Providing power to a 9800 gtx oc thru pci sata power port

I recently bought an i7 rig (920,intel dx58SO mobo, 3 gb ddr3 RAM 1333mhz, seagate 320 gb hdd, lg dvd writer, xfx 9800 gtx+) with this zebronics realwatts pro 600 psu. Now my video card requires 2 6 pin connectors (actually this is 65nm overclocked 9800gtx). But then, i am having to disable HT and also 2 cores of the i7 or else in full fledged gaming, the system is hanging within 2 minutes. I am not overclocking anything. Is the psu low for my config ? Then again, if i connect the molex or sata power connector for pci, and then remove one 6 pin connector from the video card, will it run with full efficiency ? Then perhaps i can enable all 4 cores of my cpu ?

I can't find the specifications of the PSU. Do you know how many amps are on the 12V rail? This is probably a generic. You need a better quality PSU.