Windows 10 Professional OEM vs Retail
I am having difficulty understanding why anyone would purchase the retail version of windows when the OEM version does not seem to be very different. For example, at the time of writing this, I see the difference on amazon to be $130 for the OEM license and $190 for the retail license.
After doing quite a bit of research, it looks as though OEM can only be installed one time, on one machine, and that this is the real advantage of the retail version, that it can be reinstalled multiple times.
Here's the catch. OEM copies CAN be reinstalled on different hardware. Microsoft even has support links on their website explaining how to do this. The key is to make sure that the license is fully deactivated and that only one copy of the OEM license is active at any given time. Link
If I am buying Windows 10 Professional for a small business and they need 8 copies for example, why would I buy an OS that is $60 more expensive per copy when there does not appear to be any obvious difference between them (other than maybe the OEM version may be more of a pain in the rear in the unlikely scenario that I need to swap out a failing motherboard).
Solution 1:
A few key things that the Terms and Conditions for an OEM key states that:
OEM versions do not offer any free Microsoft direct support from Microsoft support personnel
OEM licenses are tied to the very first computer you install and activate it on
OEM versions allow all hardware upgrades except for an upgrade to a different model motherboard
OEM versions cannot be used to directly upgrade from an older Windows operating system
With any key, I have never used services from option 1. However, I have bypassed option 2. and 3. I just had to call a number, talk to someone and I had to enter some sort of validation. It's been a while since I've had to do that, but the process wasn't too complicated. They did ask why I replaced the board, and each time it was due to the board failing. All of the times I did this, I worked at a PC repair shop. I'm not sure what they would have said if it was just a board to upgrade to something new.
Somewhere in the Terms and Conditions, there is a limit to how many times you can reactivate an OEM key. I don't know what the magic number is.
As far as option 4. goes, I think the only time that worked well without having to get a new key is when Microsoft was basically letting anyone and everyone upgrade to Windows 10.
I myself got the Windows 7 retail version when I built my PC several years ago so I wouldn't have to worry about reactivating if I changed hardware. With that one purchase. While on Windows 7, I had to RMA a motherboard once. I also took advantage of upgrading to Windows 10. I've upgraded my CPU and motherboard since then and had no problem with reactivation.
To me, it was worth the extra bit of money to avoid some potential hassle, or possibly being denied a reactivation.
Here's a link with some easy to read OEM Software Licensing: Rules & Restrictions