Is this power supply any good?

this is the power supply I found on Newegg.com

It has 2 +12V rails with 18 amps each. does this mean that it has 36 amps?

nope.  Dynapower is a brand that is also not well known or trusted on hardforums.

Only companys that produce good enough powersupplys are:

Enermax, Fortron, Seasonic, PCPower and cooling (if server), OCZ (most are made by third parties), Silverstone (usually seasonic PSU's) and the Ultra Pro X.  Those are the only brands I ever trust, and so far, havn't failed me yet.

nope.  Dynapower is a brand that is also not well known or trusted on hardforums.

Only companys that produce good enough powersupplys are:

Enermax, Fortron, Seasonic, PCPower and cooling (if server), OCZ (most are made by third parties), Silverstone (usually seasonic PSU's) and the Ultra Pro X.  Those are the only brands I ever trust, and so far, havn't failed me yet.

Sepheroth101

cant forget corsair=/=seasonic

well, corsair is good, for modular cables. But they are still not really UP their with the top, but still very good PSU's for sure.

Rosewill PSU's are from OEM companys, and are usually random. So the quality on it may be really good, or really poor. Check out Johnny Guru's review on it.

Edit: with quick search, i found this bad buy! FSP 500w

Most, to all fortron PSU's are at least 80% or over Efficient.

Another company I forgot to mention that makes AWSOME PSU's (which are usually made by Fortron) is Antec.  I got an Antec truepower Trio 650w, and its over 80% efficient.  The only ones from Antec that I trust are: Truepower, Neo (latest) and yeah, thats it (those are the ones by Fortron, the other ones are from other companys).

what about this one?diemensioncorp

i used to have that it was pretty unstable

really? check out Johnnys review: Rosewill 500w

But like i said before, its probably a hit and miss.

80% efficient meaning that the railings wont dip below too much when under heavy load, or even riples wont flictuate. For instance, lets say you have a 400w PSU, and you are running hardware enough to put that baby to the test. So you start loading all these benchmarks, and tests while gaming, and it is eating power from your system, which its power comes from the PSU (which is a step up transformer) and then you will find that your PSU may be only giving out like, 360w of actual power, thus, performance issues in the hardware. But the 80% is like were it will barely drop at all (all depends) So you might not lose a whole lot of power from the transformer.

Also, get a PSU with PFC, and look at this page, its very helpfull! PFC information and Efficiency 

80% efficient meaning that the railings wont dip below too much when under heavy load, or even riples wont flictuate. For instance, lets say you have a 400w PSU, and you are running hardware enough to put that baby to the test. So you start loading all these benchmarks, and tests while gaming, and it is eating power from your system, which its power comes from the PSU (which is a step up transformer) and then you will find that your PSU may be only giving out like, 360w of actual power, thus, performance issues in the hardware. But the 80% is like were it will barely drop at all (all depends) So you might not lose a whole lot of power from the transformer.Sepheroth101

Might want to read a bit more about PSUs.

Efficiency is how well the PSU can take the input power, from the wall, convert it and output to the components. A 400w PSU should be able to output 400w. A 400w PSU with 80% efficiency would be drawing 500w from the wall. Efficiency has absolutely nothing to do with rails/ripples/flucuations, you might want to use spell check btw.

Enermax,
Fortron, Seasonic, PCPower and cooling (if server), OCZ (most are made
by third parties), Silverstone (usually seasonic PSU's) and the Ultra
Pro X. Those are the only brands I ever trust, and so far, havn't
failed me yet.Sepheroth101

OCZ uses FSP PSUs, PCP&C and not only for servers, Silverstone's are usually made by Enhance/Etasis a few were made by SevenTeam, Corsair's are made by Seasonic and are very high quality, actually IMHO the highest quality modular units you can get.

I know the guy who made this thread, he is a very intelligent guy, and yeah, he made a really good post: PSU review and he quite often sais that Corsair is best for modular, but Silverstone is the best in terms of performance. And since he has the equipment to prove you guys wrong, I rather take his word for it.

Here is a really good post. PSU guide at Overclock.net

Just follow this, and you should be fine. 

I know the guy who made this thread, he is a very intelligent guy, and yeah, he made a really good post:  and he quite often sais that Corsair is best for modular, but Silverstone is the best in terms of performance. And since he has the equipment to prove you guys wrong, I rather take his word for it.

 

Here is a really good post.

Just follow this, and you should be fine.

Sepheroth101

what about this one?diemensioncorp

I say just go Antec, they've served me well.neodragon

[QUOTE="neodragon"]I say just go Antec, they've served me well.9mmSpliff

Yeah the neos are sick.

[QUOTE="9mmSpliff"][QUOTE="neodragon"]I say just go Antec, they've served me well.neodragon

Yeah the neos are sick.

What do you mean under volt?

If you are saying what I think you are saying, it just outputs more amps, since the volts are lower. 

[QUOTE="neodragon"]

[QUOTE="9mmSpliff"][QUOTE="neodragon"]I say just go Antec, they've served me well.LordEC911

Yeah the neos are sick.

What do you mean under volt?

If you are saying what I think you are saying, it just outputs more amps, since the volts are lower.

When I'm monitoring my voltage it just dips, this is a common sign of an unstable power supply as I've seen in MaximumPC reviews. But as you said it obviously just pushes more amps, which is what I meant by rock solid.