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Which psu would work for this setup ?

Last response: in Components
August 15, 2012 8:30:39 AM

Any advice appreciated. I am trying to decide which PSU to get. I am not bothered about getting a that is more powerfull than it needs to be to allow for future upgrades- I have a limited budget and just want one that has enough to power to power my system - I am not bothered about the getting the "best" money can buy. - Just something that will get the job done.
I originally consider generic because I have been using a 500w generic psu that came with my case for over a year but I have been told it better to get a branded psu :

My setup is as follows :

Processor: AMD Phenom II 1055t - 3.3 GHz (Stock Voltage)
HD : Samsung F4 1tb 7200 rpm (I would like to add another hard drive as a primary O/S drive possibly a SSD)
Motherboard : ASUS M4A79XTD EVO motherboard
Graphics : ATI RADEON HD 5770 Graphics card
Case/chassis : Antec 300
Optical Drive: Samsung DVD Burner

I have found to PSU's that are in my price range

OCZ Technology 500W CoreXStream Series Power Supply
Antec 450w VP450P Power Supply

More about : psu work setup

August 15, 2012 9:59:06 AM

I forgot to mention my ram is: 8Gb (2x4gb) Kingston HyperX 1600Mhz
August 15, 2012 10:30:34 AM

I personally recommend a Corsair CX500 because it's certified and the price isn't bad ($50 after $10 rebate):

I've been running one for several months with my overclocked HD6850 and Intel I3 2120 and so far it's been great.
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August 15, 2012 10:39:27 AM

How much power do you think I need ?

I look at the Corsair PSU but found out I could get a Antec 550w VP550P Power Supply for about the same price as the corsair, but I don't know if it is any good?

Also I am in the UK so PSU's seem to cost a lot more than the USA, because the amount of taxes which is annoying.
August 15, 2012 10:53:15 AM

Yeah, I just realized this is a UK forum... lol!

I always run a 500w minimum to be safe (I always build mid-end systems that don't draw much power and only have the required hardware). There's more to a PSU than just the wattage, though, you have to look at the voltage on the 12v rails. If the voltages are too low it'll be unstable and if it's too high it'll wear your hardware prematurely. I'm not an expert on this stuff but I'd say you'd be safe with at least a 500w PSU as long as you aren't running a bunch of extra stuff (dual video cards, extra disks, drives, tons of fans and lights, etc.)

And remember that a lot of PSU's out there aren't actually manufactured by the brand name on the unit; however, they usually have a standard of quality to meet in order to pass and be sold as such.

And I'd suggest getting a modular PSU if you can afford it. It makes it so you plug in only the wires you need for your particular system rather than having to tuck away all the unused ones. The other wires can always be added later if you add more hardware to your system.

Anyways, I think you'll be safe with a 500w minimum as I believe my system requires more power and my 500w holds up great. If a 550w makes you feel safer, then go for it, but in my opinion it's overkill.
August 15, 2012 11:12:43 AM

Oh, and here are my hardware specs if you'd like a comparison with yours...

Windows 7 Home Premium

Corsair CX 500w PSU

Intel I3 2120 3.3ghz (stock heatsink)

ASRock H61M motherboard

8GB Mushkin RAM

MSI R6850 (factory overclocked + aftermarket heatsink)

500gb WD hard drive

LG DVD drive

... and that's about it - bare minimum gaming system and the 500w Corsair works great.

edit - You made a wise decision by going with a brand name PSU. Generics will only force you to spend more $ in the long run. Thinking long-term with your money will keep you and your wallet happy. :) 
August 15, 2012 11:14:01 AM

Thank you for the useful answer, I decided to buy the Antec 550w
a c 87 ) Power supply
August 15, 2012 11:20:18 AM

AMD recommends a 450W PSU with one PCIe connector for a system with a 5770. This number has to account for people using very power hungry systems (which yours is not) as well as poor quality units.
So you could actually get a lower wattage unit aslong as it is high quality.

Out of the two you listed the Antec VP550P is the better unit, you could actually crossfire 5770s on it. Seeing as you said that you are not interested in this I think you should get the 450W version:
Antec VP450P (£30 @ Scan)

Or this:
XFX ProSeries 450W Core Edition P1-450S-XXB9 (£35 @ Dabs)
August 15, 2012 11:22:26 AM

Looks like you did good fans! Enjoy the new unit. ;) 
a c 158 ) Power supply
August 15, 2012 11:51:29 AM

+1 to Silvune; either or those are good PSUs and sufficient for the above build.