Radeon RX 6900 XTX and GeForce RTX 4090 Mobile - video card comparison
Radeon RX 6900 XTX
GeForce RTX 4090 Mobile
Architecture
RDNA 2.0 (2020−2022)
Ada Lovelace
GPU code name
Navi 21
GN21-X11
Market segment
Desktop
Laptop
Release date
October 2020
January 2023
Interface
PCIe 4.0 x16
PCIe 4.0 x16
Supplementary power connectors
2x 8-pin
-
Boost clock speed
2435 MHz
2040 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)
330 Watt
150 Watt (80 - 150 Watt TGP)
Texture fill rate
779.2
515.3
Memory type
GDDR6
GDDR6
Maximum RAM amount
16 GB
16 GB
Memory bus width
256 Bit
256 Bit
Memory clock speed
18 GB/s
20000 MHz
Memory bandwidth
576.0 GB/s
576.0 GB/s
Shared memory
-
-
Display Connectors
1x HDMI 2.1, 2x DisplayPort 1.4a, 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
6.7
6.7
Vulkan
1.3
1.3