Which Is The Better Method?
Unfortunately, there is no clear-cut choice. Each of the methods I will be detailing in this guide has its advantages and disadvantages.
The resistor mod is enticing because you can adjust the voltage easily. However, it's not easy to perform since it requires soldering of components on the graphics card. There is a real risk of damaging the card, especially if you have very little experience at soldering surface-mounted components.
There is a risk that you may accidentally adjust the variable resistor, reducing its resistance; while installing new hardware or messing around in the computer case. This may result in a very high GPU voltage that can kill the card when you start up the computer.
How about the pencil trick? It is favoured by many because it is easy to do and relatively safer than the resistor mod.
However, it is a very tedious process when it comes to getting the desired voltage. You will need to spend a lot of time drawing lines and testing them to get to the voltage you desire. It may not sound like much now but it will involve a lot of plugging and unplugging of your graphics card.
It is entirely up to you to choose which is most suitable for you and your card. If you follow our instructions and attempt them with caution, volt modding your card should not be a problem.
Notes
However, there are a few things you need to take note before you even consider those mods.
Please note that some of these mods only apply to the earlier version of Radeon 9800 Pro, which uses the R350 core and the original Radeon 9800 Pro PCB. The GPU volt mods won't work on the new 9800 Pro which uses the R360 core and 9800XT PCB. This is because the 9800XT PCB uses a different voltage controller for the GPU.
However, ATI used the same voltage controller chip for the Radeon 9800 XT's memory chips. So, it is possible to perform the memory volt mods on the Radeon 9800 XT. But you may still run into problems since the memory voltage check points are different. Therefore, I recommend you wait for my Radeon 9800XT volt modding guide before modding your Radeon 9800XT.
In addition, you should never attempt this mod with stock cooling. Please upgrade your card's cooler and add ramsinks to the memory chips if you are modding the memory voltage as well.
Needless to say, take your time when you are modding. You must attempt this mod carefully or you may end up with a dead card!
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