GeForce GTX 660 OEM and Radeon E9550 MXM - video card comparison

GeForce GTX 660 OEM

Radeon E9550 MXM

Architecture

Kepler (2012−2018)

GCN 4.0 (2016−2020)

GPU code name

GK104

Ellesmere

Market segment

Desktop

Release date

August 2012

September 2016

Interface

PCIe 3.0 x16

MXM-B (3.0)

Supplementary power connectors

1x 6-pin

None

Boost clock speed

888 MHz

1266 MHz

Core clock speed

823 MHz

1120 MHz

Floating-point performance

2,046 gflops

5,834 gflops

Manufacturing process technology

28 nm

14 nm

Number of transistors

3,540 million

5,700 million

Pipelines / CUDA cores

1152

2304

Power consumption (TDP)

130 Watt

95 Watt

Texture fill rate

85.25

182.3

Memory type

GDDR5

Maximum RAM amount

2 GB

8 GB

Memory bus width

256 Bit

Memory clock speed

5600 MHz

5000 MHz

Memory bandwidth

179.2 GB/s

160.0 GB/s

Display Connectors

2x DVI, 1x HDMI, 1x DisplayPort

1x HDMI, 3x DisplayPort

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