AMD Radeon HD 8870 OEM vs AMD Radeon RX 580

VS

AMD Radeon HD 8870 OEM

AMD Radeon RX 580

We compared two Desktop platform GPUs: 2GB VRAM Radeon HD 8870 OEM and 8GB VRAM Radeon RX 580 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 8870 OEM 's Advantages

Lower TDP (175W vs 185W)

AMD Radeon RX 580 's Advantages

Released 4 years and 3 months late

Boost Clock1340MHz

More VRAM (8GB vs 2GB)

Larger VRAM bandwidth (256.0GB/s vs 153.6GB/s)

1024 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon HD 8870 OEM

2.56 TFLOPS

Radeon RX 580 +141%

6.175 TFLOPS

Radeon HD 8870 OEM

VS

Radeon RX 580

Graphics Card

Jan 2013

Release Date

Apr 2017

Sea Islands

Generation

Polaris

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

Base Clock

1257 MHz

-

Boost Clock

1340 MHz

1200 MHz

Memory Clock

2000 MHz

Memory

2GB

Memory Size

8GB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

256bit

153.6GB/s

Bandwidth

256.0GB/s

Render Config

20

Compute Units

36

-

1280

Shading Units

2304

80

TMUs

144

32

ROPs

32

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

512 KB

L2 Cache

2 MB

-

Theoretical Performance

32.00 GPixel/s

Pixel Rate

42.88 GPixel/s

80.00 GTexel/s

Texture Rate

193.0 GTexel/s

-

FP16 (half)

6.175 TFLOPS

2.560 TFLOPS

FP32 (float)

6.175 TFLOPS

160.0 GFLOPS

FP64 (double)

385.9 GFLOPS

Board Design

175W

TDP

185W

450 W

Suggested PSU

450 W

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

Outputs

1x HDMI 2.0b 3x DisplayPort 1.4a

2x 6-pin

Power Connectors

1x 8-pin

Graphics Processor

Pitcairn

GPU Name

Polaris 20

Pitcairn XT (215-0828047)

GPU Variant

Polaris 20 XTX (215-0910038)

GCN 1.0

Architecture

GCN 4.0

TSMC

Foundry

GlobalFoundries

28 nm

Process Size

14 nm

2.8 billion

Transistors

5.7 billion

212 mm²

Die Size

232 mm²

Graphics Features

12 (11_1)

DirectX

12 (12_0)

4.6

OpenGL

4.6

1.2

OpenCL

2.1

1.2

Vulkan

1.2

-

5.1

Shader Model

6.4

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