The Right PSU, Building a Computer Options

[bigalbertros]

Howdy Forumers,

Trying to knock together a new computer - its been a while since i have built one from scratch. And am it a loss as to choosing the right PSU ...

I have a coolermaster 850W already, and im thinking of just using that again as it seems to run this computer quiet well ... actually i think its a bit too powerfull for the system i have, hence the relavance too my question, i dont want to over supply and over spend, or under supply ... obviously ...

Any help you guys/gals can offer would be appriciated .....

Al

[orcone]

What are you trying to power?

[Dasa]

too much power wont do any harm it will just use maybe 5% more power depending on the quality of the psu which we need its model to know
~500w is fine for a high end single gpu system and ~650-850w for a dual gpu cf\sli system

[bigalbertros]

G'day Guys,

Thanks for your reply, first i need to correct myself, i have a Cooler Master 750w (80plus) Product # RS-750-ACAA-E3 ...

What i was thinking of putting together;

Gigabyte GA-X78-UD3
i7 3820 -2011 socket
16gig G.Skill 2133 (4x 4gig)
Pioneer BDR-207BK
2x Gigabyte 2gig 6950 - crossfire
Patriot SATA3 Pyro 120gig SSD
Seagate SV35 1T HDD

The PSU i currently have now has enough power cords to cover all of those, just dont know how to know if its strong enough to do so ... oh and its already 12months old ...

Cheers.
AL

This post has been edited by bigalbertros: Mar 7 2012, 12:57 PM

[Morgoth]

That should do fine

[tantryl]

Tell us the exact model of the PSU to be certain but yeah, unless there's a budget eXtreme Power 850W PSU I'm not aware of it should be fine.

[Dasa]

looks like this is the psu
http://www.jonnyguru.com/modules.php?name=...ry&reid=188
Performance 6
Functionality 9
Value 6
Aesthetics 9

Summary
Coolermaster has a decent 600 watt unit here. The unit does pretty well for stability and efficiency, doesn't get very loud, and... what? It's a 750 watt unit?
Facepalm.

The Good:
appearance
enough cabling to handle anything a 750W unit can power
somewhat shallow depth

The Bad:
cannot handle heat at 750 watts
ripple issues on the 3.3V rail
questionable capacitor quality

The Mediocre:
voltage regulation


if you dont overclock it should be ok or if you had a cool environment\2500k rather than 3820 but i wouldnt trust it
imo ideal psu for that build with some fairly heavy overclocking would be a corsair ax 750w

This post has been edited by Dasa: Mar 7 2012, 02:45 PM

[tantryl]

That's a 750W, he said 850W...

*EDIT* Aaaaand I missed that he later said it was a RS-750-ACAA-E3.

Yeah, you'd want something better than that IMO.

This post has been edited by tantryl: Mar 7 2012, 03:01 PM

[bigalbertros]

Hi, and thanks again for your replies.

No im not interested in over-clocking, im just gunna stick it all in and run it standard.

However, i have learned that the stock heat sink for the cpu might be garbage, and will have to look into something different for that.

Sorry if i have mis-led you all, i actually have a Cooler Master 750w (80plus) PSU, the PSU Dasa mentioned is the exact one currently installed in this comp.

If any of you have other suggestions for an alternative, im all ears, im interested in your own experiences :)



This post has been edited by bigalbertros: Mar 7 2012, 09:10 PM