AMD Radeon HD 6870 X2 vs AMD Radeon RX 560 896SP

VS

AMD Radeon HD 6870 X2

AMD Radeon RX 560 896SP

We compared two Desktop platform GPUs: 1024MB VRAM Radeon HD 6870 X2 and 4GB VRAM Radeon RX 560 896SP to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 6870 X2 's Advantages

Larger VRAM bandwidth (134.4GB/s vs 112.0GB/s)

224 additional rendering cores

AMD Radeon RX 560 896SP 's Advantages

Released 6 years late

Boost Clock1175MHz

More VRAM (4GB vs 1024GB)

Lower TDP (45W vs 300W)

Score

Benchmark

FP32 (float)

Radeon HD 6870 X2

2.016 TFLOPS

Radeon RX 560 896SP +4%

2.106 TFLOPS

Radeon HD 6870 X2

VS

Radeon RX 560 896SP

Graphics Card

Jul 2011

Release Date

Jul 2017

Northern Islands

Generation

Polaris

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 3.0 x8

Clock Speeds

-

Base Clock

1090 MHz

-

Boost Clock

1175 MHz

1050 MHz

Memory Clock

1750 MHz

Memory

1024MB

Memory Size

4GB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

128bit

134.4GB/s

Bandwidth

112.0GB/s

Render Config

14

Compute Units

14

-

1120

Shading Units

896

56

TMUs

56

32

ROPs

16

-

8 KB (per CU)

L1 Cache

16 KB (per CU)

512 KB

L2 Cache

1024 KB

-

Theoretical Performance

28.80 GPixel/s

Pixel Rate

18.80 GPixel/s

50.40 GTexel/s

Texture Rate

65.80 GTexel/s

-

FP16 (half)

2.106 TFLOPS

2.016 TFLOPS

FP32 (float)

2.106 TFLOPS

-

FP64 (double)

131.6 GFLOPS

Board Design

300W

TDP

45W

700 W

Suggested PSU

200 W

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

Outputs

1x DVI 1x HDMI 2.0b 1x DisplayPort 1.4a

-

Power Connectors

None

Graphics Processor

Barts

GPU Name

Polaris 21

Barts XT (215-0798000)

GPU Variant

Polaris 21 XL

TeraScale 2

Architecture

GCN 4.0

TSMC

Foundry

GlobalFoundries

40 nm

Process Size

14 nm

1.7 billion

Transistors

3 billion

255 mm²

Die Size

123 mm²

Graphics Features

11.2 (11_0)

DirectX

12 (12_0)

4.4

OpenGL

4.6

1.2

OpenCL

2.1

N/A

Vulkan

1.2

-

5.0

Shader Model

6.4

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