AMD Radeon R9 M395X Mac Edition vs AMD Radeon 620 Mobile

VS

AMD Radeon R9 M395X Mac Edition

AMD Radeon 620 Mobile

We compared two Mobile platform GPUs: 4GB VRAM Radeon R9 M395X Mac Edition and 2GB VRAM Radeon 620 Mobile to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon R9 M395X Mac Edition 's Advantages

More VRAM (4GB vs 2GB)

Larger VRAM bandwidth (174.7GB/s vs 14.40GB/s)

1664 additional rendering cores

AMD Radeon 620 Mobile 's Advantages

Released 4 years late

Boost Clock1024MHz

Lower TDP (50W vs 250W)

Score

Benchmark

FP32 (float)

Radeon R9 M395X Mac Edition +373%

3.723 TFLOPS

Radeon 620 Mobile

0.786 TFLOPS

Radeon R9 M395X Mac Edition

VS

Radeon 620 Mobile

Graphics Card

May 2015

Release Date

May 2019

Crystal System

Generation

Mobility Radeon

Mobile

Type

Mobile

MXM-B (3.0)

Bus Interface

PCIe 3.0 x8

Clock Speeds

-

Base Clock

730 MHz

-

Boost Clock

1024 MHz

1365 MHz

Memory Clock

900 MHz

Memory

4GB

Memory Size

2GB

GDDR5

Memory Type

DDR3

256bit

Memory Bus

64bit

174.7GB/s

Bandwidth

14.40GB/s

Render Config

32

Compute Units

6

-

2048

Shading Units

384

128

TMUs

24

32

ROPs

8

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

512 KB

L2 Cache

128 KB

-

Theoretical Performance

29.09 GPixel/s

Pixel Rate

8.192 GPixel/s

116.4 GTexel/s

Texture Rate

24.58 GTexel/s

3.723 TFLOPS

FP16 (half)

786.4 GFLOPS

3.723 TFLOPS

FP32 (float)

786.4 GFLOPS

232.7 GFLOPS

FP64 (double)

49.15 GFLOPS

Board Design

250W

TDP

50W

-

No outputs

Outputs

No outputs

None

Power Connectors

None

Graphics Processor

Amethyst

GPU Name

Polaris 24

Amethyst XT

GPU Variant

Polaris 24 XL

GCN 3.0

Architecture

GCN 3.0

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

5 billion

Transistors

1.55 billion

366 mm²

Die Size

125 mm²

Graphics Features

12 (12_0)

DirectX

12 (12_0)

4.6

OpenGL

4.6

2.0

OpenCL

2.0

1.2

Vulkan

1.2

-

6.3

Shader Model

6.3

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