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Windows 7: Boost Windows 7 SP1 USB Storage Devices Performance by Increasing Maxi

14 Aug 2011   #11
DaGooN

Windows 7 64bit Ultimate SP1, VMware Windows 7 64bit Ultimate SP1
 
 

1. First, download the hotfix (KB 2581464) and install it.
2. Click Start and type regedit in the Search box, and then press Enter.
3. Navigate to:
HKEY_LOCAL_MACHINE – SYSTEM – CurrentControlSet – Control – usbstor – VVVVPPPP.
4. If the VVVVPPPP key is not there, create a new key under ‘usbstor’ (see screenshot above)
5. Click Edit menu, point to New, and then click DWORDValue.
6. Type MaximumTransferLength, and then press Enter.
7. Click Edit menu, and then click Modify. Select Decimal and type a value between 65535 (64KB) and 2097120 (2MB).


Boost USB Storage Performance in Windows 7 by Increasing Maximum Transfer Rate | techtrickz


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14 Aug 2011   #12
Airbot

Windows 7 Ultimate x64 SP1
 
 

And how are users supposed to compare before and after results of applying the hotfix/registry edit to see if it even does anything, or if it's just a bunch of malarkey? Or if creating the new key even makes it work in the first place, since MS doesn't even mention it?
My System SpecsSystem Spec
14 Aug 2011   #13
xxxdannyxxx

Windows 7 Home Premium x64 SP1
 
 

Quote   Quote: Originally Posted by Airbot View Post
Quote   Quote: Originally Posted by xxxdannyxxx View Post
I looked at this a day or so ago but never had the VVVV/PPPP subkey even after installing the hotfix so didnt bother



Danny

Neither do I, before or after applying the hotfix. Are we supposed to create it as a new key?
Personally I didnt as there was no mention of creating it yourself so I presumed my external devices weren't compatible.Some clarification on this would be nice

Danny
My System SpecsSystem Spec
.

14 Aug 2011   #14
DaGooN

Windows 7 64bit Ultimate SP1, VMware Windows 7 64bit Ultimate SP1
 
 

you could just use a Benchmark tool like

CrystalDiskMark 3.0.1

HDTune

ATTO

run it on take a snapshot, then after the install run it again to see if there is any change in performance.
My System SpecsSystem Spec
14 Aug 2011   #15
arkhi

Windows 2000 5.0 Build 2195
 
 

Quote   Quote: Originally Posted by xxxdannyxxx View Post
Quote   Quote: Originally Posted by Airbot View Post
Quote   Quote: Originally Posted by xxxdannyxxx View Post
I looked at this a day or so ago but never had the VVVV/PPPP subkey even after installing the hotfix so didnt bother



Danny

Neither do I, before or after applying the hotfix. Are we supposed to create it as a new key?
Personally I didnt as there was no mention of creating it yourself so I presumed my external devices weren't compatible.Some clarification on this would be nice

Danny
Reading MS's Support Site~~~

Quote:

After you install this update, to increase the maximum transfer size of USB storage devices, follow these steps:
  1. Click Start Collapse this imageExpand this image


    , type regedit in the Start Search box, and then press Enter.
  2. Locate and then click the following registry subkey:
    HKLM\SYSTEM\CurrentControlSet\Control\usbstor\VVVVPPPP
  3. Click Edit, point to New, and then click DWORDValue.
  4. Type MaximumTransferLength, and then press Enter.
  5. Click Edit, and then click Modify.
  6. In the Value data box, type a value to specify the maximum transfer size between 64KB and 2MB. For example, you select Decimal and type a value between 65535 (64K) and 2097120 (2M).
  7. Exit Registry Editor.
Notes
  • VVVV represents device descriptor idVendor in hexadecimal.
  • PPPP represents device descriptor idProduct in hexadecimal.
From (More Information) An update to increase the maximum transfer size of USB storage devices in Windows 7 or in Windows Server 2008 R2
My System SpecsSystem Spec
14 Aug 2011   #16
xxxdannyxxx

Windows 7 Home Premium x64 SP1
 
 

Well tried it adding the reg key by hand.These are the results with HD Tune

Before
Boost Windows 7 SP1 USB Storage Devices Performance by Increasing Maxi-before.png


