GeForce GTX 660 OEM and Radeon 780M - video card comparison

GeForce GTX 660 OEM

Radeon 780M

Architecture

Kepler (2012−2018)

RDNA 3

GPU code name

GK104

Phoenix

Market segment

Desktop

Laptop

Release date

August 2012

January 2023

Interface

PCIe 3.0 x16

PCIe 4.0 x8

Supplementary power connectors

1x 6-pin

None

Boost clock speed

888 MHz

3000 MHz

Core clock speed

823 MHz

1500 MHz

Floating-point performance

2,046 gflops

-

Manufacturing process technology

28 nm

4 nm

Number of transistors

3,540 million

25,390 million

Pipelines / CUDA cores

1152

768

Power consumption (TDP)

130 Watt

54 Watt (35 - 54 Watt TGP)

Texture fill rate

85.25

139.2

Memory type

GDDR5

System Shared

Maximum RAM amount

2 GB

System Shared

Memory bus width

256 Bit

System Shared

Memory clock speed

5600 MHz

System Shared

Memory bandwidth

179.2 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

-

OpenCL

1.2

2.1

OpenGL

4.6

4.6

Shader Model

5.1

6.7

Vulkan

1.1.126

1.3