GeForce GTX 780M Mac Edition and Radeon RX 6600 XT - video card comparison

GeForce GTX 780M Mac Edition

Radeon RX 6600 XT

Architecture

Kepler (2012−2018)

Navi / RDNA2 (2020−2022)

GPU code name

GK104

Navi 23

Market segment

Desktop

Release date

November 2013

July 2021

Interface

MXM-B (3.0)

PCIe 4.0 x8

Supplementary power connectors

1x 8-pin

Boost clock speed

797 MHz

2589 MHz

Core clock speed

771 MHz

1968 MHz

Floating-point performance

2,448 gflops

Manufacturing process technology

28 nm

7 nm

Number of transistors

3,540 million

11,060 million

Pipelines / CUDA cores

1536

2048

Power consumption (TDP)

122 Watt

160 (TGP) Watt

Texture fill rate

102.0

331.4

Memory type

GDDR5

GDDR6

Maximum RAM amount

4 GB

8 GB

Memory bus width

256 Bit

128 Bit

Memory clock speed

5000 MHz

16000 MHz

Memory bandwidth

160.0 GB/s

256.0 GB/s

Shared memory

Display Connectors

No outputs

1x HDMI, 2x DisplayPort

HDMI

DirectX

12 (11_0)

12.0 Ultimate (12_2)

CUDA

3.0

OpenCL

1.2

2.1

OpenGL

4.6

Shader Model

5.1

6.5

Vulkan

1.1.126

1.2