Load Averages on CPU

On the settings page under CPU it shows load averages. Are these a percentage of CPU usage? I am showing three averages. Currently running a Mac Mini with 2 cores / Intel Core i5 CPU @ 1.40GHz and 4 GB ram. At times i am recording up to six channels or watching a combination. The averages go up dramatically during these times. Debating on a Mac Mini with 2.6GHz Intel Core i5 Dual-Core and 8GB ram. Any suggestions?

From https://en.wikipedia.org/wiki/Load_(computing)

For example, one can interpret a load average of “1.73 0.60 7.98” on a single-CPU system as:

  • during the last minute, the system was overloaded by 73% on average (1.73 runnable processes, so that 0.73 processes had to wait for a turn for a single CPU system on average).
  • during the last 5 minutes, the CPU was idling 40% of the time on average.
  • during the last 15 minutes, the system was overloaded 698% on average (7.98 runnable processes, so that 6.98 processes had to wait for a turn for a single CPU system on average).

Mine are fairly consistently over 1. Sometimes a lot over 1.

Should I be looking to upgrade my hardware? Will it cause any significant problems running constantly over a load average of 1?

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