Registry Trick to Improve Internet Speed (Windows XP)
A) Registry Hack to Boost TCP/IP Performance
1. Open Notepad and paste the following:
Windows Registry Editor Version 5.00
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters]
“SackOpts”=dword:00000001
“TcpWindowSize”=dword:0005ae4c
“Tcp1323Opts”=dword:00000003
“DefaultTTL”=dword:00000040
“EnablePMTUBHDetect”=dword:00000000
“EnablePMTUDiscovery”=dword:00000001
“GlobalMaxTcpWindowSize”=dword:0005ae4c
2. Save the file as speed.reg and run it to add the registry entries.
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B) Increase Download Speed
1. Press the Start button and select Run.
2. Type gpedit.msc and click OK.
3. In the left pane, go to Administrative Templates > Network.
4. Under Network, select QoS Packet Scheduler.
5. On the right pane, double-click Limit Reservable Bandwidth.
6. A box will appear. Select the Enabled option.
7. Change the bandwidth limit percentage from 20% to 0%.
8. Click OK and close the program.
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C) Optimize Internet Download Manager (IDM)
1. Download Internet Download Manager (IDM) from here and install it.
2. Open IDM, go to Options > Connections.
3. Under Connection Type/Speed, set it to LAN 10Mbps.
4. Below, change Maximum Connections to 16.
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D) Further Registry Tweaks for Speed
1. Press Start > Run, type regedit and press OK.
2. Navigate to:
HKEY_LOCAL_MACHINE > SYSTEM > CurrentControlSet > Services > Tcpip > Parameters.
3. Modify the following values:
class = Do not manipulate
dns priority = Change to a lower value
host priority = Change to a lower value
local priority = Change to a lower value
netbt priority = Change to a lower value
The valid range for priority values is from -32768 to +32767, where lower numbers give higher priority. Set values to around 1 for best results, but avoid going to extremes to avoid damaging your internet connection.
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After completing these steps, restart your computer and check your download speeds. You should see a gradual improvement in download performance depending on the file size.