Radeon RX 6800 and GeForce RTX 4090 Max-Q - video card comparison
Radeon RX 6800
GeForce RTX 4090 Max-Q
Architecture
Navi / RDNA2 (2020−2022)
Ada Lovelace
GPU code name
Navi 21
AD103
Market segment
Desktop
Desktop
Release date
November 2020
January 2023
Interface
PCIe 4.0 x16
PCIe 4.0 x16
Supplementary power connectors
2x 8-pin
None
Boost clock speed
2105 MHz
1455 MHz
Core clock speed
1815 MHz
-
Manufacturing process technology
7 nm
4 nm
Number of transistors
26,800 million
45,900 million
Pipelines / CUDA cores
3840
9728
Power consumption (TDP)
250 Watt
80 Watt
Texture fill rate
505.2
442.3
Memory type
GDDR6
GDDR6
Maximum RAM amount
16 GB
16 GB
Memory bus width
256 Bit
256 Bit
Memory clock speed
16000 MHz
14 GB/s
Memory bandwidth
512.0 GB/s
448.0 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
2.0
3.0
OpenGL
4.6
4.6
Shader Model
6.5
6.7
Vulkan
1.2
1.3