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Originally Posted by Marcel Risberg

The way I see it; computer processing power (CPU), or the lack of it, mainly causes latency issues - up to a certain point that is. The audio interface and its drivers as well as physical connection (eg Firewire / USB / PCIe) also affect latency as well as stability when the system or session gets heavily loaded.

Look at it this way: The system as a whole affect latency. Choose your components wisely and don't forget to be creative about it.

For example: A bigger session might require you to increase the buffer size / latency to be able to run on your machine. A smaller sized session might allow you to decrease the buffer which shortens the latency. Some times when I need to record something which requires a minimal buffer size but my session is to big for my machine to handle at a smaller buffer - I bounce my session with hundred tracks down to a two track session, record at ultra low buffer settings, and then import what I just recorded back to the larger session .. and voila.

This is a fairly decent article with pictures describing what latency is about:

http://www.presonus.com/community/le...-audio-latency

Thank you