GeForce GTX 660 OEM and Radeon X1950 PRO - video card comparison

GeForce GTX 660 OEM

Radeon X1950 PRO

Architecture

Kepler (2012−2018)

R500 (2005−2007)

GPU code name

GK104

RV570

Market segment

Desktop

Release date

August 2012

October 2006

Interface

PCIe 3.0 x16

PCIe 1.0 x16

Supplementary power connectors

1x 6-pin

Boost clock speed

888 MHz

Core clock speed

823 MHz

575 MHz

Floating-point performance

2,046 gflops

Manufacturing process technology

28 nm

80 nm

Number of transistors

3,540 million

330 million

Pipelines / CUDA cores

1152

Power consumption (TDP)

130 Watt

66 Watt

Texture fill rate

85.25

6.900

Memory type

GDDR5

GDDR3

Maximum RAM amount

2 GB

256 MB

Memory bus width

256 Bit

Memory clock speed

5600 MHz

1380 MHz

Memory bandwidth

179.2 GB/s

44.16 GB/s

Display Connectors

2x DVI, 1x HDMI, 1x DisplayPort

2x DVI, 1x S-Video

HDMI

DirectX

12 (11_0)

9.0c (9_3)

CUDA

3.0

OpenCL

1.2

N/A

OpenGL

4.6

2.0

Shader Model

5.1

3.0

Vulkan

1.1.126

N/A