How Many Recording Tracks Can an iBook Handle?

I have an iBook (specifications below) and have my eye on one of these when it is released http://www.alesis.com/product.php?id=96 for recording in Logic.
How many tracks could my iBook record simultaneously at 44.1 MHz & 24-bit with no extra CPU load - e.g Audio Unit effects. Latency is not an issue, I can turn it up as high as it wants as I will not be software monitoring.
Would I be able to use all 8 analogue inputs without recording clicks? How do other people's iBooks perform with FireWire multi-tracking?
Regards,
Andrew
iBook G4   Mac OS X (10.4.3)   1.33 GHz - 512 MB RAM - 40 GB HD - ATI Radeon 9550

Well that's what mine can do, easily. Recording onto a lacie firewire drive I should add, although performance from the built in drive isn't unbearable.
I'm not making it up, I can easily do that on my powerbook. I've done many sessions recently with that sort of track count, not so much the 42 channels but that was just a test of my HD.
I can easily do a session with about 24 channels at 96khz. Obviously everyone's idea of a few versus a lot of plugins is different but say a couple on each channel, maybe a reverb and delay too.

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