AMD Radeon Pro 555X vs AMD Radeon Pro 580

VS

AMD Radeon Pro 555X

AMD Radeon Pro 580

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

Main Differences

AMD Radeon Pro 555X 's Advantages

Released 1 years and 1 months late

Lower TDP (75W vs 185W)

AMD Radeon Pro 580 's Advantages

Boost Clock1200MHz

More VRAM (8GB vs 4GB)

Larger VRAM bandwidth (217.0GB/s vs 94.08GB/s)

1536 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon Pro 555X

1.393 TFLOPS

Radeon Pro 580 +296%

5.53 TFLOPS

Radeon Pro 555X

VS

Radeon Pro 580

Graphics Card

Jul 2018

Release Date

Jun 2017

Radeon Pro Mac

Generation

Radeon Pro Mac

Mobile

Type

Mobile

PCIe 3.0 x8

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

Base Clock

1100 MHz

-

Boost Clock

1200 MHz

1470 MHz

Memory Clock

1695 MHz

Memory

4GB

Memory Size

8GB

GDDR5

Memory Type

GDDR5

128bit

Memory Bus

256bit

94.08GB/s

Bandwidth

217.0GB/s

Render Config

12

Compute Units

36

-

768

Shading Units

2304

48

TMUs

144

16

ROPs

32

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

1024 KB

L2 Cache

2 MB

-

Theoretical Performance

14.51 GPixel/s

Pixel Rate

38.40 GPixel/s

43.54 GTexel/s

Texture Rate

172.8 GTexel/s

1393 GFLOPS

FP16 (half)

5.530 TFLOPS

1393 GFLOPS

FP32 (float)

5.530 TFLOPS

87.07 GFLOPS

FP64 (double)

345.6 GFLOPS

Board Design

75W

TDP

185W

-

No outputs

Outputs

No outputs

None

Power Connectors

None

Graphics Processor

Polaris 21

GPU Name

Ellesmere

Polaris 21 PRO

GPU Variant

Ellesmere XTA (216-0886220)

GCN 4.0

Architecture

GCN 4.0

GlobalFoundries

Foundry

GlobalFoundries

14 nm

Process Size

14 nm

3 billion

Transistors

5.7 billion

123 mm²

Die Size

232 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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