I have the Dell8400 w/ the 925x chipset. I currently have 2x512 DDR2 PC4200 533mhz installed, and was thinking about upgrading to 2gb (4x512.) I heard there may be some "timing" issues with having this setup. Will this motherboard be able to handle 4 DIMMs? How do you adjust timing on memory, and what are the optimal settings? Thanks in advance for any help.