AMD Radeon RX 580X vs AMD Radeon RX 455 OEM

VS

AMD Radeon RX 580X

AMD Radeon RX 455 OEM

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

Main Differences

AMD Radeon RX 580X 's Advantages

Released 1 years and 10 months late

Boost Clock1340MHz

More VRAM (8GB vs 2GB)

Larger VRAM bandwidth (256.0GB/s vs 104.0GB/s)

1536 additional rendering cores

AMD Radeon RX 455 OEM 's Advantages

Lower TDP (100W vs 185W)

Score

Benchmark

FP32 (float)

Radeon RX 580X +282%

6.175 TFLOPS

Radeon RX 455 OEM

1.613 TFLOPS

Radeon RX 580X

VS

Radeon RX 455 OEM

Graphics Card

Apr 2018

Release Date

Jun 2016

Polaris

Generation

Arctic Islands

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

1257 MHz

Base Clock

-

1340 MHz

Boost Clock

-

2000 MHz

Memory Clock

1625 MHz

Memory

8GB

Memory Size

2GB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

128bit

256.0GB/s

Bandwidth

104.0GB/s

Render Config

36

Compute Units

12

-

2304

Shading Units

768

144

TMUs

48

32

ROPs

16

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

2 MB

L2 Cache

256 KB

-

Theoretical Performance

42.88 GPixel/s

Pixel Rate

16.80 GPixel/s

193.0 GTexel/s

Texture Rate

50.40 GTexel/s

6.175 TFLOPS

FP16 (half)

-

6.175 TFLOPS

FP32 (float)

1.613 TFLOPS

385.9 GFLOPS

FP64 (double)

100.8 GFLOPS

Board Design

185W

TDP

100W

450 W

Suggested PSU

300 W

1x HDMI 2.0b 3x DisplayPort 1.4a

Outputs

1x DVI 1x HDMI 1.4a 1x DisplayPort 1.2

1x 8-pin

Power Connectors

1x 6-pin

Graphics Processor

Polaris 20

GPU Name

Tobago

Polaris 20 XTX (215-0910038)

GPU Variant

Tobago PRO (215-0875010)

GCN 4.0

Architecture

GCN 2.0

GlobalFoundries

Foundry

TSMC

14 nm

Process Size

28 nm

5.7 billion

Transistors

2.08 billion

232 mm²

Die Size

160 mm²

Graphics Features

12 (12_0)

DirectX

12 (12_0)

4.6

OpenGL

4.6

2.1

OpenCL

2.0

1.2

Vulkan

1.2

-

6.4

Shader Model

6.3

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