GeForce GTX 660 OEM and GeForce GTX 275 - video card comparison

GeForce GTX 660 OEM

GeForce GTX 275

Architecture

Kepler (2012−2018)

Tesla 2.0 (2007−2013)

GPU code name

GK104

GT200B

Market segment

Desktop

Desktop

Release date

August 2012

January 2009

Bus support

-

PCI-E 2.0

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

633 MHz

CUDA cores

-

240

Floating-point performance

2,046 gflops

673.9 gflops

Manufacturing process technology

28 nm

55 nm

Number of transistors

3,540 million

1,400 million

Pipelines / CUDA cores

1152

240

Power consumption (TDP)

130 Watt

219 Watt

Maximum GPU temperature

-

105 °C

Texture fill rate

85.25

50.6 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

1134 MHz

Memory bandwidth

179.2 GB/s

127.0 GB/s

Display Connectors

2x DVI, 1x HDMI, 1x DisplayPort

Two Dual Link DVI

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

3.0

Shader Model

5.1

4.0

Vulkan

1.1.126

N/A