Polycom PVX Supplementary Manual page 2

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...
AVerMedia AVerTV GO 007 FM Plus PCI
Creative WebCam Live! Motion
Creative WebCam Live! Pro
GlobalMedia iREZ KD 1394
GlobalMedia iREZ K2 USB 2.0
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
Pro
Logitech QuickCam Pro 4000
Logitech QuickCam Pro 5000
Logitech QuickCam Fusion
Note that, as of driver version
9.0.2, the Logitech QuickCam
Fusion audio echo canceller
appears to add delay and
introduce audible artifacts into the
audio.
P/N 961398-04030
Driver version 9.5.0
P/N 961240-04030
Driver version 8.4.1
Driver version 7.3.0
Driver version 8.4.8
Driver version 9.0.2
Driver version 9.0.2
Driver version 9.0.2
Uses this CPU load
level...
Low
High
Medium
Low
Medium
High
Medium
Low
Low
Medium
Low
Medium
Note: If the Logitech
Audio Echo
Canceller (AEC) is
enabled, select
High.
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