GeForce GTX 860M SLI and Radeon 660M - video card comparison

GeForce GTX 860M SLI

Radeon 660M

Architecture

Maxwell (2014−2018)

RDNA 2 (2020−2022)

GPU code name

-

RDNA 2 Rembrandt

Market segment

Laptop

Laptop

Release date

March 2014

January 2022

Interface

-

PCIe 4.0 x8

Supplementary power connectors

-

None

SLI options

+

-

Boost clock speed

-

1900 MHz

Core clock speed

1029 MHz

-

Manufacturing process technology

28 nm

6 nm

Number of transistors

2x 1870 Million

13,100 million

Pipelines / CUDA cores

1280

384

Power consumption (TDP)

120 Watt

45 Watt

Texture fill rate

-

45.60

Memory type

GDDR5

System Shared

Maximum RAM amount

2x 4 GB

System Shared

Memory bus width

2x 128 Bit

System Shared

Memory clock speed

5000 MHz

System Shared

Shared memory

-

-

Display Connectors

-

No outputs

DirectX

12 (FL 11_0)

12 (12_1)

CUDA

+

-

OpenCL

-

2.0

OpenGL

-

4.6

Shader Model

-

6.5

Vulkan

-

1.2

Optimus

+

-