This is sort of an addendum to my recent Silpheed review. Just a quick video I made while working on my review, showing my testing of Silpheed on my 4.77MHz IBM PC upgraded with 640K RAM.
I mentioned in the video that while you can play it on any PC with 512K RAM and a CGA card, you really need an 8MHz 286 AT-class machine or better to run the game at full speed. While it’s certainly playable on an IBM PC/XT range machine, I’d really recommend the AT (or even a low-end 386) machine to get the best results and a constant frame rate.
Still, for the amount of action on-screen and the filled polygonal graphics being used, it’s impressive to see this run a 4.77MHz PC. The introduction “attract sequence” is what suffers the most, taking craptons longer than it should to display the whole thing. Still, it’s all possible on the IBM PC with no hard drive and a simple upgrade in RAM and that’s quite awesome to me.