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U2713H Card Reader Speed
Anyone tested the read speed on the U2713H card reader with CrystalDiskMark or ATTO ?
I have some SanDisk Extreme Pro SDHC 95MB/s card and like to know if it can handle those kind of speeds
Klas bell
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July 24th, 2013 01:00
Are you saying that the USB 3.0 Card reader on the side of the screen can move files to the PC with 5GB/s !!!
DELL-Andrew F
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July 24th, 2013 01:00
Hi Klas bell,
Good day and welcome to the community!
Thanks for reaching out to us. The U2713H monitor can handle a maximum 5GB/s of Super Speed transfer rate with a power consumption of 4.5 W. You can refer to this link http://dell.to/19hgyKq as a reference. Hope this helps. For anything else, just let me know.
Thanks and Regards,
Klas bell
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July 24th, 2013 19:00
The card reader on the U2711 (USB 2.0) do about 21-22 MBYTE/sec in both read and write, is the U2713H any faster with it`s USB 3.0 interface ?
DELL-Chris M
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July 24th, 2013 23:00
No. There is some confusion going on here.
In the U2713H User's Guide, page 19, it states:
Super-Speed 5Gbps 4.5W
High Speed 480Mbps 4.5W
Full Speed 12Mbps 4.5w
Notice it states 5Gbps, not 5GB/s.
Gbps = Gigabit per second
GBps = GigaByte per second
1Gbps = 0.125GBps
5GBps = 0.625GBps
Klas bell
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July 25th, 2013 10:00
This is like talking to a wall, I doubt the card reader is capable of 5Gbps read speed, anyone else understand my question???
andrewharley89
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July 25th, 2013 11:00
"Chris M" did understand the question and gave you the answer.
The Card reader is USB 2.0 which has a transfer rate up to 480Mbps (Mega Bits per second) which equals 60MBps (Mega Bytes per second). If your card can transfer at a speed of 95MBps than the USB 2.0 Card Reader would bottle-neck your card by 35MBps.
95-60=35
*Note that rated speed are "maximums" and not guaranteed to always run at that speed. Your card can transfer "Up To" 95MBps but won't always. It depends on the 'health' of the NAND in the card among other factors.
The 5Gbps USB 3.0 ports have a transfer rate of 640MBps
Remember Bits (b) are different from Bytes (B)
andrewharley89
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July 25th, 2013 12:00
Because I'm blind... I only noticed "USB 2.0/3.0 High Speed Device (USB High Speed Device compatible" and interpreted that to mean it uses the the same USB 3.0 connection to the PC for the ports to carry the cards readers *interpreted* USB 2.0 connectivity.
Well, with that I guess you have come up with the answer on your own ^_^ for 5Gbps = 640MBps and your card is up to 95MBps which means the monitors connection is more than capable of supporting your cards full speed, if anything your card will be slowing it down ;)
Sorry for the confusion, I scanned over the manual and didn't see that part at all, I honed in on the "Connection Type" and interpreted it for what I recognized.
Klas bell
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July 25th, 2013 12:00
So the card reader in the U2713H is USB 2.0 only, but the USB ports are USB 3.0 ?
why does it then say on page 21 ?
"SD Memory Card support USB 3.0 speed"
Klas bell
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July 25th, 2013 13:00
Well, there is NO way the card reader supports FULL USB 3.0 speed, but If only someone with a fast memory card and a USB 3.0 PC could test the speed... anyone???
Klas bell
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August 2nd, 2013 10:00
Can anyone please test this! if it`s faster then 37-38 MBYTE/s then you know it`s atleast not a USB 2.0 card reader