Intel Xeon E5-1620 and E5-1650 processors are not compatible with Windows 11. Both processes were released in Q1 of 2012 and End of servicing updates were last released in 2020.
Windows 11 was released for the first time in October 2025. So, both processors are dated processor models in the Xeon range of Intel processors.
For validating this, you can check the list of Xeon processors compatible with Windows 11. You will find no reference for E5-1620 and E5-1650 processors on the Microsoft page.
For people running Windows 10 on Xeon E5-1620 or E5-1650 processors, there may be a bigger issue because Windows 10 becomes End-of-life in October 2025. Beyond October 2025, Xeon E5-1620 AND e5-1650 computers running on Windows 10 will be out of security update coverage.
We review the options available for Xeon E5-1620 and E5-1650 running Windows 10 below.
Get a new computer or processor/motherboard
It may be worth getting a new computer with preloaded Windows 11. This will cost more in the short term. But, it offers more value for the money spent over the next 5 years.
Alternatively, you may upgrade the processor and motherboard of your Xeon E5-1620 or E5-1650 based systems. This should make the computer compatible with Windows 11 operating system.
Being compatible with Windows 11 will imply full security update coverage until Windows 11 becomes end of life
Get Extended Security Updates for Windows 10
You may also choose to enroll in a paid subscription for Windows 10 Extended security updates. This is assuming you are currently running Windows 10 on Xeon E5-1620 or E5-1650 systems.
The Extended security updates will allow access to Windows 10 security updates for a period between 1 to 3 years.
However, it is a given thing that the cost of Extended Security Updates is reasonably higher than costs of a regular license.
From a cost benefit perspective, there is more value for money in upgrading the computer’s processor and motherboard.
Do nothing
For people who are unwilling to get a new computer, replace processor and motherboard or paid subscription to the ESU program for Windows 10, there is a possibility to continue running your computer as it is. This is not a secure solution because it poses significant risk to your computer’s security. It also renders all data to increased levels of risk.
However, for the record, it is important to understand that Xeon E5-1620 and E5-1650 systems on Windows 10 will not randomly stop working after 14 October 2025. Rather, your access to the security updates for Windows 10 will cease to operate.
Our recommendation
If possible, it is worth upgrading the processor and associated motherboard for Xeon E5-1620 or E5-1650 systems. Do consult a technician before you finalize this because there are tons of other hardware requirements to comply for Windows 10 installation and upgrades.
Buying a new computer remains the best option for a long term period of hassle free ownership.