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Looper's Delight
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> Original USB - 12 Mbps > USB 2.0 - 480 Mbps > FireWire 400 - 393.216 Mbps > FireWire 800 - 786.432 Mbps > PCMCIA (PC Card) / CardBus, Type I or Type II (32 bit PCMCIA) - 132Mbps We've probably beaten this horse enough already, but just to make sure, you can't predict what the latency of these devices will be by looking at their maximum bandwidth. A FireWire 800 interface will not necessarily give you lower latency than a USB 2.0 interface. Depending on other factors, it may be slightly better but it certainly won't be twice as fast. The only reason you might need FireWire 800 rather than 400 is if you are doing massive multitracking. A solo performer looping a single stereo 44.1 Kbps signal will never get anywhere near the bandwidth limit of USB 1.0 let alone Firewire 400. That isn't to say that all USB 1.0 interfaces work as well as an RME 400. There are other important considerations like how well the OS handles USB and firewire devices and especially how well the device drivers are written. USB 1.0 devices have a spotty history. They are generally best avoided though I have an M-Audio Black Box that works just fine at 5ms latency. It's a crap shoot, though certain brands do tend to work more consistently than others. Jeff