GeForce GTX 660 OEM and Quadro K620 - video card comparison

GeForce GTX 660 OEM

Quadro K620

Architecture

Kepler (2012−2018)

Maxwell (2014−2018)

GPU code name

GK104

GM107

Market segment

Desktop

Workstation

Release date

August 2012

July 2014

Interface

PCIe 3.0 x16

PCIe 2.0 x16

Supplementary power connectors

1x 6-pin

None

Boost clock speed

888 MHz

1124 MHz

Core clock speed

823 MHz

1058 MHz

Floating-point performance

2,046 gflops

863.2 gflops

Manufacturing process technology

28 nm

28 nm

Number of transistors

3,540 million

1,870 million

Pipelines / CUDA cores

1152

384

Power consumption (TDP)

130 Watt

41 Watt

Texture fill rate

85.25

26.98

Memory type

GDDR5

128 Bit

Maximum RAM amount

2 GB

2 GB

Memory bus width

256 Bit

128 Bit

Memory clock speed

5600 MHz

1800 MHz

Memory bandwidth

179.2 GB/s

Up to 29 GB/s

Display Connectors

2x DVI, 1x HDMI, 1x DisplayPort

DVI-I DP

Number of simultaneous displays

-

4

HDMI

+

-

DirectX

12 (11_0)

12

CUDA

3.0

5.0

OpenCL

1.2

1.2

OpenGL

4.6

4.5

Shader Model

5.1

5

Vulkan

1.1.126

+

3D Vision Pro

-

+

Mosaic

-

+

nView Desktop Management

-

+