AMD Radeon R5 M420 vs AMD Radeon RX 580 Mobile

VS

AMD Radeon R5 M420

AMD Radeon RX 580 Mobile

We compared two Mobile platform GPUs: 4GB VRAM Radeon R5 M420 and 8GB VRAM Radeon RX 580 Mobile to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon RX 580 Mobile 's Advantages

Released 11 months late

Boost Clock has increased by 27% (1077MHz vs 850MHz)

More VRAM (8GB vs 4GB)

Larger VRAM bandwidth (256.0GB/s vs 16.00GB/s)

1984 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon R5 M420

0.544 TFLOPS

Radeon RX 580 Mobile +812%

4.963 TFLOPS

Radeon R5 M420

VS

Radeon RX 580 Mobile

Graphics Card

May 2016

Release Date

Apr 2017

Gem System

Generation

Mobility Radeon

Mobile

Type

Mobile

PCIe 3.0 x8

Bus Interface

MXM-B (3.0)

Clock Speeds

780 MHz

Base Clock

1000 MHz

850 MHz

Boost Clock

1077 MHz

1000 MHz

Memory Clock

2000 MHz

Memory

4GB

Memory Size

8GB

DDR3

Memory Type

GDDR5

64bit

Memory Bus

256bit

16.00GB/s

Bandwidth

256.0GB/s

Render Config

5

Compute Units

36

-

320

Shading Units

2304

20

TMUs

144

8

ROPs

32

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

128 KB

L2 Cache

2 MB

-

Theoretical Performance

6.800 GPixel/s

Pixel Rate

34.46 GPixel/s

17.00 GTexel/s

Texture Rate

155.1 GTexel/s

-

FP16 (half)

4.963 TFLOPS

544.0 GFLOPS

FP32 (float)

4.963 TFLOPS

34.00 GFLOPS

FP64 (double)

310.2 GFLOPS

Board Design

Unknown

TDP

100W

-

Portable Device Dependent

Outputs

No outputs

-

Power Connectors

None

Graphics Processor

Jet

GPU Name

Polaris 20

Jet PRO (216-0856040)

GPU Variant

Polaris 20M XT

GCN 1.0

Architecture

GCN 4.0

TSMC

Foundry

GlobalFoundries

28 nm

Process Size

14 nm

0.69 billion

Transistors

5.7 billion

56 mm²

Die Size

232 mm²

Graphics Features

12 (11_1)

DirectX

12 (12_0)

4.6

OpenGL

4.6

2.1 (1.2)

OpenCL

2.1

1.2.170

Vulkan

1.2

-

6.5 (5.1)

Shader Model

6.4

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