AMD Radeon R9 M385X vs AMD Radeon R5 A255

VS

AMD Radeon R9 M385X

AMD Radeon R5 A255

We compared two Mobile platform GPUs: 4GB VRAM Radeon R9 M385X 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 M385X 's Advantages

Released 1 years and 4 months late

Boost Clock has increased by 17% (1100MHz vs 940MHz)

More VRAM (4GB vs 1024GB)

Larger VRAM bandwidth (76.80GB/s vs 64.00GB/s)

512 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon R9 M385X +173%

1.971 TFLOPS

Radeon R5 A255

0.721 TFLOPS

Radeon R9 M385X

VS

Radeon R5 A255

Graphics Card

May 2015

Release Date

Jan 2014

Gem System

Generation

All-In-One

Mobile

Type

Mobile

PCIe 3.0 x16

Bus Interface

PCIe 3.0 x8

Clock Speeds

1000 MHz

Base Clock

925 MHz

1100 MHz

Boost Clock

940 MHz

1200 MHz

Memory Clock

1000 MHz

Memory

4GB

Memory Size

1024MB

GDDR5

Memory Type

GDDR5

128bit

Memory Bus

128bit

76.80GB/s

Bandwidth

64.00GB/s

Render Config

14

Compute Units

6

-

896

Shading Units

384

56

TMUs

24

16

ROPs

8

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

256 KB

L2 Cache

256 KB

-

Theoretical Performance

17.60 GPixel/s

Pixel Rate

7.520 GPixel/s

61.60 GTexel/s

Texture Rate

22.56 GTexel/s

-

1.971 TFLOPS

FP32 (float)

721.9 GFLOPS

123.2 GFLOPS

FP64 (double)

-

Board Design

Unknown

TDP

Unknown

-

Portable Device Dependent

Outputs

Portable Device Dependent

-

Graphics Processor

Strato

GPU Name

Topaz

Strato XT

GPU Variant

Topaz PRO (216-0858030)

GCN 2.0

Architecture

GCN 3.0

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

2.08 billion

Transistors

1.55 billion

160 mm²

Die Size

125 mm²

Graphics Features

12 (12_0)

DirectX

12 (12_0)

4.6

OpenGL

4.6

2.1

OpenCL

2.1

1.2.170

Vulkan

1.2.170

-

6.5

Shader Model

6.5

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