GeForce GTX 1080 11Gbps and Radeon R5 A255 - video card comparison

GeForce GTX 1080 11Gbps

Radeon R5 A255

Architecture

Pascal (2016−2021)

GCN 3.0 (2014−2017)

GPU code name

GP104

Topaz

Market segment

Desktop

Release date

April 2017

2014

Interface

PCIe 3.0 x16

PCIe 3.0 x8

Supplementary power connectors

1x 8-pin

Boost clock speed

1733 MHz

940 MHz

Core clock speed

1607 MHz

925 MHz

Floating-point performance

8,873 gflops

Manufacturing process technology

16 nm

28 nm

Number of transistors

7,200 million

1,550 million

Pipelines / CUDA cores

2560

384

Power consumption (TDP)

180 Watt

Texture fill rate

277.3

22.56

Memory type

GDDR5X

GDDR5

Maximum RAM amount

8 GB

1 GB

Memory bus width

256 Bit

128 Bit

Memory clock speed

11008 MHz

4 GB/s

Memory bandwidth

352.3 GB/s

64 GB/s

Display Connectors

1x DVI, 1x HDMI, 3x DisplayPort

Portable Device Dependent

HDMI

DirectX

12 (12_1)

12 (12_0)

CUDA

6.1

OpenCL

1.2

2.1

OpenGL

4.6

Shader Model

6.4

6.5

Vulkan

1.2.131

1.2.170