AMD Radeon R9 255 OEM vs AMD Radeon RX 580X

VS

AMD Radeon R9 255 OEM

AMD Radeon RX 580X

We compared two Desktop platform GPUs: 2GB VRAM Radeon R9 255 OEM and 8GB VRAM Radeon RX 580X to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon R9 255 OEM 's Advantages

Lower TDP (65W vs 185W)

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

Score

Benchmark

FP32 (float)

Radeon R9 255 OEM

0.952 TFLOPS

Radeon RX 580X +548%

6.175 TFLOPS

Radeon R9 255 OEM

VS

Radeon RX 580X

Graphics Card

Dec 2013

Release Date

Apr 2018

Volcanic Islands

Generation

Polaris

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

900 MHz

Base Clock

1257 MHz

930 MHz

Boost Clock

1340 MHz

1150 MHz

Memory Clock

2000 MHz

Memory

2GB

Memory Size

8GB

GDDR5

Memory Type

GDDR5

128bit

Memory Bus

256bit

73.60GB/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)

256 KB

L2 Cache

2 MB

-

Theoretical Performance

14.88 GPixel/s

Pixel Rate

42.88 GPixel/s

29.76 GTexel/s

Texture Rate

193.0 GTexel/s

-

FP16 (half)

6.175 TFLOPS

952.3 GFLOPS

FP32 (float)

6.175 TFLOPS

59.52 GFLOPS

FP64 (double)

385.9 GFLOPS

Board Design

65W

TDP

185W

250 W

Suggested PSU

450 W

No outputs

Outputs

1x HDMI 2.0b 3x DisplayPort 1.4a

1x 6-pin

Power Connectors

1x 8-pin

Graphics Processor

Cape Verde

GPU Name

Polaris 20

Cape Verde PRX

GPU Variant

Polaris 20 XTX (215-0910038)

GCN 1.0

Architecture

GCN 4.0

TSMC

Foundry

GlobalFoundries

28 nm

Process Size

14 nm

1.5 billion

Transistors

5.7 billion

123 mm²

Die Size

232 mm²

Graphics Features

12 (11_1)

DirectX

12 (12_0)

4.6

OpenGL

4.6

1.2

OpenCL

2.1

1.2

Vulkan

1.2

-

5.1

Shader Model

6.4

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