Radeon HD 7850M and GeForce RTX 4090 Mobile - video card comparison
Radeon HD 7850M
GeForce RTX 4090 Mobile
Architecture
GCN (2011−2017)
Ada Lovelace
GPU code name
Heathrow Pro
GN21-X11
Market segment
Laptop
Laptop
Release date
April 2012
January 2023
Interface
PCIe 3.0 x16
PCIe 4.0 x16
Boost clock speed
-
2040 MHz
Core clock speed
675 MHz
-
Floating-point performance
864.0 gflops
-
Manufacturing process technology
28 nm
5 nm
Number of transistors
1,500 million
45,900 million
Pipelines / CUDA cores
640
9728
Power consumption (TDP)
40 Watt
150 Watt (80 - 150 Watt TGP)
Texture fill rate
27.00
515.3
Memory type
GDDR5
GDDR6
Maximum RAM amount
2 GB
16 GB
Memory bus width
128 Bit
256 Bit
Memory clock speed
4000 MHz
20000 MHz
Memory bandwidth
64 GB/s
576.0 GB/s
Shared memory
-
-
Display Connectors
No outputs
Portable Device Dependent
DirectX
12 (11_1)
12 Ultimate (12_2)
CUDA
-
8.9
OpenCL
1.2
3.0
OpenGL
4.6
4.6
Shader Model
5.1
6.7
Vulkan
1.2.131
1.3