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USB 3.0 Question

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May 13, 2013 6:32:12 AM

Why is the transfer speed the same on the USB 3.0 port as its on the USB 2.0 port?? Its written on my flash drive that its 3.0 but the transfer speed is the same as on the 2.0 port (if anyone asks, its a Patriot SuperSonic 32gb flash drive). Idk what the fuss is about those USB 3.0 ports when it isn't faster in transfering files to a flash drive. I also borrowed a USB 3.0 flash drive from my friend to see if mine is a rip off but its the same. Is something wrong with my motherboard or is it supposed to be like this?

More about : usb question

a b V Motherboard
May 13, 2013 6:37:13 AM

what speed are you getting?

and have you installed the usb 3.0 drivers?
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May 13, 2013 6:45:02 AM

mcnumpty23 said:
what speed are you getting?

and have you installed the usb 3.0 drivers?


Motherboard drivers are installed. well how should i know the speed, all i know is that it took 20 minutes to copy a 15gb file to the flash drive.
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a b V Motherboard
May 13, 2013 6:48:29 AM

in the transfer box click more details to see the speed
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May 13, 2013 7:16:38 AM

mcnumpty23 said:
in the transfer box click more details to see the speed


150mb/s
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a b V Motherboard
May 13, 2013 7:22:37 AM

150 is actually seriously fast for a flash drive
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May 13, 2013 7:28:45 AM

mcnumpty23 said:
150 is actually seriously fast for a flash drive


But how could it be that the transfer speed is the same on the USB 3.0 and 2.0?
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a b V Motherboard
May 13, 2013 7:38:00 AM

look at the transfer speed when you do usb 2.0

would have thought about 30mbs for usb 2.0
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May 13, 2013 7:48:31 AM

mcnumpty23 said:
look at the transfer speed when you do usb 2.0

would have thought about 30mbs for usb 2.0


actually its 60mb/s on both usb 2 and 3. after 5 seconds it drops down to about 60mb/s.
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a b V Motherboard
May 13, 2013 8:00:06 AM

OK, Just did a test before responding.
System: Laptop w/256 gig Crucial M4 SSD, USB2 and 3 Ports, Test file = 2.4 Gig Mpeg4 video file.
USB Thumbdrive: Patriot SuperSonic 32gb (Same as yours)

Transfer time/Speed:
... USB 3 Port 33 Sec / 74.4 MB/s (Calculated 2.4/0.075 = 32 Sec which jives)
... USB 2 Port 95 Sec / 25 MB/s (Calculated 2.4/0.05 = 96 Sec which jives)
USB3 for that drive should be close to 3x faster on USB3 than on USB2

Your 15 gigs/0.150 = 100 Sec Does NOT jive Using 15 gigs/20 Min (1200 Sec)= 12.5 MB/s

1) I used a FAST SSD to transfer from. Remember Xfer rate in NOT just the port and Thumbdrive, must also factor in the drive being read. So what Drive is the source.

2) Question you indicated a 15 gig file, Is this a single file, or is it a collection of smaller files. There is a big difference in reading a single 15 gig SEQUENCIAL file and a collection of small files. Random 4 k performance from a Mechanical HDD is LOWWWWW and could account for very little diff between USB2 and 3 Port performance.

3) What is the Controller for the USB port? Mine is a 3rd party controller AND the driver from My Laptop Manuf was considerably outdated and I downloaded the latest driver from the Chipset manuf. (My laptop uses a Renesas chipset)
.. Along these lines - Double check the BIOS, verify that the controller is NOT set to USB2 and that Bios is enabled to use the port in USB 3 mode.

@ mcnumpty23 YEP 150 MB/s is VERY fast considering itis ONLY rated @ "100MB/s read* Up to 70MB/s write"
??? Megabits vs MegaBytes 150 megabits/sec = 18.75 megabytes/sec
the 18 MB/s is close to what I calculated his xfer rate at.
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a b V Motherboard
May 13, 2013 8:30:51 AM

Was writing my response when you last posted.

