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Author Topic: Usb 3.0 vs 2.0  (Read 7952 times)

madhatter01

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Usb 3.0 vs 2.0
« on: June 21, 2013, 08:46:48 PM »

I have been testing usb transfers. I have a 32Gb usb 3.0 drive. Using 5Ghz 802.11ac, connected at 585Mbps. Ok I have a 1 Gb test video, fat32 partition. When copying on usb 2.0 mode, I get 20-23Mbps. With usb 3.0 I get 6-10Mbps. Has anyone tried copying files down to a pc.
« Last Edit: June 21, 2013, 08:49:22 PM by madhatter01 »
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madhatter01

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Re: Usb 3.0 vs 2.0
« Reply #1 on: June 25, 2013, 01:37:25 PM »

Can someone else test this out? Ill post the hardwired tests later.
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FurryNutz

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Re: Usb 3.0 vs 2.0
« Reply #2 on: June 25, 2013, 01:44:49 PM »

How are you connecting to the drive via USB on the Router? Shareport or mapped drive in windows?

Does single mode N do the same thing on 5Ghz and 2.4ghz?
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madhatter01

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Re: Usb 3.0 vs 2.0
« Reply #3 on: June 25, 2013, 01:46:53 PM »

Just browsing the local network and pulling down the file.
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FurryNutz

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Re: Usb 3.0 vs 2.0
« Reply #4 on: June 25, 2013, 04:05:17 PM »

Mac Book Pro/OSX 10.7.5
Same room.
5 feet distance.

5Ghz Single mode N, WPA2/AES only, USB 2.0 selected using USB 3.0 1Tb USB drive.
6-7Mb Write
9-10Mb Read

5Ghz Single mode N, WPA2/AES only, USB 3.0 selected using USB 3.0 1Tb USB drive.
6-7Mb Write
9-10Mb Read

Not sure if the router was doing anything to the drive as it drive activity like was going before and during the actual xfers. Could be some router processing effecting some performance.

I can't test AC since the adapter I have doesn't work on MAC...yet.  ::)
No differences seen.
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madhatter01

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Re: Usb 3.0 vs 2.0
« Reply #5 on: June 26, 2013, 07:14:52 AM »

I will try to do a full test tonight and post.
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FurryNutz

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Re: Usb 3.0 vs 2.0
« Reply #6 on: June 26, 2013, 07:18:01 AM »

I'll connect up my DIR-865L in bridged AC mode to the 868L and retest.
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madhatter01

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Re: Usb 3.0 vs 2.0
« Reply #7 on: June 26, 2013, 07:18:33 AM »

Try hard wired.
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FurryNutz

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Re: Usb 3.0 vs 2.0
« Reply #8 on: June 26, 2013, 07:20:58 AM »

Should make any differences if wired. The USB 2.0/3.0 only seems to effect 2.4Ghz Radio from what I read about it.
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FurryNutz

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Re: Usb 3.0 vs 2.0
« Reply #9 on: June 27, 2013, 07:47:40 AM »

Ran a quick test with my 865L bridged to the 868L, Better speeds however no big differences in speeds between USB 2.0 and USB 3.0.  :-\

Only tested 5ghz AC mode.
USB 2.0 Selected
5Ghz AC DIR-868 using Bridged DIR-865L Gb LAN wired to Mac
12-14Mb READ
7-8Mb WRITE

USB 3.0 Selected
5Ghz AC DIR-868 using Bridged DIR-865L Gb LAN wired to Mac
12-13Mb READ
8Mb WRITE

« Last Edit: June 27, 2013, 03:22:19 PM by FurryNutz »
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madhatter01

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Re: Usb 3.0 vs 2.0
« Reply #10 on: June 27, 2013, 07:51:25 AM »

Tested last night hardwired. I am going to test 5 Ghz range later. I have most of my devices on 5Ghz.


This is copying from the Dir-868L down to my pc.
USB 3.0 PQI 32Gb

24Mbps USB 2.0
34Mbps USB 3.0
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FurryNutz

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Re: Usb 3.0 vs 2.0
« Reply #11 on: June 27, 2013, 08:44:59 AM »

I'll run this hard wired as well...
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FurryNutz

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Re: Usb 3.0 vs 2.0
« Reply #12 on: June 27, 2013, 03:22:49 PM »

Wired
USB 3.0 Selected
30Mb READ
17-18Mb WRITE

Wired
USB 2.0 Selected
19-20Mb READ
12-15Mb WRITE

I see there is a difference...
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FurryNutz

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Re: Usb 3.0 vs 2.0
« Reply #13 on: June 28, 2013, 10:58:09 AM »

I presume this is what could be expected behavior between the different USB speeds.  ???
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