The Jaton card is a 6200TC. TC stands for Turbo Cache, which despite its name is anything but turbo. It shares your memory with your system ram creating a horrible bottleneck and killing performance. Stay AWAY from the 6200TC models.
Give your video card its own cable. All other devices are fine on the same cable. Just use common sense, don't put 18 120mm fans on one molex or something and you will be fine.