[Openchrome-users] CN400 vs. CN700 vs. next best option?

[Peter Carmichael]

On Sun, 30 Nov 2008 16:08:03 +0100, "Thomas Hellstr?m"
> CN700 is a strange chip with a less advanced video engine than CN400. 
> Above other things this means that the XvMC driver's don't send commands 
> to the mpeg engine using the AGP command stream and they have to do 
> polling waits for the mpeg engine which consumes a lot of CPU.
> 
> /Thomas
> 

Thank you very much for explaining that what I was seeing has some
basis.

With that insight and having got CN700 working in both xine and mythtv I
can see that a CN700 board is viable for all my intended SD needs.

I'll get over having had CN400 successfully decoding 1080i mpeg2 with
openchrome.  It is just an academic exercise as there is never going to
be much HD media in mpeg2 format.  As I understand it, the CN400 mpeg4
assistance is only for h263, so it is irrelevant also.

Therefore I am happy to start using CN700 boards.