- If you're considered a "student" by any means, you probably have access to an institutional email address that gives you access to Azure for Students. Through the Azure site, you can download an ISO for any LTSC edition of Windows Server (including Datacenter) and get a valid license key. This is a great way of saving money and avoiding sketchy key resellers.
- Driver support is basic out of the box. The PC I used for Windows Server has an AMD graphics card, which normally comes with GPU drivers as soon as you install a consumer version of Windows. This doesn't happen automatically with Windows Server. When you download the GPU drivers from AMD, the installer will detect that you're running Server and error out, but you can tell Device Manager to install drivers from your C:\AMD folder and it will work fine (minus the fancy GUI control panel, which is arguably bloatware itself). Something similar should work for Nvidia cards.
- Normal Win32 applications work great (I used Chrome, Office, IntelliJ, and a number of other everyday apps and they worked perfectly). However, you don't have access to the Windows Store, so installing UWP applications that aren't part of the base system (i.e., anything other than Settings, pretty much) is a pain.
I suspect power management is also poor.
On which version? I'm running Server 2016 (Datacenter) with an Intel iGPU, and I don't recall having to do anything special to get it working.
Another issue I've run into was Server 2016 not having trackpad drivers for a Dell laptop's I2C bus/trackpad.
I felt vindicated when 98 did the same with billg at COMDEX (or was it CES?).
NT4 had an architectural flaw that was introduced to make some people happier - many device drivers started to run in kernel space and their bugs were able to crash the whole machine, unlike 3.5, where a crashed driver could be reloaded.
But you can't run any game because DirectX. I've copied some files from Windows98 and was manage to use some games in windowed mode.
The qualification is to prevent random crashes; it's not really needed, but it is hard to impossible to disable last I checked.
You may also find power management drivers don't install.