AMD Radeon HD 6970 vs AMD Radeon HD 7950 Mac Edition

VS

AMD Radeon HD 6970

AMD Radeon HD 7950 Mac Edition

We compared two Desktop platform GPUs: 2GB VRAM Radeon HD 6970 and 3GB VRAM Radeon HD 7950 Mac Edition to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 7950 Mac Edition 's Advantages

Released 2 years and 3 months late

More VRAM (3GB vs 2GB)

Larger VRAM bandwidth (240.0GB/s vs 176.0GB/s)

256 additional rendering cores

Lower TDP (200W vs 250W)

Score

Benchmark

FP32 (float)

Radeon HD 6970

2.703 TFLOPS

Radeon HD 7950 Mac Edition +6%

2.867 TFLOPS

Radeon HD 6970

VS

Radeon HD 7950 Mac Edition

Graphics Card

Dec 2010

Release Date

Mar 2013

Northern Islands

Generation

Southern Islands

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

1375 MHz

Memory Clock

1250 MHz

Memory

2GB

Memory Size

3GB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

384bit

176.0GB/s

Bandwidth

240.0GB/s

Render Config

24

Compute Units

28

-

1536

Shading Units

1792

96

TMUs

112

32

ROPs

32

-

8 KB (per CU)

L1 Cache

16 KB (per CU)

512 KB

L2 Cache

768 KB

-

Theoretical Performance

28.16 GPixel/s

Pixel Rate

25.60 GPixel/s

84.48 GTexel/s

Texture Rate

89.60 GTexel/s

-

2.703 TFLOPS

FP32 (float)

2.867 TFLOPS

675.8 GFLOPS

FP64 (double)

716.8 GFLOPS

Board Design

250W

TDP

200W

600 W

Suggested PSU

550 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 Processor

Cayman

GPU Name

Tahiti

Cayman XT (215-0807007)

GPU Variant

Tahiti PRO (215-0821056)

TeraScale 3

Architecture

GCN 1.0

TSMC

Foundry

TSMC

40 nm

Process Size

28 nm

2.64 billion

Transistors

4.313 billion

389 mm²

Die Size

352 mm²

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

-

5.0

Shader Model

5.1

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