Radeon RX 6600M and GeForce RTX 4080 Mobile - video card comparison
Radeon RX 6600M
GeForce RTX 4080 Mobile
Architecture
RDNA 2 (2020−2022)
Ada Lovelace
GPU code name
R21M-E65-70
GN21-X9
Market segment
Laptop
Laptop
Release date
September 2020
January 2023
Interface
PCIe 4.0 x8
PCIe 4.0 x16
Supplementary power connectors
None
-
Boost clock speed
2177 MHz
2280 MHz
Core clock speed
2068 MHz
1860 MHz
Manufacturing process technology
7 nm
5 nm
Number of transistors
11,060 million
35,800 million
Pipelines / CUDA cores
1792
7424
Power consumption (TDP)
100 Watt (50 - 100 Watt TGP)
150 Watt (60 - 150 Watt TGP)
Texture fill rate
235.8
386.3
Memory type
GDDR6
GDDR6X
Maximum RAM amount
8 GB
12 GB
Memory bus width
128 Bit
192 Bit
Memory clock speed
14000 MHz
20000 MHz
Memory bandwidth
256.0 GB/s
432.0 GB/s
Shared memory
-
-
Display Connectors
No outputs
Portable Device Dependent
DirectX
12 Ultimate (12_2)
12 Ultimate (12_2)
CUDA
-
8.9
OpenCL
2.1
3.0
OpenGL
4.6
4.6
Shader Model
6.5
6.7
Vulkan
1.2
1.3