Aswell as my new case (in previous topic), im wondering if i may need a new power supply. i think i have a 300watt one now (but how can i check this), wouldi need anything more (ie. 450watt) if i want to add a water cooling system and lighting,etc. to my athlon xp 2200, 512mb ram, geforce 4 4600, sb audigy? or wwill 300watt be sufficient for the water cooling etc.