We are using PowerDVD Ultra 7.3 with patch 3104a applied. This patch fixed a lot of our issues with playback and brought PowerDVD up to the level we wanted and expected. We did, however, have difficulty disabling GPU acceleration with this version of PowerDVD, so we will be unable to present CPU only decoding numbers. From our previous experience though, only CPUs faster than an E6600 can guarantee smooth decoding in the absence of GPU acceleration.
Remember that these are average CPU utilization figures. Neither the AMD nor the NVIDIA high end parts are able to handle decoding in conjunction with the old P4 part. Our NetBurst architecture hardware just does not have what it takes even with heavy assistance from the graphics subsystem and we often hit 100% CPU utilization without one of the GPUs that support bitstream decoding.
clipped from www.anandtech.com
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