GeForce GTX 1660 and Radeon RX 6900 XTX - video card comparison
GeForce GTX 1660
Radeon RX 6900 XTX
Architecture
Turing (2018−2021)
RDNA 2.0 (2020−2022)
GPU code name
Turing TU116
Navi 21
Market segment
Desktop
Desktop
Release date
March 2019
October 2020
Interface
PCIe 3.0 x16
PCIe 4.0 x16
Supplementary power connectors
1x 8-pin
2x 8-pin
Boost clock speed
1785 MHz
2435 MHz
Core clock speed
1530 MHz
-
Manufacturing process technology
12 nm
7 nm
Number of transistors
6,600 million
26,800 million
Pipelines / CUDA cores
1408
5120
Power consumption (TDP)
120 Watt
330 Watt
Texture fill rate
157.1
779.2
Memory type
GDDR5
GDDR6
Maximum RAM amount
6 GB
16 GB
Memory bus width
192 Bit
256 Bit
Memory clock speed
8000 MHz
18 GB/s
Memory bandwidth
192.1 GB/s
576.0 GB/s
Shared memory
-
-
Display Connectors
1x DVI, 1x HDMI, 1x DisplayPort
1x HDMI 2.1, 2x DisplayPort 1.4a, 1x USB Type-C
HDMI
+
+
DirectX
12 (12_1)
12 Ultimate (12_2)
CUDA
7.5
-
OpenCL
1.2
2.1
OpenGL
4.6
4.6
Shader Model
6.5
6.7
Vulkan
1.2.131
1.3