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Abit KT7a-Raid Mobo Voltage Mod
- Thread starter Diablo
- Start date
- Joined
- Apr 23, 2001
try http://tweakhardware.com as they have details of the KT7A voltage mod
- Joined
- Apr 26, 2001
- Location
- The land down under...LOL..
try here.
i`ve did it to mine.
and i hope that u r using it with water cooling?????
if not then forget it!!!!
GOD...
i`ve did it to mine.
and i hope that u r using it with water cooling?????
if not then forget it!!!!
GOD...
- Joined
- Apr 10, 2001
Do a search on "To Vmod or Not to Vmod that is the question..." posted by me about 2 weeks ago. Colin responded with in detail pics and info on how to do this. I'm in the process currently. Tweakhardware.com recommends a single resistor, Colin had a better idea of using a trimmer. It is basically a tiny potentiometer allowing you to adjust resistance, thus adjusting the voltage.
All motherboards don't require the same resistance. Using a trimmer avoids this problem. Below are my standard KT7 volt mod instructions.
Solder wires to Pin 7 and Pin 10 of the IC that controls the voltage to the CPU. Put a 47K trimmer (49 cents at Radio Shack part # 271-283) between each wire and ground. Use a spade lug or loop under a motherboard mounting screw for your ground connection. For convenience I suggest you mount the trimmers on a piece of breadboard and secure it to your motherboard tray with Velcro.
Pin 7 controls the voltage, Pin 10 controls maximum voltage threshold. Turn the trimmers to full resistance boot your PC and start VIA Hardware Monitor. Set the polling interval to 2 seconds and slowly dial up the pin 7 trimmer until the voltage peaks. This should be about 2.1 volts. Then dial up the Pin 10 trimmer until your screen blanks and back it off a tad. Your PC will probably reboot when the screen blanks. Go back into VIA Hardware Monitor and dial the Pin 7 trimmer up to 2.3 volts. You may be able to go higher but I don’t recommend it.
Caution this will stress your cooling. Be careful or your CPU could end up a crispy critter. I also suggest buying a third hand device from Radio Shack to hold a pre-tinned wire to the IC leg while you solder. The magnifying glass on the third had will come in handy too. Get in and out fast so you don’t toast the IC. Lay off the caffeine and if you are of age, have a beer a half hour before soldering to steady your hands.
Be sure to tie your wires down to the board. After doing several boards, I finally screwed one up. The mod went fine but I snagged the wire to Pin 10 on the end of my workbench and ripped the IC pin right off the board.
[img="[URL]http://albums.photopoint.com/j/View?u=1551335&a=11768501&p=42534658[/URL]"]
Solder wires to Pin 7 and Pin 10 of the IC that controls the voltage to the CPU. Put a 47K trimmer (49 cents at Radio Shack part # 271-283) between each wire and ground. Use a spade lug or loop under a motherboard mounting screw for your ground connection. For convenience I suggest you mount the trimmers on a piece of breadboard and secure it to your motherboard tray with Velcro.
Pin 7 controls the voltage, Pin 10 controls maximum voltage threshold. Turn the trimmers to full resistance boot your PC and start VIA Hardware Monitor. Set the polling interval to 2 seconds and slowly dial up the pin 7 trimmer until the voltage peaks. This should be about 2.1 volts. Then dial up the Pin 10 trimmer until your screen blanks and back it off a tad. Your PC will probably reboot when the screen blanks. Go back into VIA Hardware Monitor and dial the Pin 7 trimmer up to 2.3 volts. You may be able to go higher but I don’t recommend it.
Caution this will stress your cooling. Be careful or your CPU could end up a crispy critter. I also suggest buying a third hand device from Radio Shack to hold a pre-tinned wire to the IC leg while you solder. The magnifying glass on the third had will come in handy too. Get in and out fast so you don’t toast the IC. Lay off the caffeine and if you are of age, have a beer a half hour before soldering to steady your hands.
Be sure to tie your wires down to the board. After doing several boards, I finally screwed one up. The mod went fine but I snagged the wire to Pin 10 on the end of my workbench and ripped the IC pin right off the board.
[img="[URL]http://albums.photopoint.com/j/View?u=1551335&a=11768501&p=42534658[/URL]"]
