GeForce GTX 660M and GeForce GTX 555 OEM - video card comparison

GeForce GTX 660M

GeForce GTX 555 OEM

Architecture

Kepler (2012−2018)

Fermi 2.0 (2010−2014)

GPU code name

N13E-GE

GF114

Market segment

Laptop

Desktop

Release date

March 2012

May 2011

Bus support

PCI Express 2.0, PCI Express 3.0

-

Interface

MXM-B (3.0)

PCIe 2.0 x16

Supplementary power connectors

-

2x 6-pin

SLI options

+

-

Boost clock speed

950 MHz

-

Core clock speed

835 MHz

736 MHz

CUDA cores

384

-

Floating-point performance

729.6 gflops

847.9 gflops

Manufacturing process technology

28 nm

40 nm

Number of transistors

1,270 million

1,950 million

Pipelines / CUDA cores

384

288

Power consumption (TDP)

50 Watt

150 Watt

Texture fill rate

30.4 billion/sec

35.33

Memory type

GDDR5

GDDR5

Maximum RAM amount

2 GB

1 GB

Memory bus width

128bit

192 Bit

Memory clock speed

2000 MHz

3828 MHz

Memory bandwidth

64.0 GB/s

91.87 GB/s

Shared memory

-

-

Display Connectors

No outputs

2x DVI, 1x mini-HDMI

HDMI

+

+

HDCP

+

-

Maximum VGA resolution

Up to 2048x1536

-

DirectX

12 API

12 (11_0)

CUDA

+

2.1

OpenCL

1.1

1.1

OpenGL

4.5

4.6

Shader Model

5.1

5.1

Vulkan

1.1.126

N/A

Optimus

+

-