[mythtv-users] picking a new CPU

[Andreas]

Am Mittwoch, 19. März 2008 02:32:13 schrieb Henrik Beckman:
> Hi,
> I´m become CPU limited on my combined back/frontend, with 0.21 I´ve
> switched from linear to yadif deinterlacing.
> Yadif 2x is to much
>
> This is what I have,
> 2,6Ghz P4 with HT.
> 2GB RAM
> HDD0 250GB for system and mythvideo
> HDD1 500GB for mythtv
> Nova-t 500
> PVR-150
> 6200 graphics
>
> I have a 3,2+ AMD and a Nforce motherboard, 6600GT, but I´m unsure if it
> has enough CPU to handle what I want.
> I want to be able to run Yadif 2x for SD TV and _preferably_ also for HD,
> HD is 720p but bandwith is similiar to 1080p.
> Also I want CPU left to handle comskipping and recording two shows while
> watching, with a bit of overhead so I can
> take advantage of faster disks in the future.
>
> So should I,
> 1)Keep running my P4 and wait for things to settle down and prices to
> drop. 2)Switch (back) to my AMD 64 system.
> 3)Buy a 8400, memory and motherboard.
> 4)Buy a Q9300, memory and motherboard.
>
> My case is an antec fusion but I don´t think that I will be satisfied
> with 2 disks forever.
>
>
> /Henrik

Henrik,
I have a P4 3.0 GHz as a frontend only, and while it can display 720p/1080i 
just fine (did not test 1080p), any deinterlacing of the 1080i content 
pushes it over the edge and playback gets jumpy.

Another frontend with a 3.2 GHz Pentium 4 does deinterlacing with kernel and 
linear blend, but not with yadif or greedyh.

Then I have a backend AMD BE-2300 CPU. Just for testing I installed the 
frontend and connected a monitor. It plays smoothly even with yadif and 
also with greedyh, but can't handle yadif2x or greedyh2x.

The testing was all done with source material broadcast in the US, meaning 
all HD is actually in MPEG2, not H264.

-- 
Gruß
Andreas