GeForce GT 820M and GeForce RTX 4090 Mobile - video card comparison
GeForce GT 820M
GeForce RTX 4090 Mobile
Architecture
Fermi 2.0 (2010−2014)
Ada Lovelace
GPU code name
GF117
GN21-X11
Market segment
Desktop
Laptop
Release date
November 2013
January 2023
Interface
PCIe 2.0 x16
PCIe 4.0 x16
Boost clock speed
-
2040 MHz
Core clock speed
775 MHz
-
Floating-point performance
297.6 gflops
-
Manufacturing process technology
28 nm
5 nm
Number of transistors
585 million
45,900 million
Pipelines / CUDA cores
96
9728
Power consumption (TDP)
15 Watt
150 Watt (80 - 150 Watt TGP)
Texture fill rate
12.40
515.3
Memory type
DDR3
GDDR6
Maximum RAM amount
1 GB
16 GB
Memory bus width
64 Bit
256 Bit
Memory clock speed
1800 MHz
20000 MHz
Memory bandwidth
14.4 GB/s
576.0 GB/s
Shared memory
-
-
Display Connectors
No outputs
Portable Device Dependent
DirectX
12 (11_0)
12 Ultimate (12_2)
CUDA
2.1
8.9
OpenCL
1.1
3.0
OpenGL
4.6
4.6
Shader Model
5.1
6.7
Vulkan
N/A
1.3