Radeon RX 6900 XT and GeForce GTX 1660 Ti Mobile Refresh - video card comparison
Radeon RX 6900 XT
GeForce GTX 1660 Ti Mobile Refresh
Architecture
Navi / RDNA2 (2020−2022)
Turing (2018−2021)
GPU code name
Navi 21
TU116B
Market segment
Desktop
Laptop
Release date
December 2020
May 2019
Interface
PCIe 4.0 x16
PCIe 3.0 x16
Supplementary power connectors
2x 8-pin
-
Boost clock speed
2250 MHz
1590 MHz
Core clock speed
1825 MHz
-
Manufacturing process technology
7 nm
12 nm
Number of transistors
26,800 million
6,600 million
Pipelines / CUDA cores
5120
1536
Power consumption (TDP)
300 Watt
-
Texture fill rate
720.0
152.6
Memory type
GDDR6
GDDR6
Maximum RAM amount
16 GB
6 GB
Memory bus width
256 Bit
192 Bit
Memory clock speed
16000 MHz
16 GB/s
Memory bandwidth
512.0 GB/s
384.0 GB/s
Shared memory
-
-
Display Connectors
1x HDMI, 2x DisplayPort, 1x USB Type-C
1x DVI, 1x HDMI, 3x DisplayPort
HDMI
+
+
DirectX
12 Ultimate (12_2)
12 (12_1)
CUDA
-
7.5
OpenCL
2.1
1.2
OpenGL
4.6
4.6
Shader Model
6.5
6.5
Vulkan
1.2
1.2