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freddiecable

macrumors 6502a
Original poster
May 16, 2003
656
196
Sweden
well - it is magically stupid that I get 5 MB/second when trying to send 11 GB film from my iPhone 7+ to my MBP 2017 USB-C with lightning - USB-C-cable.
 

upandown

macrumors 65816
Apr 10, 2017
1,292
1,296
Yup. And what's worse is Apple touts the ipad pros to be USB3. Except none of the cables are USB3. Pretty hilarious
 

Outrigger

macrumors 68000
Dec 22, 2008
1,765
96
well - it is magically stupid that I get 5 MB/second when trying to send 11 GB film from my iPhone 7+ to my MBP 2017 USB-C with lightning - USB-C-cable.
Lightning is USB 2 because the bottleneck is in the iphone/ipad's slow hard drive speed. With USB3, you're not going to see much of a difference so hence Apple is still using USB2.
 

huschpuscheli

macrumors regular
Jul 28, 2011
170
64
Lightning is USB 2 because the bottleneck is in the iphone/ipad's slow hard drive speed. With USB3, you're not going to see much of a difference so hence Apple is still using USB2.
i don't think this is entirely correct. usb3 uses 9 pins while lightning provides only 8. the exception to this are the ipads (pro?) that support usb3 with this one dongle (not sure which one). those ipads are equipped with a lightning port that has 16 pins (8 on one side, 8 on the other). all iphones to date with lightning, including the latest 8 and 8 plus, only have 8 pins. and as mentioned above, none of the cables with lightning connector on one end have support for usb3 because they only contain 8 wires for those 8 pins.

here's a quote from changguangyu where you can see the difference in the number of pins in iphones (left pic; 8 pins) and usb3-ipads (right pic, 16 pins):
I went to the Apple store and find that iPhone 8 and 8 plus have same 8pin lightning port as iPhone7 ..
:(
iphone7-不支持usb3-0-jpg.720025
ipad-pro-12-9支持usb3-0-jpg.720026
unless apple uses some fancy non-usb-compliant trickery to get usb3 out of 8 pins/8 wires even though the standard uses 9, or unless they equip all iphones and ipads with those 16 pin ports AND start producing appropriate 16 pin/16 wires cables, we are still stuck with usb2. i wonder if the iphone x will feature usb3.
 

Outrigger

macrumors 68000
Dec 22, 2008
1,765
96
i don't think this is entirely correct. usb3 uses 9 pins while lightning provides only 8. the exception to this are the ipads (pro?) that support usb3 with this one dongle (not sure which one). those ipads are equipped with a lightning port that has 16 pins (8 on one side, 8 on the other). all iphones to date with lightning, including the latest 8 and 8 plus, only have 8 pins. and as mentioned above, none of the cables with lightning connector on one end have support for usb3 because they only contain 8 wires for those 8 pins.

here's a quote from changguangyu where you can see the difference in the number of pins in iphones (left pic; 8 pins) and usb3-ipads (right pic, 16 pins):

unless apple uses some fancy non-usb-compliant trickery to get usb3 out of 8 pins/8 wires even though the standard uses 9, or unless they equip all iphones and ipads with those 16 pin ports AND start producing appropriate 16 pin/16 wires cables, we are still stuck with usb2. i wonder if the iphone x will feature usb3.

I'm not talking about the pins, but the transfer rate of the hard drives Apple uses in its phones and ipads. Just because its SSD doesn't mean its on par with the ones used in their laptops. Look at the speed of current run of the mill SD cards, they're really slow.
 

huschpuscheli

macrumors regular
Jul 28, 2011
170
64
I'm not talking about the pins, but the transfer rate of the hard drives Apple uses in its phones and ipads. Just because its SSD doesn't mean its on par with the ones used in their laptops. Look at the speed of current run of the mill SD cards, they're really slow.
i don't think so. toshiba's current nand chips (emmc and ufs) are much faster than usb2's 40MB/s. so the bottleneck is after the iphone's nand memory (source i. e.: https://toshiba.semicon-storage.com/us/product/memory/mlc-nand/emmc.html).
 

freddiecable

macrumors 6502a
Original poster
May 16, 2003
656
196
Sweden
I can transfer 40MB/second over wifi/airdrop.

From my point of view it is more about - how can we still be having these slow transfer speeds with cable? In the year 2017 with 256GB HD-space in phones.
 

huschpuscheli

macrumors regular
Jul 28, 2011
170
64
I can transfer 40MB/second over wifi/airdrop.

From my point of view it is more about - how can we still be having these slow transfer speeds with cable? In the year 2017 with 256GB HD-space in phones.
that's the point i was trying to make. it's not the memory's speed but the apparent lack of a speedy usb controller and an appropriate lightning port with enough pins to put usb3 through. oh, and the cables need to be updated. so how can it be that we still have just usb2? i guess the answer is that apple wants to save money.
 
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