AMD Radeon R9 M395X vs AMD Radeon Pro 555

VS

AMD Radeon R9 M395X

AMD Radeon Pro 555

We compared two Mobile platform GPUs: 8GB VRAM Radeon R9 M395X and 2GB VRAM Radeon Pro 555 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon R9 M395X 's Advantages

More VRAM (8GB vs 2GB)

Larger VRAM bandwidth (160.0GB/s vs 81.60GB/s)

1280 additional rendering cores

AMD Radeon Pro 555 's Advantages

Released 2 years and 1 months late

Score

Benchmark

FP32 (float)

Radeon R9 M395X +126%

2.961 TFLOPS

Radeon Pro 555

1.306 TFLOPS

Radeon R9 M395X

VS

Radeon Pro 555

Graphics Card

May 2015

Release Date

Jun 2017

Crystal System

Generation

Radeon Pro Mac

Mobile

Type

Mobile

PCIe 3.0 x16

Bus Interface

PCIe 3.0 x8

Clock Speeds

-

1250 MHz

Memory Clock

1275 MHz

Memory

8GB

Memory Size

2GB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

128bit

160.0GB/s

Bandwidth

81.60GB/s

Render Config

32

Compute Units

12

-

2048

Shading Units

768

128

TMUs

48

32

ROPs

16

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

512 KB

L2 Cache

1024 KB

-

Theoretical Performance

23.14 GPixel/s

Pixel Rate

13.60 GPixel/s

92.54 GTexel/s

Texture Rate

40.80 GTexel/s

2.961 TFLOPS

FP16 (half)

1306 GFLOPS

2.961 TFLOPS

FP32 (float)

1306 GFLOPS

185.1 GFLOPS

FP64 (double)

81.60 GFLOPS

Board Design

75W

TDP

75W

-

No outputs

Outputs

No outputs

None

Power Connectors

None

Graphics Processor

Amethyst

GPU Name

Polaris 21

Amethyst XT

GPU Variant

Polaris 21 PRO

GCN 3.0

Architecture

GCN 4.0

TSMC

Foundry

GlobalFoundries

28 nm

Process Size

14 nm

5 billion

Transistors

3 billion

366 mm²

Die Size

123 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

-

6.3

Shader Model

6.4

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