AMD Radeon Pro 580X vs AMD Radeon Pro 555X

VS

AMD Radeon Pro 580X

AMD Radeon Pro 555X

We compared two Mobile platform GPUs: 8GB VRAM Radeon Pro 580X and 4GB VRAM Radeon Pro 555X to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon Pro 580X 's Advantages

Released 8 months late

Boost Clock1200MHz

More VRAM (8GB vs 4GB)

Larger VRAM bandwidth (218.9GB/s vs 94.08GB/s)

1536 additional rendering cores

AMD Radeon Pro 555X 's Advantages

Lower TDP (75W vs 185W)

Score

Benchmark

FP32 (float)

Radeon Pro 580X +296%

5.53 TFLOPS

Radeon Pro 555X

1.393 TFLOPS

Radeon Pro 580X

VS

Radeon Pro 555X

Graphics Card

Mar 2019

Release Date

Jul 2018

Radeon Pro Mac

Generation

Radeon Pro Mac

Mobile

Type

Mobile

PCIe 3.0 x16

Bus Interface

PCIe 3.0 x8

Clock Speeds

1100 MHz

Base Clock

-

1200 MHz

Boost Clock

-

1710 MHz

Memory Clock

1470 MHz

Memory

8GB

Memory Size

4GB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

128bit

218.9GB/s

Bandwidth

94.08GB/s

Render Config

36

Compute Units

12

-

2304

Shading Units

768

144

TMUs

48

32

ROPs

16

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

2 MB

L2 Cache

1024 KB

-

Theoretical Performance

38.40 GPixel/s

Pixel Rate

14.51 GPixel/s

172.8 GTexel/s

Texture Rate

43.54 GTexel/s

5.530 TFLOPS

FP16 (half)

1393 GFLOPS

5.530 TFLOPS

FP32 (float)

1393 GFLOPS

345.6 GFLOPS

FP64 (double)

87.07 GFLOPS

Board Design

185W

TDP

75W

-

2x HDMI 2.0b

Outputs

No outputs

None

Power Connectors

None

Graphics Processor

Ellesmere

GPU Name

Polaris 21

Ellesmere XTA (216-0886220)

GPU Variant

Polaris 21 PRO

GCN 4.0

Architecture

GCN 4.0

GlobalFoundries

Foundry

GlobalFoundries

14 nm

Process Size

14 nm

5.7 billion

Transistors

3 billion

232 mm²

Die Size

123 mm²

Graphics Features

12 (12_0)

DirectX

12 (12_0)

4.6

OpenGL

4.6

2.1

OpenCL

2.1

1.2

Vulkan

1.2

-

6.4

Shader Model

6.4

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