Windows 11 hardware requirements made a mockery of by an Intel Pentium 4 processor
As the screenshots below show, Microsoft considers the Intel Pentium 4 661 a supported processor. Intel released the Pentium 4 661 in early 2006, with a solitary core to its name. Apparently, Microsoft forgot to add any Intel Family 15 (Netburst) SKUs in its unsupported processors list for Windows 11.
Hence, the PC Health Check tool sees that the Pentium 4 661 has a 3.6 GHz boost clock, which satisfies one of Windows 11's requirements. Curiously, the tool states that the Pentium 4 661 has two or more cores, even though it lists it as having one.
@Carlos_SM1995 has even got Windows 11 (Build 22000.258) running on a Pentium 4 661. Supposedly, Windows Update still works too, highlighting the ridiculousness of Microsoft's overtures regarding Windows 11 compatibility.
Windows 11 final (Build 22000.258) running on Intel Pentium 4 (11m4s video)
(Score: 0) by Anonymous Coward on Wednesday October 20 2021, @12:14PM
Yes, this has been possible for years. It runs every game except for three : Tarkov, Valorant, and Rainbow 6 Siege.
It's not particularly convenient to set up, but don't listen to the FUD about performance. It's within 5% of native. WINE usually matches native performance, sometimes even running faster, but WINE has a lot of bugs and it frequently doesn't work. Proton makes it easier, but lots of games still don't work.
The biggest problem with VM gaming is that you will be better off having two GPUs (one for the host and one for the VM), because while I have done it with a single GPU, it is much more useful with two. But only one of them has to actually be high performance, the other one just has to be able to drive your monitors. If you only have one monitor, an integrated GPU is good enough.
Check out r/VFIO for more information.