Radeon RX 6900 XT and GeForce RTX 4090 Mobile - video card comparison
Radeon RX 6900 XT
GeForce RTX 4090 Mobile
Architecture
Navi / RDNA2 (2020−2022)
Ada Lovelace
GPU code name
Navi 21
GN21-X11
Market segment
Desktop
Laptop
Release date
December 2020
January 2023
Interface
PCIe 4.0 x16
PCIe 4.0 x16
Supplementary power connectors
2x 8-pin
-
Boost clock speed
2250 MHz
2040 MHz
Core clock speed
1825 MHz
-
Manufacturing process technology
7 nm
5 nm
Number of transistors
26,800 million
45,900 million
Pipelines / CUDA cores
5120
9728
Power consumption (TDP)
300 Watt
150 Watt (80 - 150 Watt TGP)
Texture fill rate
720.0
515.3
Memory type
GDDR6
GDDR6
Maximum RAM amount
16 GB
16 GB
Memory bus width
256 Bit
256 Bit
Memory clock speed
16000 MHz
20000 MHz
Memory bandwidth
512.0 GB/s
576.0 GB/s
Shared memory
-
-
Display Connectors
1x HDMI, 2x DisplayPort, 1x USB Type-C
Portable Device Dependent
HDMI
+
-
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