I see you pulled the usual Swordmaker trick of putting words in my mouth to suddenly qualify my statement so that you can try to prove your point; I never said what size iPhone, now did I?
But let's just take a look anyway... With a transfer rate of 480 Mbps, you could copy 8 GB in about 20 seconds, and 16 GB in about 40 seconds.
I know I've seen close to that sustained rate with Ubuntu and Win 7; is the iPhone too slow to allow those kinds of transfer rates?
Never used an IPhone huh? Theoretical and real are two different things.
No, Puget, I agree, you did not say what size iPhone... but there was no need.
And, I would challenge your claims... 8 GIGABYTES in 20 seconds??? 16 GIGABYTES in 40 seconds? Over a USB cable? No way! You claim is Bull Sh!t on ANY SIZE iPhone!
You say you've seen "...close to that sustained rate with Ubuntu and Win 7..." Then, if you are implying that mythical 8GIGABYTES in 20 seconds, Puget, I have to call that a lie.
Your own link and you state that the USB 2.0 transfer rate is 480 Megabits per second... divide that by a factor of ~12 (you need word start and stop bits) to get MegaBYTES per second... Theoretically, and Practically, we are looking at ~40 MegaBytes per second of actual data... but that's just practically, given ideal conditions and connections.
Consider this from your own link, AGAIN:
4. How fast is USB 2.0?
USB 2.0 has a raw data rate at 480Mbps, and it is rated 40 times faster than its predecessor interface, USB 1.1, which tops at 12Mbps. Originally, USB 2.0 was intended to go only as fast as 240Mbps, but in October 1999, USB 2.0 Promoter Group pumped up the speed to 480Mbps.As far as we know, effective rate reaches at 40MBps or 320Mbps for bulk transfer on a USB 2.0 hard drive with no one else is sharing the bus. Flash Drives seem to be catching up too with the some hitting 30MB/s milestone. For all we know, USB interface could become become the bottleneck for flash drives as early as 2008.
Additional notes from Alex Esquenet - our engineer friend based in Belgium: "A fast usb host can achieve 40 MBytes/sec. The theorical 60 MB/sec cannot be achieved, because of the margin taken between the sof's (125 us), so if a packet cannot take place before the sof, the packet will be rescheduled after the next sof. On top of that, all the USB transactions are handled by software on the PC. For instance, a USB host on a PCI bus will send or receive the data via the PCI bus; the stack will prepare the next data in memory and receive interrupt from the host."
Let's analyze this further... the authoritative source says that the effective rate is 40MegaBytes per second... but let's go with the theoretical maximum of 60Megabytes per second. How long would it take to transfer just 1 GigaByte of data over a USB 2.0 cable??? About 17 seconds. To get your 8 GigaBytes, it would take over two minutes... at that unachievable theoretical maximum transfer rate. In the real world, it would take about five minutes; for a 16 GigaByte unit: 10 minutes; for a 32 GigaByte, 20 minutes or so... of course, assuming they were full to capacity and you were copying everything including pictures of old Aunt Cassie's cat.
The more you talk, the less I know you know... and the less I think you are an engineer in software or hardware for computers.