9  VR Zones PCI Express Current Booster Mod

The following modification is a current booster mod for the PCI Express slots on your motherboards to potentially increase the current that the PCI Express slot can supply for your display cards.

Today’s Graphics Display Cards come in several variants. There are the power-hungry
ones which usually belong to the high-end category of cards. These require
a power connector directly from the power supply to supply enough current
on the +12v line to the card. For the mid-range cards, however, many of them
do not come with power connectors, since the current they draw are within
the specifications of the capability of the modern-day . This takes away the
hassle of plugging in the power connectors for the user. However, this convenience
comes at a price: There is a limit to the amount of current supplied to the
card. When we overclock these cards, especially for the heavy-duty overclockers
who modifies their cards and bioses for higher voltages, this limit can be
easily hit. And this draws up a wall for the enthusiast, so no matter what
cooling and voltages they apply, they find that their cards go no further.

The following modification is a current booster mod for the PCI Express slots
on your motherboards. This will potentially increase the current that the
PCI Express slot can supply for your display cards, thereby allevating the
power barrier for the cards that do not come with power connectors. Do Take
Note that this mod will void the warranty of your motherboard!

There are 2 ways to perform this mod. First way is to directly connect the
+12v and +3.3v lines from behind the ATX power supply connector. Let’s take
a look at the PCI Express slot from behind the motherboard.

5  VR Zones PCI Express Current Booster Mod

As seen above, this is how the PCI Express slot looks like from behind, with
the motherboard upright. You can see the 3 pins, +12v, +3.3v and the ground
pin which is connected via the motherboard trace. The trace cannot carry as
high a current as what a nice thick wire can do. So, what we can do is to
solder a thick wire to each of these pins. Be very careful and take precautions,
such as masking up the surrounding pins with tape, so that you don’t short
out the pins.

Now run these wires to the flip side of the ATX power connector of the motherboard.

8  VR Zones PCI Express Current Booster Mod

Depending on how it is orientated on the motherboard, check which pin corresponds
to which line of the ATX power connector. You are only interested in 3 colors,
yellow for +12v, orange for +3.3v and black for ground.

Solder the +12v wire from the slot to a pin behind any yellow lines on the
ATX power connector.

Solder the +3.3v wire from the slot to a pin behind any orange lines on the
ATX power connector.

Solder the ground wire from the slot to a pin behind any black lines on the
ATX power connector.

That’s it, you’re done!