First off i would like to point out that if you DO carry this modification out, neither me or OC3D accepts any responsibility for any mishaps or damage caused.
You will need:
A quick explaination of pencil modding:
The voltage that goes into the GPU or ram on a graphics card is most usually determined by one single resistor, looking like this:
These are called SMD Resistors and limit the voltage through the track by a set amount.
The core of your typical household pencil consists of the substance Graphite, which is able to conduct electricity. Due to the structure of Graphite, its conductivity, like with most substances, depends on the quantity of it. Because of this property, it is possible to bypass these SMD resistors and therefor allow more voltage to pass through the track
How to do it:
First off you will need to get familliar with your multimeter, learn how to get an appropriate, accurate reading.
Secondly, you will need to locate the correct SMD resistor on your PCB. With Graphics cards you typically have two. One for the GPU core voltage and the memory voltage.
Thirdly you will need an understanding of Ohms law. V = I x R (V being voltage, I being intensity / current, R being resistance)
To start the mod you will need to know the current voltage (easily found in the BIOS) and the resistance of the SMD resistor while PC is off (found with multimeter- should be a few hundred Ohms).
You can then proceed to add a pencil line (2B works fine) on the resistor like so:
(be SO careful not to touch any other tracks or resistors)
Do this lightly at first, and test the resistance again, you should get a drop in resistance of around 80-100 ohms. Test this and check the voltage readout in the BIOS. You can then proceed to repeat adding a layer of graphite untill the desired voltage is met.
And remember, you can always rub out your mistakes.
Hope this helps anyone who is not too sure of what pencil-mods involve.
You will need:
- multimeter
- a pencil
- you PCB
- some tape
A quick explaination of pencil modding:
The voltage that goes into the GPU or ram on a graphics card is most usually determined by one single resistor, looking like this:

These are called SMD Resistors and limit the voltage through the track by a set amount.
The core of your typical household pencil consists of the substance Graphite, which is able to conduct electricity. Due to the structure of Graphite, its conductivity, like with most substances, depends on the quantity of it. Because of this property, it is possible to bypass these SMD resistors and therefor allow more voltage to pass through the track
How to do it:
First off you will need to get familliar with your multimeter, learn how to get an appropriate, accurate reading.
Secondly, you will need to locate the correct SMD resistor on your PCB. With Graphics cards you typically have two. One for the GPU core voltage and the memory voltage.
Thirdly you will need an understanding of Ohms law. V = I x R (V being voltage, I being intensity / current, R being resistance)
To start the mod you will need to know the current voltage (easily found in the BIOS) and the resistance of the SMD resistor while PC is off (found with multimeter- should be a few hundred Ohms).
You can then proceed to add a pencil line (2B works fine) on the resistor like so:

(be SO careful not to touch any other tracks or resistors)
Do this lightly at first, and test the resistance again, you should get a drop in resistance of around 80-100 ohms. Test this and check the voltage readout in the BIOS. You can then proceed to repeat adding a layer of graphite untill the desired voltage is met.
And remember, you can always rub out your mistakes.
Hope this helps anyone who is not too sure of what pencil-mods involve.