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More on Cannon PCs Six CableCARD PC

On Friday Cannon PC demoed a system recording from six CableCARDs all at once, while playing back a recording and the system didn’t skip a beat.  This was demoed in the YouTube video, but I got some higher resolution screenshots of Media Center showing the six streams at once.

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Given the system resources that they had to spare, what do people think the max number of tuners would be?  Considering local playback most likely added from 5-10% on ~35% of the CPU being used, I think this shows that processing speed is no longer a bottle neck for Media Center PCs.  So the question is which dies first, USB throughput or the hard drive(s)?

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Published Sun, Jun 22 2008 10:21 by chrisl
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# Project HTPC » Blog Archive » links for 2008-06-22

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Sunday, June 22, 2008 3:30 PM by Project HTPC » Blog Archive » links for 2008-06-22

# re: More on Cannon PCs Six CableCARD PC

USB throughput from the tuners or throughput to a USB hard drive?

In either case, that should be pretty easy to calculate. (I will let someone more bored than I actually do the math. :-) )

Sunday, June 22, 2008 4:35 PM by Clifton Griffin

# re: More on Cannon PCs Six CableCARD PC

Chris,

Good point about the processing power. Those 6 tuners would be more expensive than the entire pc.

Hopefully pricess will start to come down.  

Sunday, June 22, 2008 7:38 PM by Kevin

# re: More on Cannon PCs Six CableCARD PC

Yawn - old news - I have been running 8 dvb-t tuners for over 12 months... Its the hdd that craps out first... Raid0 helps solve the problem

Monday, June 23, 2008 3:07 AM by Keith

# re: More on Cannon PCs Six CableCARD PC

What's the bitrate of those DVB-T broadcasts?

Monday, June 23, 2008 6:41 AM by chrisl

# re: More on Cannon PCs Six CableCARD PC

You should be able to get ~16 ATSC streams recording at once.

Each stream is roughly 20Mbps / 8bits = 2.5MBps

Providing that the hard drive is only being used for recording/playback (no OS, etc.), 16 streams would be 40MBps.  Most modern drives should be able to handle that.

Monday, June 23, 2008 7:29 AM by digitalfreak

# re: More on Cannon PCs Six CableCARD PC

I'd rather see how long that system lasted with all 6 tuners actually inside that chassis.  ;)

Saturday, July 19, 2008 4:03 PM by Chris