AMD Radeon RX 580 2048SP vs AMD Radeon HD 8870 OEM

VS

AMD Radeon RX 580 2048SP

AMD Radeon HD 8870 OEM

We compared two Desktop platform GPUs: 4GB VRAM Radeon RX 580 2048SP 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 580 2048SP 's Advantages

Released 5 years and 9 months late

Boost Clock1284MHz

More VRAM (4GB vs 2GB)

Larger VRAM bandwidth (224.0GB/s vs 153.6GB/s)

768 additional rendering cores

Lower TDP (150W vs 175W)

Score

Benchmark

FP32 (float)

Radeon RX 580 2048SP +105%

5.259 TFLOPS

Radeon HD 8870 OEM

2.56 TFLOPS

Radeon RX 580 2048SP

VS

Radeon HD 8870 OEM

Graphics Card

Oct 2018

Release Date

Jan 2013

Polaris

Generation

Sea Islands

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

1168 MHz

Base Clock

-

1284 MHz

Boost Clock

-

1750 MHz

Memory Clock

1200 MHz

Memory

4GB

Memory Size

2GB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

256bit

224.0GB/s

Bandwidth

153.6GB/s

Render Config

32

Compute Units

20

-

2048

Shading Units

1280

128

TMUs

80

32

ROPs

32

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

2 MB

L2 Cache

512 KB

-

Theoretical Performance

41.09 GPixel/s

Pixel Rate

32.00 GPixel/s

164.4 GTexel/s

Texture Rate

80.00 GTexel/s

5.259 TFLOPS

FP16 (half)

-

5.259 TFLOPS

FP32 (float)

2.560 TFLOPS

328.7 GFLOPS

FP64 (double)

160.0 GFLOPS

Board Design

150W

TDP

175W

450 W

Suggested PSU

450 W

1x DVI 1x HDMI 2.0b 3x DisplayPort 1.4a

Outputs

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

1x 8-pin

Power Connectors

2x 6-pin

Graphics Processor

Polaris 20

GPU Name

Pitcairn

Polaris 20 XL (215-0910052)

GPU Variant

Pitcairn XT (215-0828047)

GCN 4.0

Architecture

GCN 1.0

GlobalFoundries

Foundry

TSMC

14 nm

Process Size

28 nm

5.7 billion

Transistors

2.8 billion

232 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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