How do you tell how fast your HD's are RMP wise.  I was able to find the orginal calc patio given me to calc the one psu I was going to probably replace http://www.thermaltake.outervision.com/index.jsp  I dont SEE were on the DRIVE it mentions that however.  Try Everest.  Sorry went threw with win 7 a good bit.  Anyone know anything else to try?  I'll try tommorow since I just got xp back on the drive an nothing else is setuphow old is the drive.not really all that old one is sata which is about 2 years an the other are ide which are older an not real sure got these at differnt times from people.HDD Speed Test.

Not sure why this will determine which PSU you buy however...If I recall this is the site you sent me too a good while back.  http://www.thermaltake.outervision.com/index.jsp  To determine what I need I have too have that info.  But if I got such as a powerful psu it wouldnt hurt anything right?  Like if I got a 1000 watt psu it would just use whats needed an not that amount.Not sure what I'm doing wronmg says that it should work with 240 watt but I have a 300 some in there an its not enough.It turns on doesnt it?  If it turns on then why do you need a new one.  Oh and all it will hurt is your electric bill.  That one I recommended you in another thread will work if you dont feel SAFE with 300wA more powerful PSU than you need will not hurt anything.
If it's an extreme case, e.g. 100W PSU and you only need 200W, it will be quite inefficient, but this is irrelevant if it's not so extreme and it's a good PSU.well my harddrives kick off an such its a pent 4