GeForce GTX 660 OEM and GeForce GTX 260 - video card comparison

GeForce GTX 660 OEM

GeForce GTX 260

Architecture

Kepler (2012−2018)

Tesla 2.0 (2007−2013)

GPU code name

GK104

GT200

Market segment

Desktop

Desktop

Release date

August 2012

June 2008

Interface

PCIe 3.0 x16

PCIe 2.0 x16

Supplementary power connectors

1x 6-pin

2x 6-pin

SLI options

-

+

Boost clock speed

888 MHz

-

Core clock speed

823 MHz

576 MHz

CUDA cores

-

192

Floating-point performance

2,046 gflops

476.9 gflops

Manufacturing process technology

28 nm

65 nm

Number of transistors

3,540 million

1,400 million

Pipelines / CUDA cores

1152

192

Power consumption (TDP)

130 Watt

182 Watt

Maximum GPU temperature

-

105 °C

Texture fill rate

85.25

36.9 billion/sec

Memory type

GDDR5

GDDR3

Maximum RAM amount

2 GB

896 MB

Memory bus width

256 Bit

448 Bit

Memory clock speed

5600 MHz

999 MHz

Memory bandwidth

179.2 GB/s

111.9 GB/s

Display Connectors

2x DVI, 1x HDMI, 1x DisplayPort

Dual Link DVIHDTV

Multi monitor support

-

+

HDMI

+

+

Maximum VGA resolution

-

2048x1536

Audio input for HDMI

-

S/PDIF

DirectX

12 (11_0)

11.1 (10_0)

CUDA

3.0

+

OpenCL

1.2

1.1

OpenGL

4.6

2.1

Shader Model

5.1

4.0

Vulkan

1.1.126

N/A