As you all know, it is possible to voltage mod your graphics card to improve the overclockability of its GPU and memory chips. However, unlike overclocking, voltage modding requires you to physically mod the card. Today, we will cover the voltage modding techniques for the ATI Radeon X800 graphics cards. This covers both the X800 Pro as well as the X800 XT PE. Just remember to read through the guide and follow our steps carefully!