GeForce GT 645 OEM and Radeon 780M - video card comparison

GeForce GT 645 OEM

Radeon 780M

Architecture

Fermi 2.0 (2010−2014)

RDNA 3

GPU code name

GF114

Phoenix

Market segment

Desktop

Laptop

Release date

April 2012

January 2023

Interface

PCIe 2.0 x16

PCIe 4.0 x8

Supplementary power connectors

-

None

Boost clock speed

-

3000 MHz

Core clock speed

776 MHz

1500 MHz

Floating-point performance

894.0 gflops

-

Manufacturing process technology

40 nm

4 nm

Number of transistors

1,950 million

25,390 million

Pipelines / CUDA cores

288

768

Power consumption (TDP)

102 Watt

54 Watt (35 - 54 Watt TGP)

Texture fill rate

37.25

139.2

Memory type

GDDR5

System Shared

Maximum RAM amount

1 GB

System Shared

Memory bus width

192 Bit

System Shared

Memory clock speed

3828 MHz

System Shared

Memory bandwidth

91.87 GB/s

-

Shared memory

-

+

Display Connectors

2x DVI, 1x mini-HDMI

Portable Device Dependent

HDMI

+

-

DirectX

12 (11_0)

12 Ultimate (12_2)

CUDA

2.1

-

OpenCL

1.1

2.1

OpenGL

4.6

4.6

Shader Model

5.1

6.7

Vulkan

N/A

1.3