AMD Radeon HD 7950 Mac Edition vs ATI Radeon HD 2950 PRO

VS

AMD Radeon HD 7950 Mac Edition

ATI Radeon HD 2950 PRO

We compared two Desktop platform GPUs: 3GB VRAM Radeon HD 7950 Mac Edition and 256MB VRAM Radeon HD 2950 PRO 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

More VRAM (3GB vs 256GB)

Larger VRAM bandwidth (240.0GB/s vs 38.40GB/s)

1472 additional rendering cores

ATI Radeon HD 2950 PRO 's Advantages

Lower TDP (75W vs 200W)

Score

Benchmark

FP32 (float)

Radeon HD 7950 Mac Edition +646%

2.867 TFLOPS

Radeon HD 2950 PRO

0.384 TFLOPS

Radeon HD 7950 Mac Edition

VS

Radeon HD 2950 PRO

Graphics Card

Mar 2013

Release Date

Unknown

Southern Islands

Generation

Radeon R600

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

1250 MHz

Memory Clock

600 MHz

Memory

3GB

Memory Size

256MB

GDDR5

Memory Type

GDDR3

384bit

Memory Bus

256bit

240.0GB/s

Bandwidth

38.40GB/s

Render Config

28

Compute Units

4

-

1792

Shading Units

320

112

TMUs

16

32

ROPs

16

-

16 KB (per CU)

L1 Cache

-

768 KB

L2 Cache

256 KB

-

Theoretical Performance

25.60 GPixel/s

Pixel Rate

9.600 GPixel/s

89.60 GTexel/s

Texture Rate

9.600 GTexel/s

-

2.867 TFLOPS

FP32 (float)

384.0 GFLOPS

716.8 GFLOPS

FP64 (double)

76.80 GFLOPS

Board Design

200W

TDP

75W

550 W

Suggested PSU

250 W

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

Outputs

2x DVI 1x S-Video

2x 6-pin

Power Connectors

1x 6-pin

Graphics Processor

Tahiti

GPU Name

RV670

Tahiti PRO (215-0821056)

GPU Variant

RV670 PRO ES (215-0708001)

GCN 1.0

Architecture

TeraScale

TSMC

Foundry

TSMC

28 nm

Process Size

55 nm

4.313 billion

Transistors

0.666 billion

352 mm²

Die Size

192 mm²

Graphics Features

12 (11_1)

DirectX

10.1 (10_1)

4.6

OpenGL

3.3 (full) 4.0 (partial)

1.2

OpenCL

N/A

1.2

Vulkan

N/A

-

5.1

Shader Model

4.1

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