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Quad G5 USB...

Any input on whether the USB is faster on the Quad G5 than it is on the Dual G5? The tests I have done show that the Dual 2.5Ghz can handle less packets per microframe than the powerbook or mac mini. I believe somebody said this had to do with the hyperthreading. However from the Apple website it looks like this area might have been improved, anybody know if this allows the USB Host Controller to allow as many packets/microframe as it does on the mini and PB?

From the Apple website:

"Serial ATA, FireWire, USB, audio, and wireless technologies are integrated through two bidirectional 800MHz HyperTransport interconnects for a maximum throughput of 1.6 GBps, providing ample throughput for a host of peripheral devices"

Thanks!
Juan
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