AMD Radeon R9 M390 Mac Edition vs AMD Radeon E9171 MCM

VS

AMD Radeon R9 M390 Mac Edition

AMD Radeon E9171 MCM

We compared two Mobile platform GPUs: 2GB VRAM Radeon R9 M390 Mac Edition and 4GB VRAM Radeon E9171 MCM 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 96.00GB/s)

512 additional rendering cores

AMD Radeon E9171 MCM 's Advantages

Released 2 years and 5 months late

Boost Clock1219MHz

More VRAM (4GB vs 2GB)

Lower TDP (40W vs 80W)

Score

Benchmark

FP32 (float)

Radeon R9 M390 Mac Edition +57%

1.962 TFLOPS

Radeon E9171 MCM

1.248 TFLOPS

Radeon R9 M390 Mac Edition

VS

Radeon E9171 MCM

Graphics Card

May 2015

Release Date

Oct 2017

Crystal System

Generation

Embedded

Mobile

Type

Mobile

PCIe 3.0 x16

Bus Interface

PCIe 3.0 x8

Clock Speeds

-

Base Clock

1124 MHz

-

Boost Clock

1219 MHz

1365 MHz

Memory Clock

1500 MHz

Memory

2GB

Memory Size

4GB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

128bit

174.7GB/s

Bandwidth

96.00GB/s

Render Config

16

Compute Units

8

-

1024

Shading Units

512

64

TMUs

32

ROPs

16

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

512 KB

L2 Cache

512 KB

-

Theoretical Performance

30.66 GPixel/s

Pixel Rate

19.50 GPixel/s

61.31 GTexel/s

Texture Rate

39.01 GTexel/s

-

FP16 (half)

1248 GFLOPS

1.962 TFLOPS

FP32 (float)

1248 GFLOPS

122.6 GFLOPS

FP64 (double)

78.02 GFLOPS

Board Design

80W

TDP

40W

-

No outputs

Outputs

No outputs

None

Power Connectors

None

Graphics Processor

Pitcairn

GPU Name

Lexa

Pitcairn PRO (215-0828062)

GPU Variant

Lexa MCM Pro

GCN 1.0

Architecture

GCN 4.0

TSMC

Foundry

GlobalFoundries

28 nm

Process Size

14 nm

2.8 billion

Transistors

2.2 billion

212 mm²

Die Size

103 mm²

Graphics Features

12 (11_1)

DirectX

12 (12_0)

4.6

OpenGL

4.6

1.2

OpenCL

2.1

1.2

Vulkan

1.2

-

5.1

Shader Model

6.4

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