AMD Radeon RX 580X Mobile vs AMD Radeon R9 M390 Mac Edition

VS

AMD Radeon RX 580X Mobile

AMD Radeon R9 M390 Mac Edition

We compared two Mobile platform GPUs: 8GB VRAM Radeon RX 580X Mobile and 2GB VRAM Radeon R9 M390 Mac Edition to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon RX 580X Mobile 's Advantages

Released 2 years and 11 months late

Boost Clock1077MHz

More VRAM (8GB vs 2GB)

Larger VRAM bandwidth (256.0GB/s vs 174.7GB/s)

1280 additional rendering cores

AMD Radeon R9 M390 Mac Edition 's Advantages

Lower TDP (80W vs 100W)

Score

Benchmark

FP32 (float)

Radeon RX 580X Mobile +152%

4.963 TFLOPS

Radeon R9 M390 Mac Edition

1.962 TFLOPS

Radeon RX 580X Mobile

VS

Radeon R9 M390 Mac Edition

Graphics Card

Apr 2018

Release Date

May 2015

Mobility Radeon

Generation

Crystal System

Mobile

Type

Mobile

MXM-B (3.0)

Bus Interface

PCIe 3.0 x16

Clock Speeds

1000 MHz

Base Clock

-

1077 MHz

Boost Clock

-

2000 MHz

Memory Clock

1365 MHz

Memory

8GB

Memory Size

2GB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

256bit

256.0GB/s

Bandwidth

174.7GB/s

Render Config

36

Compute Units

16

-

2304

Shading Units

1024

144

TMUs

64

32

ROPs

32

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

2 MB

L2 Cache

512 KB

-

Theoretical Performance

34.46 GPixel/s

Pixel Rate

30.66 GPixel/s

155.1 GTexel/s

Texture Rate

61.31 GTexel/s

4.963 TFLOPS

FP16 (half)

-

4.963 TFLOPS

FP32 (float)

1.962 TFLOPS

310.2 GFLOPS

FP64 (double)

122.6 GFLOPS

Board Design

100W

TDP

80W

-

No outputs

Outputs

No outputs

None

Power Connectors

None

Graphics Processor

Polaris 20

GPU Name

Pitcairn

Polaris 20M XT

GPU Variant

Pitcairn PRO (215-0828062)

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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