AMD Radeon HD 7950 Mac Edition vs AMD Radeon HD 8770 OEM

VS

AMD Radeon HD 7950 Mac Edition

AMD Radeon HD 8770 OEM

We compared two Desktop platform GPUs: 3GB VRAM Radeon HD 7950 Mac Edition and 1024MB VRAM Radeon HD 8770 OEM 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 1024GB)

Larger VRAM bandwidth (240.0GB/s vs 96.00GB/s)

896 additional rendering cores

AMD Radeon HD 8770 OEM 's Advantages

Released 6 months late

Lower TDP (85W vs 200W)

Score

Benchmark

FP32 (float)

Radeon HD 7950 Mac Edition +52%

2.867 TFLOPS

Radeon HD 8770 OEM

1.882 TFLOPS

Radeon HD 7950 Mac Edition

VS

Radeon HD 8770 OEM

Graphics Card

Mar 2013

Release Date

Sep 2013

Southern Islands

Generation

Sea Islands

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

1250 MHz

Memory Clock

1500 MHz

Memory

3GB

Memory Size

1024MB

GDDR5

Memory Type

GDDR5

384bit

Memory Bus

128bit

240.0GB/s

Bandwidth

96.00GB/s

Render Config

28

Compute Units

14

-

1792

Shading Units

896

112

TMUs

56

32

ROPs

16

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

768 KB

L2 Cache

256 KB

-

Theoretical Performance

25.60 GPixel/s

Pixel Rate

16.80 GPixel/s

89.60 GTexel/s

Texture Rate

58.80 GTexel/s

-

2.867 TFLOPS

FP32 (float)

1.882 TFLOPS

716.8 GFLOPS

FP64 (double)

117.6 GFLOPS

Board Design

200W

TDP

85W

550 W

Suggested PSU

250 W

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

Outputs

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

2x 6-pin

Power Connectors

1x 6-pin

Graphics Processor

Tahiti

GPU Name

Bonaire

Tahiti PRO (215-0821056)

GPU Variant

Bonaire XT (215-0839039)

GCN 1.0

Architecture

GCN 2.0

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

4.313 billion

Transistors

2.08 billion

352 mm²

Die Size

160 mm²

Graphics Features

12 (11_1)

DirectX

12 (12_0)

4.6

OpenGL

4.6

1.2

OpenCL

2.0

1.2

Vulkan

1.2

-

5.1

Shader Model

6.3

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