AMD Radeon HD 8870 OEM vs AMD Radeon RX 580 OEM

VS

AMD Radeon HD 8870 OEM AMD Radeon RX 580 OEM

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

Main Differences

AMD Radeon RX 580 OEM 's Advantages

Released 3 years and 5 months late

Boost Clock1266MHz

More VRAM (8GB vs 2GB)

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

1024 additional rendering cores

Lower TDP (150W vs 175W)

Score

Benchmark

FP32 (float)

Radeon HD 8870 OEM

2.56 TFLOPS

Radeon RX 580 OEM +127%

5.834 TFLOPS

Radeon HD 8870 OEM

VS

Radeon RX 580 OEM

Graphics Card

Jan 2013

Release Date

Jun 2016

Sea Islands

Generation

Polaris

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

Base Clock

1120 MHz

-

Boost Clock

1266 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

-

SM Count

-

20

Compute Units

36

1280

Shading Units

2304

80

TMUs

144

32

ROPs

32

-

Tensor Cores

-

RT Cores

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

512 KB

L2 Cache

2 MB

Theoretical Performance

32.00 GPixel/s

Pixel Rate

40.51 GPixel/s

80.00 GTexel/s

Texture Rate

182.3 GTexel/s

-

FP16 (half)

5.834 TFLOPS

2.560 TFLOPS

FP32 (float)

5.834 TFLOPS

160.0 GFLOPS

FP64 (double)

364.6 GFLOPS

Graphics Processor

Pitcairn

GPU Name

Ellesmere

Pitcairn XT (215-0828047)

GPU Variant

Polaris 10 XT (215-0876184)

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

Board Design

175W

TDP

150W

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 6-pin

Graphics Features

12 (11_1)

DirectX

12 (12_0)

4.6

OpenGL

4.6

1.2

OpenCL

2.1

1.2

Vulkan

1.2

-

CUDA

-

5.1

Shader Model

6.4

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