After
Boost Windows 7 SP1 USB Storage Devices Performance by Increasing Maxi-after.png

The disk could have written any extra data in the time it took me to write this post

Not buying this one although it is an old HDD

Danny


My System SpecsSystem Spec
14 Aug 2011   #17
arkhi

Windows 2000 5.0 Build 2195
 
 

Just to add for more FYI (I don't have a USB HDD nearby so I can't test the accuracy):

If I'm not mistaken, these are the idVs and idPs for hardware (accessible via Device Manager)


Attached Images
Boost Windows 7 SP1 USB Storage Devices Performance by Increasing Maxi-capture.png 
My System SpecsSystem Spec
14 Aug 2011   #18
DaGooN

Windows 7 64bit Ultimate SP1, VMware Windows 7 64bit Ultimate SP1
 
 

just did it. here is what i got on a 16GB Flash drive.

Before & after.. not much of a boost really. more of a downgrade.

look when i first got it. 8mbs on the write. now i don't get more than 6mbs? ..

*edit. just unistalled it. back to 8mbs writes.. how odd?


Attached Images
Boost Windows 7 SP1 USB Storage Devices Performance by Increasing Maxi-b4.jpg Boost Windows 7 SP1 USB Storage Devices Performance by Increasing Maxi-after.jpg Boost Windows 7 SP1 USB Storage Devices Performance by Increasing Maxi-16gb-speed-test.jpg 
My System SpecsSystem Spec
14 Aug 2011   #19
Airbot

Windows 7 Ultimate x64 SP1
 
 

Quote   Quote: Originally Posted by arkhi View Post
Quote   Quote: Originally Posted by xxxdannyxxx View Post
Quote   Quote: Originally Posted by Airbot View Post


Neither do I, before or after applying the hotfix. Are we supposed to create it as a new key?
Personally I didnt as there was no mention of creating it yourself so I presumed my external devices weren't compatible.Some clarification on this would be nice

Danny
Reading MS's Support Site~~~

Quote:

After you install this update, to increase the maximum transfer size of USB storage devices, follow these steps:
  1. Click Start Collapse this imageExpand this image


    , type regedit in the Start Search box, and then press Enter.
  2. Locate and then click the following registry subkey:
    HKLM\SYSTEM\CurrentControlSet\Control\usbstor\VVVVPPPP
  3. Click Edit, point to New, and then click DWORDValue.
  4. Type MaximumTransferLength, and then press Enter.
  5. Click Edit, and then click Modify.
  6. In the Value data box, type a value to specify the maximum transfer size between 64KB and 2MB. For example, you select Decimal and type a value between 65535 (64K) and 2097120 (2M).
  7. Exit Registry Editor.
Notes
  • VVVV represents device descriptor idVendor in hexadecimal.
  • PPPP represents device descriptor idProduct in hexadecimal.
From (More Information) An update to increase the maximum transfer size of USB storage devices in Windows 7 or in Windows Server 2008 R2

What's your point?



Not seeing any real positive difference either, at least for my device.

Read
Before............................................................After
Boost Windows 7 SP1 USB Storage Devices Performance by Increasing Maxi-3.jpgBoost Windows 7 SP1 USB Storage Devices Performance by Increasing Maxi-after2.jpg

Read/write
Before...........................................................After
Boost Windows 7 SP1 USB Storage Devices Performance by Increasing Maxi-4.jpgBoost Windows 7 SP1 USB Storage Devices Performance by Increasing Maxi-after.jpg

Read/write
Before...........................................................After
Boost Windows 7 SP1 USB Storage Devices Performance by Increasing Maxi-2.jpgBoost Windows 7 SP1 USB Storage Devices Performance by Increasing Maxi-after3.jpg


My System SpecsSystem Spec
14 Aug 2011   #20
xxxdannyxxx

Windows 7 Home Premium x64 SP1
 
 

Quote   Quote: Originally Posted by Airbot View Post
What's your point?



Ive tried now on several Hdds and Usbs and none show any significant increases at least on my devices

Danny
My System SpecsSystem Spec
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 Boost Windows 7 SP1 USB Storage Devices Performance by Increasing Maxi




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