AMD Radeon R9 M485X vs AMD Radeon R5 A255

VS

AMD Radeon R9 M485X

AMD Radeon R5 A255

We compared two Mobile platform GPUs: 8GB VRAM Radeon R9 M485X and 1024MB VRAM Radeon R5 A255 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon R9 M485X 's Advantages

Released 2 years and 4 months late

More VRAM (8GB vs 1024GB)

Larger VRAM bandwidth (160.0GB/s vs 64.00GB/s)

1664 additional rendering cores

AMD Radeon R5 A255 's Advantages

Boost Clock940MHz

Score

Benchmark

FP32 (float)

Radeon R9 M485X +310%

2.961 TFLOPS

Radeon R5 A255

0.721 TFLOPS

Radeon R9 M485X

VS

Radeon R5 A255

Graphics Card

May 2016

Release Date

Jan 2014

Crystal System

Generation

All-In-One

Mobile

Type

Mobile

MXM-B (3.0)

Bus Interface

PCIe 3.0 x8

Clock Speeds

-

Base Clock

925 MHz

-

Boost Clock

940 MHz

1250 MHz

Memory Clock

1000 MHz

Memory

8GB

Memory Size

1024MB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

128bit

160.0GB/s

Bandwidth

64.00GB/s

Render Config

32

Compute Units

6

-

2048

Shading Units

384

128

TMUs

24

32

ROPs

8

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

512 KB

L2 Cache

256 KB

-

Theoretical Performance

23.14 GPixel/s

Pixel Rate

7.520 GPixel/s

92.54 GTexel/s

Texture Rate

22.56 GTexel/s

2.961 TFLOPS

FP16 (half)

-

2.961 TFLOPS

FP32 (float)

721.9 GFLOPS

185.1 GFLOPS

FP64 (double)

-

Board Design

250W

TDP

Unknown

-

No outputs

Outputs

Portable Device Dependent

None

Power Connectors

-

Graphics Processor

Amethyst

GPU Name

Topaz

Amethyst XT

GPU Variant

Topaz PRO (216-0858030)

GCN 3.0

Architecture

GCN 3.0

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

5 billion

Transistors

1.55 billion

366 mm²

Die Size

125 mm²

Graphics Features

12 (12_0)

DirectX

12 (12_0)

4.6

OpenGL

4.6

2.0

OpenCL

2.1

1.2

Vulkan

1.2.170

-

6.3

Shader Model

6.5

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