Both of your questions come down to noise. If you're happy with the noise level of your current case fans, then there's no reason to buy new fans. Same thing with a bolt on hard drive cooler, they will quiet your hard drive because of the rubber grommets included with it. As far as a new northbridge, that's your call. It can't hurt, but I can't tell you that it's necessary,either.
Originally Posted by rrobbie
i want to buy bits and pieces for my pc
i was wondering would it be worth while fitting the hard drive cooler that bolts to the bottom of the hdd even tho the are sitting behind case fans in the atnec removable bays (would the coolers fit even) or would they just be a waste of time and not do much .
is it worth replacing the stock antec case fans i have four or are the good enough??? also the zalman northbridge heatsink looks kinda cool and cheap should istick one on aswell