OK so i'm buying either a x1900xt or 7900gtx for my sn25p shuttle pc. my question is, do i need to buy a y molex power splitter(so i can seperate one molex power output into 2 molex's), or shall i just plug 1 molex into the pci-e power convertor cable bundled with the gfx card???. one more thing, will the x1900xt temperatures be ok in a sn25p?? i'm imagining they will be the same as any other pc as the fan is enclosed within the plastic of the Heatsink compartment, and exhausts hot air directly out the case. but its better to be safe than sorry. thanks in advance!!!