AMD Radeon HD 6870 1600SP Edition vs AMD Radeon HD 8670 OEM

VS

AMD Radeon HD 6870 1600SP Edition AMD Radeon HD 8670 OEM

We compared two Desktop platform GPUs: 1024MB VRAM Radeon HD 6870 1600SP 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 6870 1600SP Edition 's Advantages

Larger VRAM bandwidth (134.4GB/s vs 73.60GB/s)

1216 additional rendering cores

AMD Radeon HD 8670 OEM 's Advantages

Boost Clock1050MHz

More VRAM (2GB vs 1GB)

Lower TDP (75W vs 175W)

Score

Benchmark

FP32 (float)

Radeon HD 6870 1600SP Edition +237%

2.72 TFLOPS

Radeon HD 8670 OEM

0.806 TFLOPS

Radeon HD 6870 1600SP Edition

VS

Radeon HD 8670 OEM

Graphics Card

Jan 2013

Release Date

Jan 2013

Northern Islands

Generation

Sea Islands

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 3.0 x8

Clock Speeds

-

Base Clock

1000 MHz

-

Boost Clock

1050 MHz

Memory Clock

1150 MHz

Memory

1024MB

Memory Size

2GB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

128bit

134.4GB/s

Bandwidth

73.60GB/s

Render Config

-

SM Count

-

20

Compute Units

6

1600

Shading Units

384

80

TMUs

24

32

ROPs

8

-

Tensor Cores

-

RT Cores

-

8 KB (per CU)

L1 Cache

16 KB (per CU)

512 KB

L2 Cache

256 KB

Theoretical Performance

27.20 GPixel/s

Pixel Rate

8.400 GPixel/s

68.00 GTexel/s

Texture Rate

25.20 GTexel/s

-

FP16 (half)

-

2.720 TFLOPS

FP32 (float)

806.4 GFLOPS

544.0 GFLOPS

FP64 (double)

50.40 GFLOPS

Graphics Processor

Cypress

GPU Name

Oland

Cypress XT (215-0735033)

GPU Variant

Oland XT (215-0837000)

TeraScale 2

Architecture

GCN 1.0

TSMC

Foundry

TSMC

40 nm

Process Size

28 nm

2.154 billion

Transistors

0.95 billion

334 mm²

Die Size

77 mm²

Board Design

175W

TDP

75W

450 W

Suggested PSU

250 W

2x DVI 1x HDMI 1.3a 2x mini-DisplayPort 1.1

Outputs

1x DVI 1x HDMI 1.4a 1x VGA

2x 6-pin

Power Connectors

None

Graphics Features

11.2 (11_0)

DirectX

12 (11_1)

4.4

OpenGL

4.6

1.2

OpenCL

1.2

N/A

Vulkan

1.2

-

CUDA

-

5.0

Shader Model

5.1

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