Will 450W be enough for this build ?

[sizk]

I'm hesitating between a Corsair 450 & 550 W. No O/C. What do you reckon ?

Case : MAX IN POWER BigMax Black
Mobo : ASUS M4A79XTD EVO
CPU : Phenom II X4 965 BE
GPU : Sapphire Radeon HD 5670 1 Go
RAM : 2 x 2 Go G Skill DDR3 PC3 12800
HDD : Western Digital Caviar Blue 500 Gb 7200 rpm
Sound card : E-mu 1212m PCI-e
+ 1 USB powered MIDI Keyboard

 

[jarlmaster47]

550w for future upgrades. but if you wanted to get the 450w then that would be more than enough to power that rig

 

[mihir]

If you are planning to go crossfire in the future then 550s otherwise 450W

 

[sizk]

There will be probably be a few years passing (I get a new comp every 4 or 5 years) before I upgrade anything, go Crossfire (not much of a gamer) or get into O/C so do you think it's better to buy a new PSU by the time or go with 550 W now ? I've no idea how long these things can last...

 

[danthrax]

There will be probably be a few years passing (I get a new comp every 4 or 5 years) before I upgrade anything, go Crossfire (not much of a gamer) or get into O/C so do you think it's better to buy a new PSU by the time or go with 550 W now ? I've no idea how long these things can last...

I'd go with the 550w now, they're not a whole lot more money than a 450w and if it is a quality brand it should last you through a couple builds.

Just make sure you get one that is a good brand name!

 

[bomberboysk]

450W is plenty....you could nearly run a 5870 on a 450W corsair, let alone that system.

However,there are better options at that price:
http://www.newegg.com/Product/Product.aspx?Item=N82E16817171036 <--- modular, single rail.

http://www.newegg.com/Product/Product.aspx?Item=N82E16817371030 <--- 20% off with the coupon code listen on it page, amazing deal on an excellent power supply, comes out to ~$52...for quite honestly one of the best ~500W units out there, nice large 40A single rail.

 

[Shane]

Whats the budget?

Have you looked into what is available from OCZ,They do fantastic 600-700W power supplies and good prices.

 

[DCIScouts]

I'd go with the 550W since it's only a little bit more, and your processor is quite a power hog. It's best to go a little high on the PSU and not use all the power it provides, than to shortchange it and slowly kill all your much more expensive nicer components.

 

[sizk]

Alright 550W it'll be

Thanks everyone!

 

[sizk]

Tho according to eXtreme Power Supply Calculator Lite v2.5 I barely need a 350 W PSU. I've no idea how reliable the calculator is but isn't 450 W safe enough ?

 

[DCIScouts]

You've got to remember that for most PSU an 80% load is the most efficient, and you don't want to have the computer over that for more than short periods of time. The processor you chose alone can take up to a maximum of 125W. Also, just because the computer turns on, doesn't mean that you aren't underpowering your devices and slowly, severely damaging them. And, you have to take in to account that over time the PSU will become less and less efficient. Ultimately, it's best to go at least one level higher than what you "need" for several different reasons. And, it'll only cost you about $10 or $20 more, or at least it should.

 

[Okedokey]

To answer your question. The 450W Corsair PSU has sufficient 12V rail amperage (amperage is more important than wattage - 33A) for your current build, however for the $14 more or whatever, the 550W is a much better buy. Not only a better PSU, it will provide significant upgrade room with 44A on the 12V rail. http://www.newegg.com/Product/Product.aspx?Item=N82E16817139004