I read here and there that this system is best done in 3's for some odd reason. So why have 4 slots? I currently run 2-2-2-2 and with LR, PS, DW, FF, etc etc. the system is grinding to a halt everyday. Wondering if I get a pair of 8's and keep the deuces, will the pair of 2's be a hindrance or a boost? If I get 3 8's will the extra 2g card in the 4th slot add or take away? Just trying to gain a better understanding of how the config. works and why it's all uppity LOL thanks!!!