Radeon RX 6900 and Radeon 660M - video card comparison
Passmark - benchmark score Radeon RX 6900 vs Radeon 660M
Radeon RX 6900
27641
Radeon 660M
6474
Radeon RX 6900
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
2105 MHz
1900 MHz
Manufacturing process technology
7 nm
6 nm
Number of transistors
23,000 million
13,100 million
Pipelines / CUDA cores
4608
384
Power consumption (TDP)
255 Watt
45 Watt
Texture fill rate
606.2
45.60
Memory type
GDDR6
System Shared
Maximum RAM amount
16 GB
System Shared
Memory bus width
256 Bit
System Shared
Memory clock speed
16 GB/s
System Shared
Memory bandwidth
512.0 GB/s
-
Shared memory
-
-
Display Connectors
1x HDMI, 2x DisplayPort, 1x USB Type-C
No outputs
HDMI
+
-
DirectX
12 Ultimate (12_2)
12 (12_1)
OpenCL
2.0
2.0
OpenGL
4.6
4.6
Shader Model
6.5
6.5
Vulkan
1.2
1.2