You said "actually its 60mb/s on both usb 2 and 3. after 5 seconds it drops down to about 60mb/s."
Was first 60 mb/s a misprint. IF so then the difference between first 4 sec (burst speed)and the 60 mb/s (sustanted throughput) is caused by the cache on the HDD (If HDD is the source) Typical New HDDs use a 32 Meg or 64 Meg cache that results in a High burst speed - Burst being the Key word here as it is short lived.
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a b V Motherboard
May 13, 2013 10:07:57 AM

yeah sorry--i should have put MB/s not mbs

tested mine similar to retiredchief though not as technical

1 large video file of 1gb

on usb 2.0 port 30MBs sustained copy to ssd

25MB/s copy to flash drive from ssd

on usb 3.0 port 85 to 90MB/s both ways sustained throughput

on asmedia usb 3.0 controller
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a b V Motherboard
May 13, 2013 10:35:44 AM

Also retested using my 64 Gig Patriot SuperSonic Magum.
For writes to it = 115 MB/s (same 2.4 gig File). Manuf spec is 200 MB/s read & 120 GB/s write, so Just under
The 32 gig Patriot SuperSonic was acually slightly higher than Manuf spec of 70 MB/s for writes (measured 74.4 GB/s).

mcnumpty23 both of us used a SSD as the source. Most likely the OP is using a HDD which has a Much slower read time. Complicated by not knowing 1) HDD RPMs and 2) How full the HDD is. With a 7200 RPM drive and if the file was on the Outer edge of the platter then his max read is probably around 120 MB/s. However if the file is toward the middle then Read speed is cut down and if located on the 30% closest to the center then his read speed would be Way down, close to only 20->30 MB/s
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May 13, 2013 10:59:36 AM

RetiredChief said:
Also retested using my 64 Gig Patriot SuperSonic Magum.
For writes to it = 115 MB/s (same 2.4 gig File). Manuf spec is 200 MB/s read & 120 GB/s write, so Just under
The 32 gig Patriot SuperSonic was acually slightly higher than Manuf spec of 70 MB/s for writes (measured 74.4 GB/s).

mcnumpty23 both of us used a SSD as the source. Most likely the OP is using a HDD which has a Much slower read time. Complicated by not knowing 1) HDD RPMs and 2) How full the HDD is. With a 7200 RPM drive and if the file was on the Outer edge of the platter then his max read is probably around 120 MB/s. However if the file is toward the middle then Read speed is cut down and if located on the 30% closest to the center then his read speed would be Way down, close to only 20->30 MB/s


the HDD's specs are: 7200RPM, 64MB cache, 1TB of space and its name is seagate barracuda xD
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a b V Motherboard
May 13, 2013 11:46:52 AM

^ And how full is the drive.
Remember your over all speed of transfer if HDD is source and Thumbdrive is target is equal to Read from HDD + Write to Thumbdrive.

While your HDD could be a factor, I would still expect decreased write time to thumbdrive for USB3. I do not expect it to be in the same order as what mcnumpty23 and myself posted. I think you have one of the following issues:
1) Bios set to USB2 for your USB3 port. Look in MB Manual to see if there is a setting for your USB3 port.
2) Driver not the latest. As I indicated, some MB manuf (or OEM Computers) are lax in updating their drivers. Inwhich case you need to identify the chipset and check with the chipset manuf for the latest driver.

May help if you post your MB make/model. I'm leaving work shortly and may not get back for a while - Maybe mcnumpty23 will check the Manual for chipset vs what they list for a driver date.
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May 13, 2013 12:10:32 PM

RetiredChief said:
^ And how full is the drive.
Remember your over all speed of transfer if HDD is source and Thumbdrive is target is equal to Read from HDD + Write to Thumbdrive.

While your HDD could be a factor, I would still expect decreased write time to thumbdrive for USB3. I do not expect it to be in the same order as what mcnumpty23 and myself posted. I think you have one of the following issues:
1) Bios set to USB2 for your USB3 port. Look in MB Manual to see if there is a setting for your USB3 port.
2) Driver not the latest. As I indicated, some MB manuf (or OEM Computers) are lax in updating their drivers. Inwhich case you need to identify the chipset and check with the chipset manuf for the latest driver.

