Radeon RX 6900 XT and Radeon X800 CrossFire Edition - video card comparison
Radeon RX 6900 XT
Radeon X800 CrossFire Edition
Architecture
Navi / RDNA2 (2020−2022)
R400 (2004−2008)
GPU code name
Navi 21
R423
Market segment
Desktop
Desktop
Release date
December 2020
October 2005
Interface
PCIe 4.0 x16
PCIe 1.0 x16
Supplementary power connectors
2x 8-pin
None
Boost clock speed
2250 MHz
-
Core clock speed
1825 MHz
500 MHz
Manufacturing process technology
7 nm
130 nm
Number of transistors
26,800 million
160 million
Pipelines / CUDA cores
5120
-
Power consumption (TDP)
300 Watt
-
Texture fill rate
720.0
8.000
Memory type
GDDR6
GDDR3
Maximum RAM amount
16 GB
256 MB
Memory bus width
256 Bit
256 Bit
Memory clock speed
16000 MHz
1000 MHz
Memory bandwidth
512.0 GB/s
32 GB/s
Shared memory
-
-
Display Connectors
1x HDMI, 2x DisplayPort, 1x USB Type-C
2x DVI
HDMI
+
-
DirectX
12 Ultimate (12_2)
9.0b (9_2)
OpenCL
2.1
N/A
OpenGL
4.6
2.0
Shader Model
6.5
-
Vulkan
1.2
N/A