hi all. i need you to help me with a problem. i have a gigabyte ep45t-dr3 motherboard and 2 * 2gb kingmax ddr3 @ 1600 mhz modules of memory. the problem is they are curently working at 1333mhz... i tried to OC them to 1600, but the system crashes after save and exit in bios... it doesn`t make any beeps or nothing... the power led is going on and off until i push the reset button and the settings in bios are backing up. my curent configuration is : ga-ep43t-ds3 motherboard, intel c2d e8500, 2 * 2 GB kingmax @ 1600, seagate 500gb 32mb, his ati hd 4870 512mb, creative x-fi xtreme audio pcie and a 500W psu. is it possible that the psu would be the problem because it`s only 500W? or am i doing something wrong? thanks!