Here's how to choose the hardware for your AI Server in V20 U10.

The performance of the 3CX AI Server can be measured in several ways. However, the two most important factors are:

  • Average Speed Factor (how many minutes of recordings can be processed in ONE minute of AI Server time); so a Speed Factor of 10x means that the server can process 10 hours of recordings in one hour of machine time
  • Average Round Trip Time (how many seconds does my average recording take from just after delivery to the AI Server, to job completion just before sending results back to the PBX)

With the release of 3CX AI Server in Update 10 Alpha, we have run tests to gather pointers on these factors.

Keep in mind that Average Round Trip Time is directly affected by the average duration of call recordings and voicemails. We have worked with an average call recording duration of around 140 seconds and an average voicemail recording duration of around 30 seconds - which is what we have seen to be the all-round averages.

This may be different for particular lines of business, or for different call recording scopes. If you are recording people calling in for job interviews, for example, the average duration can be significantly longer; so the numbers may well be very different for your use case.

The order listed below in terms of which rig is slower/faster should remain correct, by and large.

In order of Speed Factor (fastest last):

  • 18x - MacMini M4 Standard 24Gb
  • 32x - Google g2-standard-4_NVIDIA_L4
  • 43x - MacStudio M4 Max 14-core 36Gb
  • 44x - Single RTX4060Ti 16Gb
  • 111x - Single RTX4090 24Gb
  • 226x - Dual RTX4090 24Gb

In order of Round Trip Time (fastest last):

  • 55s - MacMini M4 Standard 24Gb
  • 31s - Google g2-standard-4_NVIDIA_L4
  • 25s - MacStudio M4 Max 14-core 36Gb
  • 18s - Single RTX4060Ti 16Gb
  • 11s - Dual RTX4090 24Gb
  • 9s - Single RTX4090 24Gb

Please keep in mind that this is an early version of the new 3CX AI Server, and numbers can change as we make adjustments moving forward.

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