may be you know - does Pentium 4 3 GHz will be enough ?
Even 300MHz are enough. The CPU load is not a load that depends on CPU speed. It depends mainly on the current state of the driver which transfers the video data from the CPU over PCI without using bursts. Autonomous DMA should be possible, but is not yet finished.
do you mean the transfer of compressed (h264 or mpeg2) video data from dvb card to eHD ?
Goga