Polycom 3725-22724-003/A manual Determining the CPU Load for Your System, This device, level

Selecting Audio and Video Devices for Use with Polycom PVX

Determining the CPU Load for Your System

Polycom PVX is a CPU-intensive application. It was originally designed to accommodate the CPU requirements of third-party video capture devices, so that the total CPU load results in acceptable performance. As modern devices have become more capable in resolution and supported features, they have sometimes also become more CPU intensive. Using some of these devices can cause the total CPU load to surpass optimal levels. For these CPU-intensive devices, you can adjust the PVX CPU requirements to accommodate the device’s requirements.

The following table lists the CPU load levels for some of the video input devices supported by PVX. You will need this information to configure your device. If your input device is not listed here, refer to the information which follows this table.

This device...		Uses this CPU load
		level...
AVerMedia AVerTV GO 007 FM Plus PCI		Low
Creative WebCam Live! Motion		High
Creative WebCam Live! Pro		Medium
GlobalMedia iREZ KD 1394		Low
GlobalMedia iREZ K2 USB 2.0		Medium
Note that the GlobalMedia iREZ K2 USB 2.0 camera was
tested using quality setting B (the default setting). Higher
quality settings offer additional image processing capability,
but the increased load on the CPU may adversely affect
system performance.
Logitech QuickCam for Notebooks	P/N 961398-04030	High
Pro	Driver version 9.5.0
	P/N 961240-04030	Medium
	Driver version 8.4.1
Logitech QuickCam Pro 4000	Driver version 7.3.0	Low
	Driver version 8.4.8	Low
	Driver version 9.0.2	Medium
Logitech QuickCam Pro 5000	Driver version 9.0.2	Low
Logitech QuickCam Fusion	Driver version 9.0.2	Medium
Note that, as of driver version		Note: If the Logitech
9.0.2, the Logitech QuickCam		Audio Echo
Fusion audio echo canceller		Canceller (AEC) is
appears to add delay and		enabled, select
introduce audible artifacts into the		High.
audio.
		2