May help if you post your MB make/model. I'm leaving work shortly and may not get back for a while - Maybe mcnumpty23 will check the Manual for chipset vs what they list for a driver date.


Well how is it that you didn't find my motherboard make and model in my signature message? Anyways its an MSi 970A-G46
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Best solution

a b V Motherboard
May 13, 2013 1:27:03 PM

Easy, I missed the fine print.

If you check the manual you would find you have a ASM1042 USB controller (3rd party).
Checking MSI the latest driver I saw was dated 3/8/2012
Googling the ASM1024 or (
You would find the latest driver is dated 3/6/13 (Ver 1.16.4.0)
http://www.station-drivers.com/page/asmedia.htm

Also Noted in above link: There is a Firmware dated 16:04:13 (It says Asus, so do not know if this is specific to Asus MBs or if ASMedia is owned by Asus - Your research time.

Maybe mcnumpty23 can chime in as he has that same Chipset on Which Version he is using and what firmware.
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a b V Motherboard
May 13, 2013 1:50:44 PM

i am using driver 1.16.4.0

and as retiredchief said i got it from somewhere other than my motherboard makers website as theirs was an older driver

the firmware i left as it came--as i am having no speed issues-- flashing firmware always carries a slight risk

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May 13, 2013 2:27:31 PM

RetiredChief said:
Also retested using my 64 Gig Patriot SuperSonic Magum.
For writes to it = 115 MB/s (same 2.4 gig File). Manuf spec is 200 MB/s read & 120 GB/s write, so Just under
The 32 gig Patriot SuperSonic was acually slightly higher than Manuf spec of 70 MB/s for writes (measured 74.4 GB/s).

mcnumpty23 both of us used a SSD as the source. Most likely the OP is using a HDD which has a Much slower read time. Complicated by not knowing 1) HDD RPMs and 2) How full the HDD is. With a 7200 RPM drive and if the file was on the Outer edge of the platter then his max read is probably around 120 MB/s. However if the file is toward the middle then Read speed is cut down and if located on the 30% closest to the center then his read speed would be Way down, close to only 20->30 MB/s


RetiredChief said:
Easy, I missed the fine print.

If you check the manual you would find you have a ASM1042 USB controller (3rd party).
Checking MSI the latest driver I saw was dated 3/8/2012
Googling the ASM1024 or (
You would find the latest driver is dated 3/6/13 (Ver 1.16.4.0)
http://www.station-drivers.com/page/asmedia.htm

Also Noted in above link: There is a Firmware dated 16:04:13 (It says Asus, so do not know if this is specific to Asus MBs or if ASMedia is owned by Asus - Your research time.

Maybe mcnumpty23 can chime in as he has that same Chipset on Which Version he is using and what firmware.


I installed the driver and now it can transfer at about 122mb/s(driver version 1.16.4.0) . I have finally seen the difference in transfer speeds between the USB 3 and 2 :D  Thanks
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a b V Motherboard
May 13, 2013 3:16:13 PM

glad you got there in the end

just out of curiosity i uninstalled the asmedia driver and installed the latest microsoft driver

version 6.2.9200.16548

this driver actually increased my read speed on my flash drive from 85/90 up to 115

it seemed to contain some sort of sata to usb bridge driver--it flashed by so quick i couldnt read it properly

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May 13, 2013 3:29:50 PM

mcnumpty23 said:
glad you got there in the end

just out of curiosity i uninstalled the asmedia driver and installed the latest microsoft driver

version 6.2.9200.16548

this driver actually increased my read speed on my flash drive from 85/90 up to 115

it seemed to contain some sort of sata to usb bridge driver--it flashed by so quick i couldnt read it properly



Well i suppose the driver that came with the motherboard isn't good. Though you can't say that the motherboard drivers are completely useless. For example, i cannot access the internet without the LAN driver on the disc so throwing it away like most people say would create a problem if you don't have another PC or laptop
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a b V Motherboard
May 13, 2013 3:32:24 PM

yeah i always keep the motherboard disc for precisely that reason

as long as you have drivers to access the internet everything else can be downloaded
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