The V20 is my favorite classic CPU. Particularly, NEC's strategy was wonderful: maintain perfect compatibility with the 8088 and still bring more capability, higher speed, and maintain cool operation. Then, they executed on that strategy well.

I purchased one of these for my Tandy 1000SX but didn't notice a performance boost when playing Zak McKraken, not that it was terrible before (turning off scrolling is a must). I think the next step is looking at replacing the clock on the motherboard with something to push a bit faster. Maybe to 10 MHz via https://github.com/reeshub/pc-sprint.