AMD Radeon HD 7870 GHz Edition vs AMD Radeon HD 8670 OEM

VS

AMD Radeon HD 7870 GHz Edition

AMD Radeon HD 8670 OEM

We compared two Desktop platform GPUs: 2GB VRAM Radeon HD 7870 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 7870 GHz Edition 's Advantages

Larger VRAM bandwidth (153.6GB/s vs 73.60GB/s)

896 additional rendering cores

AMD Radeon HD 8670 OEM 's Advantages

Released 10 months late

Boost Clock1050MHz

Lower TDP (75W vs 175W)

Score

Benchmark

FP32 (float)

Radeon HD 7870 GHz Edition +217%

2.56 TFLOPS

Radeon HD 8670 OEM

0.806 TFLOPS

Radeon HD 7870 GHz Edition

VS

Radeon HD 8670 OEM

Graphics Card

Mar 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

-

Base Clock

1000 MHz

-

Boost Clock

1050 MHz

1200 MHz

Memory Clock

1150 MHz

Memory

2GB

Memory Size

2GB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

128bit

153.6GB/s

Bandwidth

73.60GB/s

Render Config

20

Compute Units

6

-

1280

Shading Units

384

80

TMUs

24

32

ROPs

8

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

512 KB

L2 Cache

256 KB

-

Theoretical Performance

32.00 GPixel/s

Pixel Rate

8.400 GPixel/s

80.00 GTexel/s

Texture Rate

25.20 GTexel/s

-

2.560 TFLOPS

FP32 (float)

806.4 GFLOPS

160.0 GFLOPS

FP64 (double)

50.40 GFLOPS

Board Design

175W

TDP

75W

450 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

2x 6-pin

Power Connectors

None

Graphics Processor

Pitcairn

GPU Name

Oland

Pitcairn XT (215-0828047)

GPU Variant

Oland XT (215-0837000)

GCN 1.0

Architecture

GCN 1.0

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

2.8 billion

Transistors

0.95 billion

212 mm²

Die Size

77 mm²

Graphics Features

12 (11_1)

DirectX

12 (11_1)

4.6

OpenGL

4.6

1.2

OpenCL

1.2

Vulkan

1.2

-

5.1

Shader Model

5.1

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