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Help choosing PSU for new setup

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November 8, 2011 6:10:38 AM

I'm in the process of putting together a new build and I need some suggestions for a PSU. Modular cables would be nice, but isn't necessary. Here's what I'm currently assembling or have in mind so far:

Case: CM690 II Advanced

Mobo: MSI P67A-GD55

CPU: i5-2500k

GPU: MSI N560GTX-TI Twin Frozr II/OC (I plan on eventually running two in SLI)

RAM: G.SKILL Ripjaws X Series 8GB (2 x 4GB) 240-Pin DDR3 1600

CPU Fan: Cooler Master Hyper 212 +

Optical: ASUS DRW-24B1ST

HDD: WD 1TB Caviar Black 7200 RPM


Haven't decided on how many more fans I'll get for the case, depends on temps. I should also mention that I may add an SSD somewhere down the line as well. Any help would greatly be appreciated!

More about : choosing psu setup

a b ) Power supply
November 8, 2011 6:33:15 AM

According to the Newegg Power calculator you need approx 724W. We'd push that to anything between 850W to 1000W.
http://www.newegg.com/Product/ProductList.aspx?Submit=E...
Here is a list of good PSUs from Newegg, but the attractions are the ones with multiple 12V rails, not the single rail modules.
Check and see which one fits the wallet. and let us know.

Never had a Rosewill PSU but these days they seem to be coming out with pretty good materials, although it's not modular, but I have a feeling they might have a modular model too.
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a b ) Power supply
November 8, 2011 8:45:04 AM

What is your budget?
For those setup, I wouldn't go under 850W PSU.
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a b ) Power supply
November 8, 2011 3:42:27 PM

I would dissent from Alyoshka, and say that if you are going to sli in the future you should seek a single rail 12 V. The single rail models are much better for multiple GPU rigs with less issues on how to manage loads on individual rails. If you want a great 80 + silver PSU try this one: http://www.newegg.com/Product/Product.aspx?Item=N82E168...
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a c 274 ) Power supply
November 8, 2011 4:33:50 PM

A 750W psu will handle your specs no problem.
Proof= oc'd i7 965/x58 platform..
http://www.guru3d.com/article/geforce-gtx-560-ti-sli-re...
SB requires less power overall.
Antec Truepower New 750W Modular Bronze
http://us.ncix.com/products/?sku=36264&vpn=TP%2D750&man...
Measured maximum power: 919.4 W at 45.8º C
http://www.hardwaresecrets.com/article/Antec-TruePower-...
XFX 750W PRO750W XXX Edition Single Silver
http://us.ncix.com/products/?sku=62224&vpn=P1750BNLG9&m...
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a b ) Power supply
November 8, 2011 5:18:03 PM

If you want to objectively, accurately and scientifically determine what PSU power is required for your Vid card and PC in both watts and 12v rail amps., the forum Utility link below will show you how easy it is to calculate this information and objectively determine which PSUs are quality built, reliable PSUs that can meet your needs. Be advised that the available 12v rail amps. is just as important as the total PSU wattage. You need both to be correct.

http://www.tomshardware.com/forum/314712-28-please-read...
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November 8, 2011 7:58:33 PM

Much obliged for the help. After reading everyone's posts, would this perhaps work?:

http://www.newegg.com/Product/Product.aspx?Item=N82E168...

My budget is around $100-$130. With this PSU, I can get it at Amazon for about $100+free shipping to save money, which would really help. Also, based on davcon's info, it should provide more than enough power for what I need.
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a b ) Power supply
November 8, 2011 8:05:23 PM

yes you can... :) 
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November 9, 2011 2:17:27 AM

Off topic, but I also want to bring this up instead of posting a new thread.

I've seen a few people mention that I should go with an EVGA 560-TI instead of the MSI Twin Frozr II or Hawk for SLI because the top one will get insanely more hot due to the bottom one blowing hot air into it. However, I've seen plenty of people mention they haven't had any problems with either while running in SLI, based on feedback.

Anyone one have thoughts on this?
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a b ) Power supply
November 9, 2011 2:25:40 AM

^ Nope , the top one doesn't get insanely hot because the bottom one is pushing hot air into it. Air doesn't pass thru the cards. it passes over them on the underside, which usually vents out thru the back of the case.
But in an SLI/CF setup, it is true that one card run a little hotter than the other and that card is the one on top. So for either an SLI/CF setup, it is mostly a better idea to have a very well ventilated , good airflow case.
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a c 274 ) Power supply
November 9, 2011 12:14:51 PM

Vickers said:
Much obliged for the help. After reading everyone's posts, would this perhaps work?:

http://www.newegg.com/Product/Product.aspx?Item=N82E168...

My budget is around $100-$130. With this PSU, I can get it at Amazon for about $100+free shipping to save money, which would really help. Also, based on davcon's info, it should provide more than enough power for what I need.

Yep that would work..
Another good deal.
XFX 850W Core Edition Single Rail
http://us.ncix.com/products/?sku=63239&vpn=P1850SNLB9&m...
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November 19, 2011 8:50:34 AM

Best answer selected by Vickers.
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