11_0)

DirectX

12 (11_1)

4.4

OpenGL

4.6

1.2

OpenCL

1.2

N/A

Vulkan

1.2

-

CUDA

-

5.0

Shader Model

5.1

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