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The Right PSU


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#1 bigalbertros

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Posted 06 March 2012 - 01:55 PM

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

#2 orcone

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Posted 06 March 2012 - 02:14 PM

What are you trying to power?

#3 Dasa

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Posted 06 March 2012 - 04:23 PM

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
2600k@4.8GHz 1.38v - Z77-GENE - 2x4g 1600 8-9-8 - 7970 1150\7000MHz 1.15v - OCZ Synapse 120g Seagate 2tb - Seasonic XP1000 - Dell U2711 - Pioneer Todoroki 5.1 Storm G5 - MCW60 - EK-VGA HF - MCP355 XSPC Restop - PA120.4 - Scythe GT 4x120 1440/1850rpm http://i3.photobucke...sa09/z77rog.jpg

#4 bigalbertros

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Posted 07 March 2012 - 12:56 PM

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

Edited by bigalbertros, 07 March 2012 - 12:57 PM.


#5 Morgoth

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Posted 07 March 2012 - 01:00 PM

That should do fine
2011 Atomic 3DMark & Game Benchmark Rankings !! http://forums.atomic...showtopic=41178 Current PC (no lie) Athlon XP-M 2400+@2640MHz (3d) / Abit NF7-S2.0 Vmodded / 1Gig OCZ Gold EL GX BH-5 / ATI Radeon 9800XT@500MHz

#6 tantryl

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Posted 07 March 2012 - 02:05 PM

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.
"Unless I call you a stupid goddamn liar to your face, I'm being light hearted." - tantryl, to all you evil fucks "Two things. Number one; I get hard when a woman cries. Number two; your daughter will never walk again." - Dr Glenn Richie

#7 Dasa

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Posted 07 March 2012 - 02:41 PM

looks like this is the psu
http://www.jonnyguru...=...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

Edited by Dasa, 07 March 2012 - 02:45 PM.

2600k@4.8GHz 1.38v - Z77-GENE - 2x4g 1600 8-9-8 - 7970 1150\7000MHz 1.15v - OCZ Synapse 120g Seagate 2tb - Seasonic XP1000 - Dell U2711 - Pioneer Todoroki 5.1 Storm G5 - MCW60 - EK-VGA HF - MCP355 XSPC Restop - PA120.4 - Scythe GT 4x120 1440/1850rpm http://i3.photobucke...sa09/z77rog.jpg

#8 tantryl

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Posted 07 March 2012 - 03:00 PM

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.

Edited by tantryl, 07 March 2012 - 03:01 PM.

"Unless I call you a stupid goddamn liar to your face, I'm being light hearted." - tantryl, to all you evil fucks "Two things. Number one; I get hard when a woman cries. Number two; your daughter will never walk again." - Dr Glenn Richie

#9 bigalbertros

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Posted 07 March 2012 - 09:06 PM

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 :)

Edited by bigalbertros, 07 March 2012 - 09:10 PM.





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