AMD Radeon HD 7970 GHz Edition vs AMD Radeon Sky 500

VS

AMD Radeon HD 7970 GHz Edition AMD Radeon Sky 500

We compared two Desktop platform GPUs: 3GB VRAM Radeon HD 7970 GHz Edition and 4GB VRAM Radeon Sky 500 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 7970 GHz Edition 's Advantages

Boost Clock1050MHz

Larger VRAM bandwidth (288.0GB/s vs 153.6GB/s)

768 additional rendering cores

AMD Radeon Sky 500 's Advantages

Released 9 months late

More VRAM (4GB vs 3GB)

Lower TDP (150W vs 300W)

Score

Benchmark

FP32 (float)

Radeon HD 7970 GHz Edition +76%

4.301 TFLOPS

Radeon Sky 500

2.432 TFLOPS

Radeon HD 7970 GHz Edition

VS

Radeon Sky 500

Graphics Card

Jun 2012

Release Date

Mar 2013

Southern Islands

Generation

Radeon Sky

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

1000 MHz

Base Clock

-

1050 MHz

Boost Clock

-

1500 MHz

Memory Clock

1200 MHz

Memory

3GB

Memory Size

4GB

GDDR5

Memory Type

GDDR5

384bit

Memory Bus

256bit

288.0GB/s

Bandwidth

153.6GB/s

Render Config

-

SM Count

-

32

Compute Units

20

2048

Shading Units

1280

128

TMUs

80

32

ROPs

32

-

Tensor Cores

-

RT Cores

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

768 KB

L2 Cache

512 KB

Theoretical Performance

33.60 GPixel/s

Pixel Rate

30.40 GPixel/s

134.4 GTexel/s

Texture Rate

76.00 GTexel/s

-

FP16 (half)

-

4.301 TFLOPS

FP32 (float)

2.432 TFLOPS

1075 GFLOPS

FP64 (double)

152.0 GFLOPS

Graphics Processor

Tahiti

GPU Name

Pitcairn

Tahiti XT2 (215-0821065)

GPU Variant

Pitcairn XT GL (215-0828073)

GCN 1.0

Architecture

GCN 1.0

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

4.313 billion

Transistors

2.8 billion

352 mm²

Die Size

212 mm²

Board Design

300W

TDP

150W

700 W

Suggested PSU

450 W

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

Outputs

1x DisplayPort 1.2

1x 6-pin + 1x 8-pin

Power Connectors

1x 6-pin

Graphics Features

12 (11_1)

DirectX

12 (11_1)

4.6

OpenGL

4.6

1.2

OpenCL

1.2

Vulkan

1.2

-

CUDA

-

5.1

Shader Model

5.1

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