AMD Radeon HD 7950 Mac Edition vs AMD Radeon HD 6670

VS

AMD Radeon HD 7950 Mac Edition AMD Radeon HD 6670

We compared two Desktop platform GPUs: 3GB VRAM Radeon HD 7950 Mac Edition and 1024MB VRAM Radeon HD 6670 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 1 years and 11 months late

More VRAM (3GB vs 1GB)

Larger VRAM bandwidth (240.0GB/s vs 64.00GB/s)

1312 additional rendering cores

AMD Radeon HD 6670 's Advantages

Lower TDP (66W vs 200W)

Score

Benchmark

FP32 (float)

Radeon HD 7950 Mac Edition +273%

2.867 TFLOPS

Radeon HD 6670

0.768 TFLOPS

Radeon HD 7950 Mac Edition

VS

Radeon HD 6670

Graphics Card

Mar 2013

Release Date

Apr 2011

Southern Islands

Generation

Northern Islands

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

Base Clock

-

Boost Clock

-

1250 MHz

Memory Clock

1000 MHz

Memory

3GB

Memory Size

1024MB

GDDR5

Memory Type

GDDR5

384bit

Memory Bus

128bit

240.0GB/s

Bandwidth

64.00GB/s

Render Config

-

SM Count

-

28

Compute Units

6

1792

Shading Units

480

112

TMUs

24

32

ROPs

8

-

Tensor Cores

-

RT Cores

-

16 KB (per CU)

L1 Cache

8 KB (per CU)

768 KB

L2 Cache

256 KB

Theoretical Performance

25.60 GPixel/s

Pixel Rate

6.400 GPixel/s

89.60 GTexel/s

Texture Rate

19.20 GTexel/s

-

FP16 (half)

-

2.867 TFLOPS

FP32 (float)

768.0 GFLOPS

716.8 GFLOPS

FP64 (double)

-

Graphics Processor

Tahiti

GPU Name

Turks

Tahiti PRO (215-0821056)

GPU Variant

Turks XT (215-0803000)

GCN 1.0

Architecture

TeraScale 2

TSMC

Foundry

TSMC

28 nm

Process Size

40 nm

4.313 billion

Transistors

0.716 billion

352 mm²

Die Size

118 mm²

Board Design

200W

TDP

66W

550 W

Suggested PSU

250 W

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

Outputs

1x DVI 1x HDMI 1.3a 1x VGA

2x 6-pin

Power Connectors

None

Graphics Features

12 (11_1)

DirectX

11.2 (11_0)

4.6

OpenGL

4.4

1.2

OpenCL

1.2

Vulkan

N/A

-

CUDA

-

5.1

Shader Model

5.0

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