AMD Radeon 550X Mobile vs AMD Radeon RX 580X Mobile

VS

AMD Radeon 550X Mobile

AMD Radeon RX 580X Mobile

We compared two Mobile platform GPUs: 4GB VRAM Radeon 550X Mobile 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 550X Mobile 's Advantages

Boost Clock has increased by 19% (1287MHz vs 1077MHz)

Lower TDP (50W vs 100W)

AMD Radeon RX 580X Mobile 's Advantages

More VRAM (8GB vs 4GB)

Larger VRAM bandwidth (256.0GB/s vs 48.00GB/s)

1664 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon 550X Mobile

1.647 TFLOPS

Radeon RX 580X Mobile +201%

4.963 TFLOPS

Radeon 550X Mobile

VS

Radeon RX 580X Mobile

Graphics Card

Apr 2018

Release Date

Apr 2018

Mobility Radeon

Generation

Mobility Radeon

Mobile

Type

Mobile

PCIe 3.0 x8

Bus Interface

MXM-B (3.0)

Clock Speeds

1100 MHz

Base Clock

1000 MHz

1287 MHz

Boost Clock

1077 MHz

1500 MHz

Memory Clock

2000 MHz

Memory

4GB

Memory Size

8GB

GDDR5

Memory Type

GDDR5

64bit

Memory Bus

256bit

48.00GB/s

Bandwidth

256.0GB/s

Render Config

10

Compute Units

36

-

640

Shading Units

2304

40

TMUs

144

16

ROPs

32

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

256 KB

L2 Cache

2 MB

-

Theoretical Performance

20.59 GPixel/s

Pixel Rate

34.46 GPixel/s

51.48 GTexel/s

Texture Rate

155.1 GTexel/s

1.647 TFLOPS

FP16 (half)

4.963 TFLOPS

1.647 TFLOPS

FP32 (float)

4.963 TFLOPS

103.0 GFLOPS

FP64 (double)

310.2 GFLOPS

Board Design

50W

TDP

100W

-

No outputs

Outputs

No outputs

None

Power Connectors

None

Graphics Processor

Polaris 23

GPU Name

Polaris 20

Polaris 23 MXT

GPU Variant

Polaris 20M XT

GCN 4.0

Architecture

GCN 4.0

GlobalFoundries

Foundry

GlobalFoundries

14 nm

Process Size

14 nm

2.2 billion

Transistors

5.7 billion

103 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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