Actual Good Hardware for a reasonable price. Or gimmick control schemes like the ps vita, Wii (U) or occasionally the Switch. I loved the first “The World Ends With You” on the NDS, tried emulating it, but the control scheme without a touch screen and the physical buttons are so weird, I bought a 3DS to relive that masterpiece since my DS Lite died.
It’s not. Like the commenter above said: It’s a fraction of the task at hand. Especially when you design the rest of the system to run only if necessary. Context Switches are what? like 50 CPU Cycles? Store Registers, Store TCB, Load other TCB and load other register states jump back to PC. Maybe some other OS Shenanigans, but that’s basically it.
Now Imagine complex calculations on a 25-Dimensional Matrix.