AMD Radeon RX 560X vs AMD Radeon HD 8870 OEM

VS

AMD Radeon RX 560X

AMD Radeon HD 8870 OEM

We compared two Desktop platform GPUs: 4GB VRAM Radeon RX 560X and 2GB VRAM Radeon HD 8870 OEM to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon RX 560X 's Advantages

Released 5 years and 3 months late

Boost Clock1275MHz

More VRAM (4GB vs 2GB)

Lower TDP (75W vs 175W)

AMD Radeon HD 8870 OEM 's Advantages

Larger VRAM bandwidth (153.6GB/s vs 112.0GB/s)

256 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon RX 560X +1%

2.611 TFLOPS

Radeon HD 8870 OEM

2.56 TFLOPS

Radeon RX 560X

VS

Radeon HD 8870 OEM

Graphics Card

Apr 2018

Release Date

Jan 2013

Polaris

Generation

Sea Islands

Desktop

Type

Desktop

PCIe 3.0 x8

Bus Interface

PCIe 3.0 x16

Clock Speeds

1175 MHz

Base Clock

-

1275 MHz

Boost Clock

-

1750 MHz

Memory Clock

1200 MHz

Memory

4GB

Memory Size

2GB

GDDR5

Memory Type

GDDR5

128bit

Memory Bus

256bit

112.0GB/s

Bandwidth

153.6GB/s

Render Config

16

Compute Units

20

-

1024

Shading Units

1280

64

TMUs

80

16

ROPs

32

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

1024 KB

L2 Cache

512 KB

-

Theoretical Performance

20.40 GPixel/s

Pixel Rate

32.00 GPixel/s

81.60 GTexel/s

Texture Rate

80.00 GTexel/s

2.611 TFLOPS

FP16 (half)

-

2.611 TFLOPS

FP32 (float)

2.560 TFLOPS

163.2 GFLOPS

FP64 (double)

160.0 GFLOPS

Board Design

75W

TDP

175W

250 W

Suggested PSU

450 W

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

Outputs

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

None

Power Connectors

2x 6-pin

Graphics Processor

Polaris 21

GPU Name

Pitcairn

Polaris 21 XT (215-0908004)

GPU Variant

Pitcairn XT (215-0828047)

GCN 4.0

Architecture

GCN 1.0

GlobalFoundries

Foundry

TSMC

14 nm

Process Size

28 nm

3 billion

Transistors

2.8 billion

123 mm²

Die Size

212 mm²

Graphics Features

12 (12_0)

DirectX

12 (11_1)

4.6

OpenGL

4.6

2.1

OpenCL

1.2

Vulkan

1.2

-

6.4

Shader Model

5.1

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