GeForce GTX 660 Rev. 2 and GeForce RTX 4080 Mobile - video card comparison

GeForce GTX 660 Rev. 2

GeForce RTX 4080 Mobile

Architecture

Kepler (2012−2018)

Ada Lovelace

GPU code name

GK104

GN21-X9

Market segment

Desktop

Laptop

Release date

September 2014

January 2023

Interface

PCIe 3.0 x16

PCIe 4.0 x16

Supplementary power connectors

1x 6-pin

Boost clock speed

1032 MHz

2280 MHz

Core clock speed

980 MHz

1860 MHz

Floating-point performance

1,981 gflops

Manufacturing process technology

28 nm

5 nm

Number of transistors

3,540 million

35,800 million

Pipelines / CUDA cores

960

7424

Power consumption (TDP)

140 Watt

150 Watt (60 - 150 Watt TGP)

Texture fill rate

82.56

386.3

Memory type

GDDR5

GDDR6X

Maximum RAM amount

2 GB

12 GB

Memory bus width

192 Bit

Memory clock speed

6008 MHz

20000 MHz

Memory bandwidth

144.2 GB/s

432.0 GB/s

Shared memory

Display Connectors

2x DVI, 1x HDMI, 1x DisplayPort

Portable Device Dependent

HDMI

DirectX

12 (11_0)

12 Ultimate (12_2)

CUDA

3.0

8.9

OpenCL

1.2

3.0

OpenGL

4.6

Shader Model

5.1

6.7

Vulkan

1.1.126

1.3