Does closing the last L5 bridge still work for the AthlonXP Tbred series? My sister does cad and it takes several hours to render. I was thinking of recommending a dual processor system. Ideal, i would use dual Xeons (I am an Intel fanboy), but they are too expesnive for this project as we already have half the parts of the MP. My question is: does the mods for the Pally and Barton processor which convert the XP into the MP work for tbreds? Thanks.