Which of these power supplies should I buy for my Dell PC?

It's a 2004 Dell Dimension 4600



http://www.newegg.com/product/product.as...

http://www.newegg.com/product/product.as...

http://www.newegg.com/product/product.as...



don't know if those will fit?

and which brand is better?

Which of these power supplies should I buy for my Dell PC?

1st choice is the 1st Fortron because of the better set off of the output amps on the different rails.

2nd Fortron is wonderful for newer PCs that require most of the wattage on the +12V rails.

The Thermaltake component has a single +12V guiderail and most of its wattage is on the lower voltage rails. It is great for old PCs w/ minimal lateral devices.



Fortron and Thermaltake are both good brands.



Retail power supplies are 150mm wide open (5.9 in.). Measure the size of your existing power supply. Same width funds mounting holes will align.
though the second one has a slightly greater rating from newegg customers, iv never heard the brand of the first 2. the Thermaltake one i would vote is betst. i reconize Thermaltake
Need more information...why do you need one?