What size power supply do I need?

[Ilikepiedoyou]

I am currently building a machine, and I will needto purchase a power supply, I have read many times on the board to make sure you psu is rated high enough. Well how do I know how much is enough?

 

[Mr Fox]

Please List Your Components and what you will use it for.... and possible future demands

 

[Blazer]

Originally posted by: Ilikepiedoyou
I am currently building a machine, and I will needto purchase a power supply, I have read many times on the board to make sure you psu is rated high enough. Well how do I know how much is enough?

http://search.msn.com/results.aspx?q=psu+calculator&FORM=MSNH

 

[pcy]

Hi,

Bear in mind that those calulatos give you an actual wattage required including a safety margin.


If you look at a cheap brnad of PSU you should double that figure because they simply do no do what they say on the tin.


Buit reputable brands can actually deilver the quoted wattage under opertaional conditions, so you don't have to multiply by 2.


The only brand I, personally, trust is Seasonic.



Peter

 

[Blazer]

Originally posted by: pcy
Hi,

Bear in mind that those calulatos give you an actual wattage required including a safety margin.


If you look at a cheap brnad of PSU you should double that figure because they simply do no do what they say on the tin.


Buit reputable brands can actually deilver the quoted wattage under opertaional conditions, so you don't have to multiply by 2.

The only brand I, personally, trust is Seasonic.

Peter

even a name brand should have the calculated figure doubled, imo.

 

[pcy]

Hi,

Even the ones that actually do deliver the stated power, and have been independantly verified to do do?

Why, pray?



Peter

 

[Butterbean]

When you figure out your needs you can also look at power efficiency ratings done indepenently. I use a Seasonic because its used for low noise systems and it's rated over 80% efficiency. I think I had to pay maybe 20 dollars more than for an Antec.. You can check 80+ ratings here:

http://www.80plus.org/manu/psu/manu_psu.htm

 

[JEDIYoda]

Originally posted by: pcy
Hi,

Even the ones that actually do deliver the stated power, and have been independantly verified to do do?

Why, pray?



Peter

There are several prands NOT just Seasonic that are good!! And while we are on the subject of independant verification..that means little to nothing!!

Now of by Independant verification you mean somebody like JonnyGURU....well thats another story altogether. His are honest and pull no punches!!

There are many great PSU`s on the market... Zippy...Enhance....PC Power & Cooling...Enermax and even the newer Antec PSU`s are good....also Thermaltake is turing out some real fine PSU`s...albeit slight issues with noise.....XCLIO....Silverstone...OCZ......etc......Seasonic...

The main thing to understand is you get what you pay for.....
Then again you some people believe you can pay too much for a Power Supply......
My own take on that is....mist PSU`s in the $60 and up range will suffice!!

Finally--there are many good PSU`s that are not rated by 80Plus.....
To be rated by 80Plus you pay a fee to have them rate your PSU.
There ratings are honest and accurate!!
But that does not mean that just because you don`t see your particular brand listed that your brand is shizza or inferior....
Good Luck@!@
Good Luck!!

 

[pcy]

Hi,

It really would help if you answered the question.

You stated that all brands needed to have the required system power figure multiplied by 2 when buying a PSU.

I asked why you applied this to all brands.


Arguing that Seaonic is not the only reputable brand (clearly ther are others, I never said otherwise) is irrelevant.

Implying that JonnyGURU (who is he? BTW) is the only honest reviewer is not only offensive, but also destroys your original point: if he says a particuilr PSU actually delivers what it says, would you still multiply the requirement by 2. If so, do you multiply the requirement by 4 if buying a brand that Jonny has not checked out?



Peter

 

[Gautama2]

lol, Just list your components and we will tell you what you need.