I have a HP m7580 Pavalion.. I have a noisy fan and i want to get rid of it also because my soon to be bought Nvidia 9600 GT wont support a 300 Watt psu.. I want to know which one is recommended for that certain card and how to know if it will fit my case
 
Thank you in advanced  

1. You have 2GB 533 MHz ddr2 ???--Bottle neck---> 2GB 800ddr2 ( see mobo support )
2. ANY GOOD axt 430+  hi-Q with 80 Plus logo (A computer power supply that is more than 80% efficient )
http://www.newegg.com/Product/Prod [...] 6817371006

^Agreed on the RAM.  
 
Get a PSU listed in the top tires here:
http://www.xtremesystems.org/forum [...] p?t=108088

ohh ty but i still want to know how i can see if the psu will fit, and can you give me a option thats under 50? ty

Hmm... under $50 is kind of a tough choice. For $20 more you can get this:
http://www.newegg.com/Product/Prod [...] 6817153052
or if you must be under $50:
http://www.newegg.com/Product/Prod [...] 6817256032
^$47. You won't be able to plug in much things in to it due to low Watts (ie. 4+HDDs,etc)

1.Open your HP m7580 Pavalion and have a look and see...  
2. 80+ PSU  under 50e or £ or $ ??? Under 50$ that will be hard one...

i think i'll go with the 70$ thermaltake one then but i want to know wy my computer is making so much noise :-/ its clean inside i checked but its extremely loud (Jet plane Stylin') is there any way to lower the rotations per second in the meanwhile?

http://cgi.ebay.com/Thermaltake-50 [...] dZViewItem
 
 
 
 
I found it for 50$ is it this one?

1. Bios settings ok?
2. You can use zalman RS100 to lower your fan speed.... but look temps

man - you don't know noisy till you've heard a 2900 XT or pro, now THOSE are jet planes (can hear mine through 2 layers of wall, when on about 70% speed )

Finding a "good" PSU (at least tier-3, preferably 2) for only $50 can be a daunting task, but deals are sometimes available.
Here's an Antec unit (probably a tier-3)
Antec Basiq BP500U ATX12V Version 2.01 500W Power Supply 100 - 240 V UL, CB, CE, CSA, TUV, FCC - $40 after $30 MIR
http://www.newegg.com/Product/Prod [...] 6817371004