AMD Radeon R9 M390 Mac Edition vs AMD Radeon R9 M395X

VS

AMD Radeon R9 M390 Mac Edition AMD Radeon R9 M395X

We compared two Mobile platform GPUs: 2GB VRAM Radeon R9 M390 Mac Edition and 8GB VRAM Radeon R9 M395X to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon R9 M390 Mac Edition 's Advantages

Larger VRAM bandwidth (174.7GB/s vs 160.0GB/s)

AMD Radeon R9 M395X 's Advantages

More VRAM (8GB vs 2GB)

1024 additional rendering cores

Lower TDP (75W vs 80W)

Score

Benchmark

FP32 (float)

Radeon R9 M390 Mac Edition

1.962 TFLOPS

Radeon R9 M395X +50%

2.961 TFLOPS

Radeon R9 M390 Mac Edition

VS

Radeon R9 M395X

Graphics Card

May 2015

Release Date

May 2015

Crystal System

Generation

Crystal System

Mobile

Type

Mobile

PCIe 3.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

Base Clock

-

Boost Clock

-

1365 MHz

Memory Clock

1250 MHz

Memory

2GB

Memory Size

8GB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

256bit

174.7GB/s

Bandwidth

160.0GB/s

Render Config

-

SM Count

-

16

Compute Units

32

1024

Shading Units

2048

64

TMUs

128

32

ROPs

32

-

Tensor Cores

-

RT Cores

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

512 KB

L2 Cache

512 KB

Theoretical Performance

30.66 GPixel/s

Pixel Rate

23.14 GPixel/s

61.31 GTexel/s

Texture Rate

92.54 GTexel/s

-

FP16 (half)

2.961 TFLOPS

1.962 TFLOPS

FP32 (float)

2.961 TFLOPS

122.6 GFLOPS

FP64 (double)

185.1 GFLOPS

Graphics Processor

Pitcairn

GPU Name

Amethyst

Pitcairn PRO (215-0828062)

GPU Variant

Amethyst XT

GCN 1.0

Architecture

GCN 3.0

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

2.8 billion

Transistors

5 billion

212 mm²

Die Size

366 mm²

Board Design

80W

TDP

75W

-

Suggested PSU

-

No outputs

Outputs

No outputs

None

Power Connectors

None

Graphics Features

12 (11_1)

DirectX

12 (12_0)

4.6

OpenGL

4.6

1.2

OpenCL

2.0

1.2

Vulkan

1.2

-

CUDA

-

5.1

Shader Model

6.3

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