Radeon RX 6800 XT and Radeon RX 7990 XTX - video card comparison
Radeon RX 6800 XT
Radeon RX 7990 XTX
Architecture
Navi / RDNA2 (2020−2022)
RDNA 3.0 (2022)
GPU code name
Navi 21
Navi 31
Market segment
Desktop
Desktop
Release date
November 2020
2023
Interface
PCIe 4.0 x16
PCIe 4.0 x16
Supplementary power connectors
2x 8-pin
3x 8-pin
Boost clock speed
2250 MHz
3599 MHz
Core clock speed
1825 MHz
-
Manufacturing process technology
7 nm
5 nm
Number of transistors
26,800 million
57,700 million
Pipelines / CUDA cores
4608
6144
Power consumption (TDP)
300 Watt
405 Watt
Texture fill rate
648.0
1,382
Memory type
GDDR6
GDDR6
Maximum RAM amount
16 GB
24 GB
Memory bus width
256 Bit
384 Bit
Memory clock speed
16000 MHz
24 GB/s
Memory bandwidth
512.0 GB/s
1,152 GB/s
Shared memory
-
-
Display Connectors
1x HDMI, 2x DisplayPort, 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
2.0
2.2
OpenGL
4.6
4.6
Shader Model
6.5
6.7
Vulkan
1.2
1.3