No, Ryzen 5 1600x is incompatible with Windows 11. Ryzen 5 1600x is not in the AMD processor list supporting Windows 11 because Ryzen 1000 series is not supported on Windows 11. But if you want to run Windows 11 on Ryzen 5 1600x based computer, then keep reading this article which will tell you how to install Windows 11 on unsupported Ryzen 5 1600x.

Why does Ryzen 5 1600x not support Windows 11?
The reason why Ryzen 5 1600x is not supported Windows 11 is that there are strict requirements for Windows 11. In order to improve the Windows 11 security and performance, Microsoft has tested lots of hardware and marked those processors which have higher hardware crash rate than the baseline hardware crash rate on the computer as the incompatible processors to run Windows 11. Because they have poor performance on Windows 11. Besides the processors, Microsoft has other hardware requirements for Windows 11.
- Processor: 1 GHz or faster with two or more cores on a compatible 64-bit processor.
- Memory: at least 4GB RAM.
- TPM 2.0: A TPM 2.0 chip is the minimum system requirement for Windows 11.
- UEFI: UEFI is a tangible electronic component with embedded software instructions BIOS. Windows 11 needs UEFI system firmware with Secure Boot.
In other words, if you want to run Windows 11, not only the processor but also the merry, TMP chip and UEFI should meet the Windows 11 requirements.
How to install Windows 11 on Ryzen 5 1600x?
Just as mentioned above, Ryzen 5 1600x processor is incompatible with Windows 11. But there is a way to install Windows 11 on unsupported Ryzen 5 1600x. However, there is a price to pay to bypass these restrictions of Windows 11 requirements. Those computers which do not support Windows 11 will not receive the security update from Windows 11. Therefore, the business edition users are not recommended to install Windows 11 on unsupported computer.
If you do not mind, you can read the detailed steps in the article: How to Install Windows 11 on Unsupported PC?
Conclusion
Ryzen 5 1600x does not support Windows 11. It seems that Microsoft will not update the AMD processor list supporting Windows 11 because those unsupported processors have a poor performance on Windows 11. However, you can perform a clean install of Windows 11 on unsupported PC.