AMD Radeon R9 255 OEM vs AMD Radeon RX 560X

VS

AMD Radeon R9 255 OEM

AMD Radeon RX 560X

We compared two Desktop platform GPUs: 2GB VRAM Radeon R9 255 OEM and 4GB VRAM Radeon RX 560X 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 75W)

AMD Radeon RX 560X 's Advantages

Released 4 years and 4 months late

Boost Clock has increased by 37% (1275MHz vs 930MHz)

More VRAM (4GB vs 2GB)

Larger VRAM bandwidth (112.0GB/s vs 73.60GB/s)

512 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon R9 255 OEM

0.952 TFLOPS

Radeon RX 560X +174%

2.611 TFLOPS

Radeon R9 255 OEM

VS

Radeon RX 560X

Graphics Card

Dec 2013

Release Date

Apr 2018

Volcanic Islands

Generation

Polaris

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 3.0 x8

Clock Speeds

900 MHz

Base Clock

1175 MHz

930 MHz

Boost Clock

1275 MHz

1150 MHz

Memory Clock

1750 MHz

Memory

2GB

Memory Size

4GB

GDDR5

Memory Type

GDDR5

128bit

Memory Bus

128bit

73.60GB/s

Bandwidth

112.0GB/s

Render Config

8

Compute Units

16

-

512

Shading Units

1024

32

TMUs

64

16

ROPs

16

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

256 KB

L2 Cache

1024 KB

-

Theoretical Performance

14.88 GPixel/s

Pixel Rate

20.40 GPixel/s

29.76 GTexel/s

Texture Rate

81.60 GTexel/s

-

FP16 (half)

2.611 TFLOPS

952.3 GFLOPS

FP32 (float)

2.611 TFLOPS

59.52 GFLOPS

FP64 (double)

163.2 GFLOPS

Board Design

65W

TDP

75W

250 W

Suggested PSU

250 W

No outputs

Outputs

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

1x 6-pin

Power Connectors

None

Graphics Processor

Cape Verde

GPU Name

Polaris 21

Cape Verde PRX

GPU Variant

Polaris 21 XT (215-0908004)

GCN 1.0

Architecture

GCN 4.0

TSMC

Foundry

GlobalFoundries

28 nm

Process Size

14 nm

1.5 billion

Transistors

3 billion

123 mm²

Die Size

123 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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