The maximum jitter of a device roughly describes how well real-time requirements can be met.. If a device has a maximum jitter of 100us, then it must be expected that an event is handled up to 100us too late.

Use:
sudo lshw
to show the installed hardware.

• Dell Tower OPTIPLEX 9010
  • ~30us max jitter
  • 2 x i7-3770 @3.4Gz

• IB908
  • ~100us max jitter
  • 2 x i7-4650U @ 1.7GHz

• Laptop Dell Latitude E5530
  • ~250us max jitter
  • 2 x i7-3540M @ 3.00GHz
• Laptop Dell Latitude E5540
  • ~230us max jitter
  • 2 x i7-4600U @ 2.10GHz