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How much is enough and the rest is over kill

post #1 of 30
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Since the planning of my new build the one thing that has gotten most of my attention is the power supply. Read about them seems to bring up more questions than answers. I know what its for, but don't know much about the physics of it (rail,load at different times ect...). Then there is the best brand around. From what I have read corsair and antec are the ones that seems to be at the top of the list. Then there is the amount of power needed.Its getting a little confusing now.

So this is what I would like to learn about. Is there a fool proof way to see how much power is needed. Also I like the modular ones, but is there a performance drop/increase with it. What should one look for in a PSU?

Thanks as always.
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post #2 of 30
Quickest way is to list your system specs on here and what your budget is, and one of the more experienced PSU buffs on here can help you out. PSUs are very complicated, and you have to learn about SMPS theory (lots of physics and electrical stuff); brands, OEMs, and platforms and their relationships and performance (have to talk with people who are experienced to learn it); and experience from seeing what type of systems will run on what power supplies, the power consumption at the wall, individual component consumption, etc. There are probably no more than two dozen people on this forum who can give reliably solid advice on power supplies, and no more than ten who really know their stuff.


So unless you have the time to devote to becoming a PSU buff, it's best to just ask. Also read my articles, follow the link in my signature below.
post #3 of 30
with the info provided I would say...

Buy a Corsair AX1200 and never have to buy another PSU. well at least for a longer while than if you bought a 750
post #4 of 30
Quote:
Originally Posted by nickbaldwin86 View Post
with the info provided I would say...

Buy a Corsair AX1200 and never have to buy another PSU. well at least for a longer while than if you bought a 750
And this is why I said there are only a couple of dozen people on this forum who can give good power supply advice.

^No offense mate, but really, it's a lot more complicated than that.
post #5 of 30
Generally people on these forums go way overkill on the PSU. ( Then again this is OCN )

Read up, some of the threads Phaedrus wrote are indeed very helpful.



Honestly though, if your budget is larger its nice to get a little extra power in case you want to ever upgrade. Never max it out.
post #6 of 30
There is a performance drop from modular, but it's so tiny it's not worth bothering with, and it only really matters if your connectors are insecure. Usually the benefits of modular massively outweigh the tiny downsides.

I've been hanging out here (and at JonnyGuru.com) for months, and I count myself as reasonably knowledgeable, but nowhere near up to Phaedrus's level. I've only managed to catch him out on one occasion.
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post #7 of 30
Quote:
Originally Posted by Phaedrus2129 View Post
And this is why I said there are only a couple of dozen people on this forum who can give good power supply advice.

^No offense mate, but really, it's a lot more complicated than that.
In lite of the "no offense mate" I am not offended nor mad....

BUT he gives no details, how do I know he isn't running 2x6970s and 2x580s (dedicated physx) and 40 fans, and 2 water cooling pumps and SR2 with 2 over clocked Xeons

I could have told him a little better judged answer if he would have filled out the sig line or at least added a few details about his rig.

Just saying...
post #8 of 30
Then ask and find out what he's running, like I did. Don't make blind recommendations. What if he's running so much that an AX1200 isn't enough?
post #9 of 30
Quote:
Originally Posted by nickbaldwin86 View Post
In lite of the "no offense mate" I am not offended nor mad....

BUT he gives no details, how do I know he isn't running 2x6970s and 2x580s (dedicated physx) and 40 fans, and 2 water cooling pumps and SR2 with 2 over clocked Xeons

I could have told him a little better judged answer if he would have filled out the sig line or at least added a few details about his rig.

Just saying...
Yes, OP, let us know.

PSUs aren't nearly as scary as Phae is running on about (he's inhaled too much solder today).

Just stick with the established manufacturers (Corsair you suggested isn't bad).

Honestly though, if you give folks an idea of what you're running they can nail your 'perfect' PSU with relative ease.
    
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post #10 of 30
Quote:
Originally Posted by Phaedrus2129 View Post
Quickest way is to list your system specs on here and what your budget is, and one of the more experienced PSU buffs on here can help you out. PSUs are very complicated, and you have to learn about SMPS theory (lots of physics and electrical stuff); brands, OEMs, and platforms and their relationships and performance (have to talk with people who are experienced to learn it); and experience from seeing what type of systems will run on what power supplies, the power consumption at the wall, individual component consumption, etc. There are probably no more than two dozen people on this forum who can give reliably solid advice on power supplies, and no more than ten who really know their stuff.


So unless you have the time to devote to becoming a PSU buff, it's best to just ask. Also read my articles, follow the link in my signature below.
Well OP after reading your post i was going to reply with a post very similar to this one. Give us more info and Phaedrus can steer you in the right direction. Also stickies in the PSU section will tell you everything you need to know.
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