I just gave my kids my old setup. A-Bit nf7-s v2,amd xp 3200+.
Both are meant to run @ 400mhz,yet I can run it with one stick of 333.
All I had to do was change,the ratio of cpu to ram and it ended up running at 400 mhz.Incidentally,it runs better now,than it ever ran for me. LOL