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Technology Stocks : AUTOHOME, Inc

ATHM 24.08

-3.1%

Nov 14 9:30 AM EST

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To: Jing Qian who wrote (5892)	3/3/1999 3:20:00 AM
From: Jay Lowe	Read Replies (1) of 29970

1. If you don't have a NIC in your machine, you want one for other reasons. 2. USB 1.0 has a top effective bandwidth around 7 Mbps ...when you later add other USB peripherals they will contend for this. 3. Not all USB silicon in PCs is good yet ... your results may vary 4. Not all PCs with USB ports have the ports actually connected to the back panel (yikes, it's true!) 5. USB is a high-maintenance serial protocol ... chit-chatting with USB takes about 10x the processing power of typical NICs 6. PC interaction with the USB Host controller is polled, as I remember, instead of interrupt-driven. You may never notice the difference between a NIC and USB, but the NIC rocks and the USB will be chokin' trying to keep up with cable. Intel recently announced USB 2.0 ... they're talkin 100-200 Mbps ... now that starts to get interesting ... still have to make the host controllers more intelligent so they can function more autonomously and not have to talk to daddy every few bytes.

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