hi i have a z68 motherboard with i2400, 8mb ram a dvd-rw and couple of fans and 1 gb hard drive, right now i am running a 550 ti video card but also have an engtx460 768 mb i may swap it with or maybe get a bigger one in the future, but this is a cyberpower c with the genereic xtremegear 700 watt power supply and i notice it doesnt even have another 6-pin connector so was thinging of upgrading to one of the better ones thats on sale at newegg can get the ocz 700 right now for 59.00 or the corsair tx750 for 79.00 any advice? also anyone know if the engtx asus 60 768mb would be better than my stock 550 ti? thanks