[mythtv-users] New Backend Hardware

[Eric Yanush]

Hi,

I am looking to assemble a new mythtv backend, to replace my old P3 backend, used with a pvr-150 and local cable, as I have made the move to HD :D 
I am getting my tv from my isp, IPTV, and can capture it directly over ethernet. Currently the SD channels are mpeg2 streams, and the HD are h.264, although they tell me they are making the move to all h.264 in the near future. 
This new machine will be backend and frontend until I can use my apple tv with broadcom crystal hd as my main frontend. 
I was wondering if anyone had an suggestions on recommended hardware for the new machine? It will be able to utilize 4 streams simultaneously over 2 ethernet connections, and I was wondering what kind of processor and ram requirements I would need to be able to deal with comm-flagging and transcoding, I would like to be able to be watching one stream, possible live tv, while being able to record and comm-flag one possible two more. 

I was considering a motherboard with a built in nvidia 8200 to make use of vdpau in case it ever does find itself pulling double duty again with 400W power supply, paired with an athlon II X2 240 (2.8ghz) dual core, and 2gb of ram. Along with a 160gb pata drive I have kicking around, for the OS drive and a 1tb WD caviar black for recordings. 

Should I be looking to make any adjustments to this?

Thanks,

Eric