AMD Radeon Pro 455 vs AMD Radeon RX 580X Mobile

VS

AMD Radeon Pro 455 AMD Radeon RX 580X Mobile

We compared two Mobile platform GPUs: 2GB VRAM Radeon Pro 455 and 8GB VRAM Radeon RX 580X Mobile to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon Pro 455 's Advantages

Lower TDP (35W vs 100W)

AMD Radeon RX 580X Mobile 's Advantages

Released 1 years and 6 months late

Boost Clock1077MHz

More VRAM (8GB vs 2GB)

Larger VRAM bandwidth (256.0GB/s vs 81.28GB/s)

1536 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon Pro 455

1.313 TFLOPS

Radeon RX 580X Mobile +277%

4.963 TFLOPS

Radeon Pro 455

VS

Radeon RX 580X Mobile

Graphics Card

Oct 2016

Release Date

Apr 2018

Radeon Pro Mac

Generation

Mobility Radeon

Mobile

Type

Mobile

PCIe 3.0 x8

Bus Interface

MXM-B (3.0)

Clock Speeds

-

Base Clock

1000 MHz

-

Boost Clock

1077 MHz

1270 MHz

Memory Clock

2000 MHz

Memory

2GB

Memory Size

8GB

GDDR5

Memory Type

GDDR5

128bit

Memory Bus

256bit

81.28GB/s

Bandwidth

256.0GB/s

Render Config

-

SM Count

-

12

Compute Units

36

768

Shading Units

2304

48

TMUs

144

16

ROPs

32

-

Tensor Cores

-

RT Cores

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

1024 KB

L2 Cache

2 MB

Theoretical Performance

13.68 GPixel/s

Pixel Rate

34.46 GPixel/s

41.04 GTexel/s

Texture Rate

155.1 GTexel/s

1313 GFLOPS

FP16 (half)

4.963 TFLOPS

1313 GFLOPS

FP32 (float)

4.963 TFLOPS

82.08 GFLOPS

FP64 (double)

310.2 GFLOPS

Graphics Processor

Baffin

GPU Name

Polaris 20

Baffin PRO

GPU Variant

Polaris 20M XT

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

Board Design

35W

TDP

100W

-

Suggested PSU

-

No outputs

Outputs

No outputs

None

Power Connectors

None

Graphics Features

12 (12_0)

DirectX

12 (12_0)

4.6

OpenGL

4.6

2.1

OpenCL

2.1

1.2

Vulkan

1.2

-

CUDA

-

6.4

Shader Model

6.4

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