AMD Radeon RX 580G vs AMD Radeon 550X 640SP

VS

AMD Radeon RX 580G

AMD Radeon 550X 640SP

We compared two Desktop platform GPUs: 8GB VRAM Radeon RX 580G and 4GB VRAM Radeon 550X 640SP to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon RX 580G 's Advantages

Released 6 months late

Boost Clock has increased by 24% (1330MHz vs 1071MHz)

More VRAM (8GB vs 4GB)

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

1664 additional rendering cores

AMD Radeon 550X 640SP 's Advantages

Lower TDP (50W vs 185W)

Score

Benchmark

FP32 (float)

Radeon RX 580G +347%

6.129 TFLOPS

Radeon 550X 640SP

1.371 TFLOPS

Radeon RX 580G

VS

Radeon 550X 640SP

Graphics Card

Oct 2018

Release Date

Apr 2018

Polaris

Generation

Polaris

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 3.0 x8

Clock Speeds

1257 MHz

Base Clock

1019 MHz

1330 MHz

Boost Clock

1071 MHz

2000 MHz

Memory Clock

1500 MHz

Memory

8GB

Memory Size

4GB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

64bit

256.0GB/s

Bandwidth

48.00GB/s

Render Config

36

Compute Units

10

-

2304

Shading Units

640

144

TMUs

40

32

ROPs

16

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

2 MB

L2 Cache

256 KB

-

Theoretical Performance

42.56 GPixel/s

Pixel Rate

17.14 GPixel/s

191.5 GTexel/s

Texture Rate

42.84 GTexel/s

6.129 TFLOPS

FP16 (half)

1371 GFLOPS

6.129 TFLOPS

FP32 (float)

1371 GFLOPS

383.0 GFLOPS

FP64 (double)

85.68 GFLOPS

Board Design

185W

TDP

50W

450 W

Suggested PSU

250 W

1x HDMI 2.0b 3x DisplayPort 1.4a

Outputs

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

1x 8-pin

Power Connectors

None

Graphics Processor

Polaris 20

GPU Name

Lexa

Polaris 20 XTX (215-0910038)

GPU Variant

Lexa PRO (215-0904018)

GCN 4.0

Architecture

GCN 4.0

GlobalFoundries

Foundry

GlobalFoundries

14 nm

Process Size

14 nm

5.7 billion

Transistors

2.2 billion

232 mm²

Die Size

103 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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