AMD Radeon R5 M255 vs AMD Radeon RX 580 Mobile

VS

AMD Radeon R5 M255

AMD Radeon RX 580 Mobile

We compared two Mobile platform GPUs: 2GB VRAM Radeon R5 M255 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 2 years and 6 months late

Boost Clock has increased by 15% (1077MHz vs 940MHz)

More VRAM (8GB vs 2GB)

Larger VRAM bandwidth (256.0GB/s vs 32.00GB/s)

1920 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon R5 M255

0.721 TFLOPS

Radeon RX 580 Mobile +588%

4.963 TFLOPS

Radeon R5 M255

VS

Radeon RX 580 Mobile

Graphics Card

Oct 2014

Release Date

Apr 2017

Gem System

Generation

Mobility Radeon

Mobile

Type

Mobile

PCIe 3.0 x8

Bus Interface

MXM-B (3.0)

Clock Speeds

925 MHz

Base Clock

1000 MHz

940 MHz

Boost Clock

1077 MHz

1000 MHz

Memory Clock

2000 MHz

Memory

2GB

Memory Size

8GB

DDR3

Memory Type

GDDR5

128bit

Memory Bus

256bit

32.00GB/s

Bandwidth

256.0GB/s

Render Config

6

Compute Units

36

-

384

Shading Units

2304

24

TMUs

144

8

ROPs

32

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

256 KB

L2 Cache

2 MB

-

Theoretical Performance

7.520 GPixel/s

Pixel Rate

34.46 GPixel/s

22.56 GTexel/s

Texture Rate

155.1 GTexel/s

721.9 GFLOPS

FP16 (half)

4.963 TFLOPS

721.9 GFLOPS

FP32 (float)

4.963 TFLOPS

45.12 GFLOPS

FP64 (double)

310.2 GFLOPS

Board Design

Unknown

TDP

100W

-

Portable Device Dependent

Outputs

No outputs

-

Power Connectors

None

Graphics Processor

Topaz

GPU Name

Polaris 20

Topaz PRO (216-0858030)

GPU Variant

Polaris 20M XT

GCN 3.0

Architecture

GCN 4.0

TSMC

Foundry

GlobalFoundries

28 nm

Process Size

14 nm

1.55 billion

Transistors

5.7 billion

125 mm²

Die Size

232 mm²

Graphics Features

12 (12_0)

DirectX

12 (12_0)

4.6

OpenGL

4.6

2.1

OpenCL

2.1

1.2.170

Vulkan

1.2

-

6.5

Shader Model

6.4

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