AMD Radeon Pro Vega 20 vs AMD Radeon R9 M390 Mac Edition

VS

AMD Radeon Pro Vega 20 AMD Radeon R9 M390 Mac Edition

We compared two Mobile platform GPUs: 4GB VRAM Radeon Pro Vega 20 and 2GB VRAM Radeon R9 M390 Mac Edition to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon Pro Vega 20 's Advantages

Released 3 years and 6 months late

Boost Clock1283MHz

More VRAM (4GB vs 2GB)

Larger VRAM bandwidth (189.4GB/s vs 174.7GB/s)

256 additional rendering cores

AMD Radeon R9 M390 Mac Edition 's Advantages

Lower TDP (80W vs 100W)

Score

Benchmark

FP32 (float)

Radeon Pro Vega 20 +67%

3.284 TFLOPS

Radeon R9 M390 Mac Edition

1.962 TFLOPS

Radeon Pro Vega 20

VS

Radeon R9 M390 Mac Edition

Graphics Card

Nov 2018

Release Date

May 2015

Radeon Pro Mac

Generation

Crystal System

Mobile

Type

Mobile

PCIe 3.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

815 MHz

Base Clock

-

1283 MHz

Boost Clock

-

740 MHz

Memory Clock

1365 MHz

Memory

4GB

Memory Size

2GB

HBM2

Memory Type

GDDR5

1024bit

Memory Bus

256bit

189.4GB/s

Bandwidth

174.7GB/s

Render Config

-

SM Count

-

20

Compute Units

16

1280

Shading Units

1024

80

TMUs

64

32

ROPs

32

-

Tensor Cores

-

RT Cores

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

1024 KB

L2 Cache

512 KB

Theoretical Performance

41.06 GPixel/s

Pixel Rate

30.66 GPixel/s

102.6 GTexel/s

Texture Rate

61.31 GTexel/s

6.569 TFLOPS

FP16 (half)

-

3.284 TFLOPS

FP32 (float)

1.962 TFLOPS

205.3 GFLOPS

FP64 (double)

122.6 GFLOPS

Graphics Processor

Vega 12

GPU Name

Pitcairn

Vega 12 XTA

GPU Variant

Pitcairn PRO (215-0828062)

GCN 5.0

Architecture

GCN 1.0

GlobalFoundries

Foundry

TSMC

14 nm

Process Size

28 nm

Unknown

Transistors

2.8 billion

Unknown

Die Size

212 mm²

Board Design

100W

TDP

80W

-

Suggested PSU

-

No outputs

Outputs

No outputs

-

Power Connectors

None

Graphics Features

12 (12_1)

DirectX

12 (11_1)

4.6

OpenGL

4.6

2.1

OpenCL

1.2

Vulkan

1.2

-

CUDA

-

6.3

Shader Model

5.1

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