How can I upgrade my Pc 4 better 1964 use

u should go for a new cpu. its not needed for 1964 but try to hav around 1Ghz. slow cpu makes slow emulation makes jerky sound.

I believe rice is on a 600 mhz computer.. I don't think the requirements are that high for 1964 like they are for other emu's like pj64 and apollo or tr64. Try closing all programs running in the background and give your computer a fresh boot. also toning down your video card settings should help. If you don't have them, get the latest Nvidia video card drivers (nvidia.com). Also DirectX 8.1 might be a solution if your using an older version.

Also, using azimer's old sound card driver seems to help speed things up

I am also on a 600 MHz machine. It is plenty fast. If you get choppy sound, try increasing the audio buffer size and/or disable video sync. with your 133 MHz bus, you should do even better, assuming your bus is running at that speed

schibo