GeForce GTX 645 OEM and GeForce RTX 4090 Max-Q - video card comparison

GeForce GTX 645 OEM

GeForce RTX 4090 Max-Q

Architecture

Kepler (2012−2018)

Ada Lovelace

GPU code name

GK106

AD103

Market segment

Desktop

Release date

April 2013

January 2023

Interface

PCIe 3.0 x16

PCIe 4.0 x16

Supplementary power connectors

None

Boost clock speed

1455 MHz

Core clock speed

824 MHz

Floating-point performance

949.2 gflops

Manufacturing process technology

28 nm

4 nm

Number of transistors

2,540 million

45,900 million

Pipelines / CUDA cores

576

9728

Power consumption (TDP)

65 Watt

80 Watt

Texture fill rate

39.55

442.3

Memory type

GDDR5

GDDR6

Maximum RAM amount

1 GB

16 GB

Memory bus width

128 Bit

256 Bit

Memory clock speed

4000 MHz

14 GB/s

Memory bandwidth

64 GB/s

448.0 GB/s

Display Connectors

1x 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