I want 2 hard drives on the IDE port of my powermac g5. Therefore i have to split the power supply to the optical drive with a y molex cable. What is the power consumption of a optical drive and is it equivelent to 2 IDE hard drives? I took out the sony ODD already and figured: P = U * I 12v * 2 a = 24 watt 5v * 1,6a = 8 watts. When i googled i found that a hard drive consumes about 7~8 watts. So am i in the green here? Will this work? And what if it doesnt work? Post scriptum. I know there are ide > sata coverters but id rather have it this way.