PS3 Can Record TV and Play Games
… but will it do both at the same time?
commenter rjcc over on ps3blog.net makes a very, very good comment. there’s a reason the xbox 360 is a media extender and not a pvr. you can play games on your 360 while your media center is recording shows. they just playback through your network from your pc to the 360.
in the ps3’s case, what’s the point of having a dvr if it can’t record shows while you’re playing games?
and, if the ps3 does both at the same time? uh… that sucks. let’s do some math!
data rate of a compressed hd video stream: about 19 megabits per second.
that’s 2.375 megabytes of data written to the hard drive per second.
that’s 142.5 megabytes a minute.
that’s 8.35 gigabytes an hour.
so, a 120 gig ps3 hard drive can hold about 14 hours of compressed video.
ew… that’s not very much nor very effective for a shared device.
and, not only is the write pipe to the ps3 hard drive gonna suck when your game has to share bandwidth with your video being recorded, but, what the hell is compressing the video? that’s right! resources in the ps3 — the very same resources that play your game. (that assumes, of course, you’ve got a pure, uncompressed hd feed. more likely, you’ll already have a compressed cable or satellite feed coming in. that way, there’s just transcoding issues…)
so, compressing/storing video and playing a game at the same time? not so much. looks like you’ll just have to buy another ps3.
and, we won’t even mention that they can choose to not compress/transcode hd video. that’s somewhere around 417 gigabytes an hour…. heh.