AMD Radeon HD 7970 GHz Edition vs AMD Radeon HD 8670 OEM

VS

AMD Radeon HD 7970 GHz Edition AMD Radeon HD 8670 OEM

We compared two Desktop platform GPUs: 3GB VRAM Radeon HD 7970 GHz Edition and 2GB VRAM Radeon HD 8670 OEM 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

More VRAM (3GB vs 2GB)

Larger VRAM bandwidth (288.0GB/s vs 73.60GB/s)

1664 additional rendering cores

AMD Radeon HD 8670 OEM 's Advantages

Released 7 months late

Lower TDP (75W vs 300W)

Score

Benchmark

FP32 (float)

Radeon HD 7970 GHz Edition +433%

4.301 TFLOPS

Radeon HD 8670 OEM

0.806 TFLOPS

Radeon HD 7970 GHz Edition

VS

Radeon HD 8670 OEM

Graphics Card

Jun 2012

Release Date

Jan 2013

Southern Islands

Generation

Sea Islands

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 3.0 x8

Clock Speeds

1000 MHz

Base Clock

1000 MHz

1050 MHz

Boost Clock

1050 MHz

1500 MHz

Memory Clock

1150 MHz

Memory

3GB

Memory Size

2GB

GDDR5

Memory Type

GDDR5

384bit

Memory Bus

128bit

288.0GB/s

Bandwidth

73.60GB/s

Render Config

-

SM Count

-

32

Compute Units

6

2048

Shading Units

384

128

TMUs

24

32

ROPs

8

-

Tensor Cores

-

RT Cores

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

768 KB

L2 Cache

256 KB

Theoretical Performance

33.60 GPixel/s

Pixel Rate

8.400 GPixel/s

134.4 GTexel/s

Texture Rate

25.20 GTexel/s

-

FP16 (half)

-

4.301 TFLOPS

FP32 (float)

806.4 GFLOPS

1075 GFLOPS

FP64 (double)

50.40 GFLOPS

Graphics Processor

Tahiti

GPU Name

Oland

Tahiti XT2 (215-0821065)

GPU Variant

Oland XT (215-0837000)

GCN 1.0

Architecture

GCN 1.0

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

4.313 billion

Transistors

0.95 billion

352 mm²

Die Size

77 mm²

Board Design

300W

TDP

75W

700 W

Suggested PSU

250 W

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

Outputs

1x DVI 1x HDMI 1.4a 1x VGA

1x 6-pin + 1x 8-pin

Power Connectors

None

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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