AMD Radeon RX 580X vs AMD Radeon R9 255 OEM

VS

AMD Radeon RX 580X

AMD Radeon R9 255 OEM

We compared two Desktop platform GPUs: 8GB VRAM Radeon RX 580X and 2GB VRAM Radeon R9 255 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 4 years and 4 months late

Boost Clock has increased by 44% (1340MHz vs 930MHz)

More VRAM (8GB vs 2GB)

Larger VRAM bandwidth (256.0GB/s vs 73.60GB/s)

1792 additional rendering cores

AMD Radeon R9 255 OEM 's Advantages

Lower TDP (65W vs 185W)

Score

Benchmark

FP32 (float)

Radeon RX 580X +548%

6.175 TFLOPS

Radeon R9 255 OEM

0.952 TFLOPS

Radeon RX 580X

VS

Radeon R9 255 OEM

Graphics Card

Apr 2018

Release Date

Dec 2013

Polaris

Generation

Volcanic Islands

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

1257 MHz

Base Clock

900 MHz

1340 MHz

Boost Clock

930 MHz

2000 MHz

Memory Clock

1150 MHz

Memory

8GB

Memory Size

2GB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

128bit

256.0GB/s

Bandwidth

73.60GB/s

Render Config

36

Compute Units

8

-

2304

Shading Units

512

144

TMUs

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

14.88 GPixel/s

193.0 GTexel/s

Texture Rate

29.76 GTexel/s

6.175 TFLOPS

FP16 (half)

-

6.175 TFLOPS

FP32 (float)

952.3 GFLOPS

385.9 GFLOPS

FP64 (double)

59.52 GFLOPS

Board Design

185W

TDP

65W

450 W

Suggested PSU

250 W

1x HDMI 2.0b 3x DisplayPort 1.4a

Outputs

No outputs

1x 8-pin

Power Connectors

1x 6-pin

Graphics Processor

Polaris 20

GPU Name

Cape Verde

Polaris 20 XTX (215-0910038)

GPU Variant

Cape Verde PRX

GCN 4.0

Architecture

GCN 1.0

GlobalFoundries

Foundry

TSMC

14 nm

Process Size

28 nm

5.7 billion

Transistors

1.5 billion

232 mm²

Die Size

123 mm²

Graphics Features

12 (12_0)

DirectX

12 (11_1)

4.6

OpenGL

4.6

2.1

OpenCL

1.2

Vulkan

1.2

-

6.4

Shader Model

5.1

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