As for the Codegen, it will not give you what you want.
Since you are looking for a good PSU on a tight budget, look at NewEgg.
Here are three PSU's that will give you what you need for a good price.
The <A HREF="http://www.newegg.com/app/ViewProduct.asp?submit=manufactory&catalog=58&manufactory=1446&DEPA=1&sortby=14&order=1" target="_new">Heroichi Electronics HEC-300AR-T</A> is a good PSU. Don't let the 300W rating fool you. It has more than enough Amperes and Watts to supply most systems. THG has given Heroichi good marks. It has <A HREF="http://www.newegg.com/app/Showimage.asp?style=album" target="_new">28A on +3.3V, 30A on +5V, and 15A on the +12V lines</A>.
If you look further down on the NewEgg page only showing Heroichi PSU's you will see a 350W. It only has 12A on +12V. You would be unhappy with that PSU even though it says 350W. +12V is the most important for today's AMD systems.
For $31.00 + $6.00 shipping it is a good PSU.
The <A HREF="http://www.newegg.com/app/ViewProduct.asp?submit=manufactory&catalog=58&manufactory=1831&DEPA=1&sortby=14&order=1" target="_new">Fortron - FSP300-60PN</A> is a good PSU. I have three of these. One still in the box and two being used. Again, don't let the 300W fool you. It also has <A HREF="http://www.newegg.com/app/Showimage.asp?style=album" target="_new">28A on +3.3V, 30A on +5V, and 15A on the +12V lines</A>.
This is $32.00 + $0.00 for shipping. This is a better deal.
However, if you want more juice, look at the <A HREF="http://www.newegg.com/app/viewproduct.asp?DEPA=1&order=PRICE&submit=manufactory&catalog=58&manufactory=1231&description=&page=1" target="_new">Enlight EN-8420934 420W</A>.
It has <A HREF="http://www.newegg.com/app/Showimage.asp?style=album" target="_new">40A on +3.3V, 30A on +5V, and 18A on the +12V lines</A>. I have one of these running an AMD XP at 1.73GHz. It has a lot of toys and a Gainward GF4 Ti 4200. I am more than happy with this PSU and for $46.00 + $0.00 for shipping it is a good deal.
I hope this helps.
<A HREF="http://forumz.tomshardware.com/community/modules.php?name=Forums&file=viewtopic&p=28752#28752" target="_new">THGC meeting? Would you go if there was one?</A>