Radeon RX 6900 XTX and Radeon RX 7990 XTX - video card comparison
Radeon RX 6900 XTX
Radeon RX 7990 XTX
Architecture
RDNA 2.0 (2020−2022)
RDNA 3.0 (2022)
GPU code name
Navi 21
Navi 31
Market segment
Desktop
Desktop
Release date
October 2020
2023
Interface
PCIe 4.0 x16
PCIe 4.0 x16
Supplementary power connectors
2x 8-pin
3x 8-pin
Boost clock speed
2435 MHz
3599 MHz
Manufacturing process technology
7 nm
5 nm
Number of transistors
26,800 million
57,700 million
Pipelines / CUDA cores
5120
6144
Power consumption (TDP)
330 Watt
405 Watt
Texture fill rate
779.2
1,382
Memory type
GDDR6
GDDR6
Maximum RAM amount
16 GB
24 GB
Memory bus width
256 Bit
384 Bit
Memory clock speed
18 GB/s
24 GB/s
Memory bandwidth
576.0 GB/s
1,152 GB/s
Display Connectors
1x HDMI 2.1, 2x DisplayPort 1.4a, 1x USB Type-C
1x HDMI 2.1a, 2x DisplayPort 2.1, 1x USB Type-C
HDMI
+
+
DirectX
12 Ultimate (12_2)
12 Ultimate (12_2)
OpenCL
2.1
2.2
OpenGL
4.6
4.6
Shader Model
6.7
6.7
Vulkan
1.3
1.3