Radeon RX 6900 XTX and Radeon 660M - video card comparison
Radeon RX 6900 XTX
Radeon 660M
Architecture
RDNA 2.0 (2020−2022)
RDNA 2 (2020−2022)
GPU code name
Navi 21
RDNA 2 Rembrandt
Market segment
Desktop
Laptop
Release date
October 2020
January 2022
Interface
PCIe 4.0 x16
PCIe 4.0 x8
Supplementary power connectors
2x 8-pin
None
Boost clock speed
2435 MHz
1900 MHz
Manufacturing process technology
7 nm
6 nm
Number of transistors
26,800 million
13,100 million
Pipelines / CUDA cores
5120
384
Power consumption (TDP)
330 Watt
45 Watt
Texture fill rate
779.2
45.60
Memory type
GDDR6
System Shared
Maximum RAM amount
16 GB
System Shared
Memory bus width
256 Bit
System Shared
Memory clock speed
18 GB/s
System Shared
Memory bandwidth
576.0 GB/s
-
Shared memory
-
-
Display Connectors
1x HDMI 2.1, 2x DisplayPort 1.4a, 1x USB Type-C
No outputs
HDMI
+
-
DirectX
12 Ultimate (12_2)
12 (12_1)
OpenCL
2.1
2.0
OpenGL
4.6
4.6
Shader Model
6.7
6.5
Vulkan
1.3
1.2