AMD Radeon RX 550X vs AMD Radeon RX 580

VS

AMD Radeon RX 550X

AMD Radeon RX 580

We compared two Desktop platform GPUs: 4GB VRAM Radeon RX 550X and 8GB VRAM Radeon RX 580 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon RX 550X 's Advantages

Released 1 years and 8 months late

Lower TDP (50W vs 185W)

AMD Radeon RX 580 's Advantages

Boost Clock has increased by 13% (1340MHz vs 1183MHz)

More VRAM (8GB vs 4GB)

Larger VRAM bandwidth (256.0GB/s vs 96.00GB/s)

1792 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon RX 550X

1.211 TFLOPS

Radeon RX 580 +409%

6.175 TFLOPS

Radeon RX 550X

VS

Radeon RX 580

Graphics Card

Dec 2018

Release Date

Apr 2017

Polaris

Generation

Polaris

Desktop

Type

Desktop

PCIe 3.0 x8

Bus Interface

PCIe 3.0 x16

Clock Speeds

1100 MHz

Base Clock

1257 MHz

1183 MHz

Boost Clock

1340 MHz

1500 MHz

Memory Clock

2000 MHz

Memory

4GB

Memory Size

8GB

GDDR5

Memory Type

GDDR5

128bit

Memory Bus

256bit

96.00GB/s

Bandwidth

256.0GB/s

Render Config

8

Compute Units

36

-

512

Shading Units

2304

32

TMUs

144

16

ROPs

32

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

512 KB

L2 Cache

2 MB

-

Theoretical Performance

18.93 GPixel/s

Pixel Rate

42.88 GPixel/s

37.86 GTexel/s

Texture Rate

193.0 GTexel/s

1211 GFLOPS

FP16 (half)

6.175 TFLOPS

1211 GFLOPS

FP32 (float)

6.175 TFLOPS

75.71 GFLOPS

FP64 (double)

385.9 GFLOPS

Board Design

50W

TDP

185W

250 W

Suggested PSU

450 W

1x DVI 1x HDMI 2.0b 1x DisplayPort 1.4a

Outputs

1x HDMI 2.0b 3x DisplayPort 1.4a

None

Power Connectors

1x 8-pin

Graphics Processor

Lexa

GPU Name

Polaris 20

Lexa PRO (215-0904018)

GPU Variant

Polaris 20 XTX (215-0910038)

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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