Radeon RX 6900 and Radeon RX 6600 - video card comparison
Passmark - benchmark score Radeon RX 6900 vs Radeon RX 6600
Radeon RX 6900
27642
Radeon RX 6600
15586
Radeon RX 6900
Radeon RX 6600
Architecture
RDNA 2.0 (2020−2022)
Navi / RDNA2 (2020−2022)
GPU code name
Navi 21
Navi 23
Market segment
Desktop
Desktop
Release date
October 2020
October 2021
Interface
PCIe 4.0 x16
PCIe 4.0 x8
Supplementary power connectors
2x 8-pin
1x 8-pin
Boost clock speed
2105 MHz
2491 MHz
Core clock speed
-
2044 MHz
Manufacturing process technology
7 nm
7 nm
Number of transistors
23,000 million
11,060 million
Pipelines / CUDA cores
4608
1792
Power consumption (TDP)
255 Watt
132 Watt
Texture fill rate
606.2
279.0
Memory type
GDDR6
GDDR6
Maximum RAM amount
16 GB
8 GB
Memory bus width
256 Bit
128 Bit
Memory clock speed
16 GB/s
14500 MHz
Memory bandwidth
512.0 GB/s
224.0 GB/s
Shared memory
-
-
Display Connectors
1x HDMI, 2x DisplayPort, 1x USB Type-C
1x HDMI, 3x DisplayPort
HDMI
+
+
DirectX
12 Ultimate (12_2)
12.0 Ultimate (12_2)
OpenCL
2.0
2.1
OpenGL
4.6
4.6
Shader Model
6.5
6.5
Vulkan
1.2
1.2