Hell-Fire
07-27-2004, 08:57 PM
I recently received this supply from FlyingHamster in a request to grab some more juice. So here is the simplest way to do it.
The only sense line available via the ATX Connector is for the 3.3v sense rail. The 5v and 12v rails do not have a sense wire present, so a look inside the psu housing is the next step to see if there are any factory installed pots for this particular supply.
There is a very nicely written review by Eric "OPPainter" Kronies that can be found here (http://www.xtremesystems.org/modules.php?op=modload&name=Seviews&file=index&req=showcontent&id=7) on this very psu.
For the 3.3v rail mod, the standard sense wire mod is the best way to go, and is covered in this Guide (http://www.xtremesystems.org/forums/showthread.php?s=&threadid=37574).
Now, onto getting more juice for the 5v/12v rails.
Upon removing the top of the housing, we notice a factory installed pot on the pcb to the far left near where the power flip switch is. The front leg of this pot is the target for the mod.
http://www4.ncsu.edu/~rwbradl2/Vmods/Hamster_TTGI_FactPot.jpg
**Note**
On supplies that have only a 5v sense wire present, modding that sense wire will effectively increase voltage on both the 5v and 12v rails (usually). Same goes for a single factory installed pot. If that pot is not for the 3.3v rail, then it usually will increase voltage for both 5v and 12v rails.
Now, we will use a 10K VR for this mod. Simply solder a wire to the middle leg of the VR, and a wire for a GND (ground) to the outter leg or the VR. Be sure to adjust the VR to max resistance before soldering it to the factory pot.
The fan plugs provide a good, and easily reached, ground point for our VRs.
http://www4.ncsu.edu/~rwbradl2/Vmods/Hamster_TTGI_Wires.jpg
The voltage on all rails will be a bit higher now right off the bat. I preset these voltages per Hamsters request, but they will climb much much further. The OVP must be very very high for this supply as I hit 15.3v, 6.75v, and 4.5v (3.3v rail) during testing.
http://www4.ncsu.edu/~rwbradl2/Vmods/Hamster_TTGI_3.3v.jpg
http://www4.ncsu.edu/~rwbradl2/Vmods/Hamster_TTGI_5v.jpg
http://www4.ncsu.edu/~rwbradl2/Vmods/Hamster_TTGI_12v.jpg
I installed the pots on the outside of the psu housing to make adjusting them easier for Hamster, and not to mention that my friend has my drill bits so I could not drill my own holes. I usually use the factory cut vent holes and mount the VRs inside the housing and the owner can adjust them thru those vent holes. Unfortunately, on this supply the vent holes are on the back of the psu. This would make adjustment much more tedious.
The only sense line available via the ATX Connector is for the 3.3v sense rail. The 5v and 12v rails do not have a sense wire present, so a look inside the psu housing is the next step to see if there are any factory installed pots for this particular supply.
There is a very nicely written review by Eric "OPPainter" Kronies that can be found here (http://www.xtremesystems.org/modules.php?op=modload&name=Seviews&file=index&req=showcontent&id=7) on this very psu.
For the 3.3v rail mod, the standard sense wire mod is the best way to go, and is covered in this Guide (http://www.xtremesystems.org/forums/showthread.php?s=&threadid=37574).
Now, onto getting more juice for the 5v/12v rails.
Upon removing the top of the housing, we notice a factory installed pot on the pcb to the far left near where the power flip switch is. The front leg of this pot is the target for the mod.
http://www4.ncsu.edu/~rwbradl2/Vmods/Hamster_TTGI_FactPot.jpg
**Note**
On supplies that have only a 5v sense wire present, modding that sense wire will effectively increase voltage on both the 5v and 12v rails (usually). Same goes for a single factory installed pot. If that pot is not for the 3.3v rail, then it usually will increase voltage for both 5v and 12v rails.
Now, we will use a 10K VR for this mod. Simply solder a wire to the middle leg of the VR, and a wire for a GND (ground) to the outter leg or the VR. Be sure to adjust the VR to max resistance before soldering it to the factory pot.
The fan plugs provide a good, and easily reached, ground point for our VRs.
http://www4.ncsu.edu/~rwbradl2/Vmods/Hamster_TTGI_Wires.jpg
The voltage on all rails will be a bit higher now right off the bat. I preset these voltages per Hamsters request, but they will climb much much further. The OVP must be very very high for this supply as I hit 15.3v, 6.75v, and 4.5v (3.3v rail) during testing.
http://www4.ncsu.edu/~rwbradl2/Vmods/Hamster_TTGI_3.3v.jpg
http://www4.ncsu.edu/~rwbradl2/Vmods/Hamster_TTGI_5v.jpg
http://www4.ncsu.edu/~rwbradl2/Vmods/Hamster_TTGI_12v.jpg
I installed the pots on the outside of the psu housing to make adjusting them easier for Hamster, and not to mention that my friend has my drill bits so I could not drill my own holes. I usually use the factory cut vent holes and mount the VRs inside the housing and the owner can adjust them thru those vent holes. Unfortunately, on this supply the vent holes are on the back of the psu. This would make adjustment much more tedious.