As I recall, most of the DMA issues with VIA chipsets were with older mobo/CPU conversations. I don't know if more recent chipsets suffer from that, but I would doubt it. It's not a huge problem as Linux tends to just work around it.
I was part of the conversation you were referring to, my system's an OLD Athlon 800 which I'll be upgrading to a Celeron 1.8 (400FSB) this weekend. My problems LOOK for all the world like a DMA bug, and the whole MythTV box seems awfully slow compared to my similarly spec'ed PIII-933 (running FC3 also), so I'm hoping I can at least eliminate that possibility as well as getting a much more powerful frontend/backend combo. Technologically there's very little difference between the 150 and 250 that hasn't already been mentioned here. However, as you're a newbie I'd say go with the 250 as it's by far the most common and well supported card. I use it myself with an NVIDIA video card, so I can use the 250 for encoding, the NV with XvMC for hardware decode of the MPEG2 streams and still come in around 25-30% CPU utilization even on this older hardware. I'll be interested to see what I can do with the Celeron. <grin> -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Ben Bargabus Sent: Tuesday, May 24, 2005 10:03 PM To: MagicITX; Discussion about mythtv Subject: Re: [mythtv-users] Newbie questions... <snip> > 1. I've not had trouble with the VIA DMA problem. I seem to recall > some talk that it could be an FC3 on VIA problem. Maybe I shouldn't > say that since I can't recall specifics of the conversation. YMMV FC3 as in Fedora? I'm a debian guy, I assume then that would be fine. > 2. You don't need a 350 on the backend. The decoding capability is a > frontend thing. I kind of thought that but wanted to check. What then is the difference between the 150 and 250? I went to their web page and it wasn't very clear. Thank you for your input!
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