Is this an OVERRATED psu?

Sure it's over rated, if all your doing is adding up the amperages.
The combined 12v output is 22a, just like a Dell 305w

Plus if you max out the 5 and 3.3 volt rails (won't happen in a modern PC), you will only have about 10 amps available on the 12 volt rails.

Yopu need to read the label on the PSU closely to see how the power is divided among the various rails.

My general rule of thumb btw is to avoid all PSUs with max, maxx, and/or xtreme in the title. They tend to be junk.

well, so long as they say the max and continuous power outputs, but yeah if they just stare the max, then dont waste your time with them.

No, meant company or model name. Raidmax, Coolmax, etc.

welll see the reason i ask is because this asus psu feels very heavy and has more amps than both the zumax (uh-oh max again) 400w and 500w i have...and as i understand zumaxes are actually decent units...

ive never heard of zumax, and just did some research. Zumax seems to have its own PSU's which reviewed quite well, BUT, there is an epower zumax, which is another brand all together based on Topower. All this is very confising. Topower are cheaper PSU's where I come from. Im confused.... all 3 brands seem to be the same thing http://www.topower.com/product/zumax.htm. Then I found Topower make PSU's for BFG, OCZ, mushkin also. Anyone care to shed some light on this??

Not a bad rule.

Another rule: In the absence of everything else, when faced with two PSU's of similar ratings, buy the heavier one.

are you telling me my Acme Maxx Xtreme 700w PSU with 18a on its 12v that I bought for $9.99 won't be able to run my GTX 470's in SLI???  

http://www.youtube.com/watch?v=LTVEtr14FEA