I ran some test with MC 7.0 and a BMD Ultrastudio SDI on a notebook an realized that i got different CPU loads while capturing from different HD-SDI sources.
source 1 was the output of a  adrenalin hardware with installed HD boards.
source 2 was a sony video mixer (DFS-800) 

what's the difference? 8 vs 10 bit??

all other settings were the same 1080i25. I ran the test using different codecs too (185 / 185X / 120) - same result.

regards - M.

Moses.M:

what's the difference? 8 vs 10 bit??

8-bit means coding of Y/Cb/Cr is with 8 bit per code-word, which gives 256 different luma-/color values.

10 bit means codeing of Y/Cb/Cr is with 10 bit per code word, which gives 1024 different luma-/ color values.

Probably, the CPU load with 10 bit is higher than the one resulting from 8 bit.

Joachim

 I know what 8 and 10 bit mean - I want to KNOW whether it 'causes the higher CPU load...