GeForce GTX 660 OEM and Radeon RX 550 Mobile - video card comparison

GeForce GTX 660 OEM

Radeon RX 550 Mobile

Architecture

Kepler (2012−2018)

Polaris (2016−2019)

GPU code name

GK104

Polaris 12

Market segment

Desktop

Laptop

Release date

August 2012

March 2017

Interface

PCIe 3.0 x16

PCIe 3.0 x8

Supplementary power connectors

1x 6-pin

Boost clock speed

888 MHz

1476 MHz

Core clock speed

823 MHz

1287 MHz

Floating-point performance

2,046 gflops

1,647 gflops

Manufacturing process technology

28 nm

14 nm

Number of transistors

3,540 million

2,200 million

Pipelines / CUDA cores

1152

640

Power consumption (TDP)

130 Watt

50 Watt

Texture fill rate

85.25

51.48

Memory type

GDDR5

Maximum RAM amount

2 GB

4 GB

Memory bus width

256 Bit

128 Bit

Memory clock speed

5600 MHz

6000 MHz

Memory bandwidth

179.2 GB/s

96 GB/s

Shared memory

Display Connectors

2x DVI, 1x HDMI, 1x DisplayPort

No outputs

HDMI

DirectX

12 (11_0)

12 (12_0)

CUDA

3.0

OpenCL

1.2

2.0

OpenGL

4.6

Shader Model

5.1

6.4

Vulkan

1.1.126

1.2.131

FreeSync