AMD Radeon Pro Vega 20 vs AMD Radeon R5 M255

VS

AMD Radeon Pro Vega 20

AMD Radeon R5 M255

We compared two Mobile platform GPUs: 4GB VRAM Radeon Pro Vega 20 and 2GB VRAM Radeon R5 M255 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 4 years and 1 months late

Boost Clock has increased by 36% (1283MHz vs 940MHz)

More VRAM (4GB vs 2GB)

Larger VRAM bandwidth (189.4GB/s vs 32.00GB/s)

896 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon Pro Vega 20 +355%

3.284 TFLOPS

Radeon R5 M255

0.721 TFLOPS

Radeon Pro Vega 20

VS

Radeon R5 M255

Graphics Card

Nov 2018

Release Date

Oct 2014

Radeon Pro Mac

Generation

Gem System

Mobile

Type

Mobile

PCIe 3.0 x16

Bus Interface

PCIe 3.0 x8

Clock Speeds

815 MHz

Base Clock

925 MHz

1283 MHz

Boost Clock

940 MHz

740 MHz

Memory Clock

1000 MHz

Memory

4GB

Memory Size

2GB

HBM2

Memory Type

DDR3

1024bit

Memory Bus

128bit

189.4GB/s

Bandwidth

32.00GB/s

Render Config

20

Compute Units

6

-

1280

Shading Units

384

80

TMUs

24

32

ROPs

8

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

1024 KB

L2 Cache

256 KB

-

Theoretical Performance

41.06 GPixel/s

Pixel Rate

7.520 GPixel/s

102.6 GTexel/s

Texture Rate

22.56 GTexel/s

6.569 TFLOPS

FP16 (half)

721.9 GFLOPS

3.284 TFLOPS

FP32 (float)

721.9 GFLOPS

205.3 GFLOPS

FP64 (double)

45.12 GFLOPS

Board Design

100W

TDP

Unknown

-

No outputs

Outputs

Portable Device Dependent

-

Graphics Processor

Vega 12

GPU Name

Topaz

Vega 12 XTA

GPU Variant

Topaz PRO (216-0858030)

GCN 5.0

Architecture

GCN 3.0

GlobalFoundries

Foundry

TSMC

14 nm

Process Size

28 nm

Unknown

Transistors

1.55 billion

Unknown

Die Size

125 mm²

Graphics Features

12 (12_1)

DirectX

12 (12_0)

4.6

OpenGL

4.6

2.1

OpenCL

2.1

1.2

Vulkan

1.2.170

-

6.3

Shader Model

6.5

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